SRECH | Key | Original abbreviation | Country | Company type | City | Full name | Description | Websites | Attributes |
| AAAJ | | DK: Denmark | N: Narrow gauge railway | | Aabenraa Amts Jernbaner | 1899 - 1926; 1000 mm | | |
| AAATV | | F: France | VC: Railway Friends Association | | Amicale des Anciens et Amis de la Traction Vapeur | | | |
| AACH | ASEAG | D: Germany | C: City traffic | Aachen | Aachener Straßenbahn und Energieversorgungs AG | | | |
| AAE | | D: Germany | R: Railway | | Ahaus Alstätter Eisenbahn | | | |
| AAEC | | CH: Switzerland | P: Pool (Leasing / wagon pool) | CH-6340 Baar | AAE Cargo AG | | | |
| AAFB | | E: Spain | V: Museum | | Asociación de Amigos del Ferrocarril de Bilbao | | | |
| AAFM | | E: Spain | O: Organisation | | Asociación de Amigos del Ferrocarril de Madrid | | | |
| AAGL | | CH: Switzerland | B: Bus | | Autobus AG Liestal | | https://de.wikipedia.org/wiki/Autobus_AG_Liestal | |
| AAGS | | CH: Switzerland | B: Bus | | Auto AG Schwyz | | | |
| AAGU | | CH: Switzerland | B: Bus | | Auto AG Uri | | https://de.wikipedia.org/wiki/Auto_AG_Uri | |
| AAL | | USA: United States of America | A: Aviation | | American Airlines | | | |
| AAN | | E: Spain | A: Aviation | | Oasis Airlines | | https://en.wikipedia.org/wiki/Oasis_Airlines | |
| AAQ | | CDN: Canada | A: Aviation | | Air Alliance | | https://en.wikipedia.org/wiki/Air_Alliance | |
| AAQT | AAQ | T: Thailand | A: Aviation | | Asia Atlantic Airlines | | | |
| AAR | | ROK: Korea | A: Aviation | | Asiana Airlines | | | |
| AARB | AA | USA: United States of America | R: Railway | | Ann Arbor | | | |
| AARG | | RA: Argentina | A: Aviation | | Aerolíneas Argentinas | | https://en.wikipedia.org/wiki/Aerol%C3%ADneas_Argentinas | |
| AARV | AAR | CH: Switzerland | C: City traffic | | Aargauer Agglomerations & Regionalverkehr | | | |
| AAS | | DK: Denmark | C: City traffic | Arhus | | | | |
| AASM | ASm | CH: Switzerland | RT: Regional transport company | | Aare Seeland mobil | | https://de.wikipedia.org/wiki/Aare_Seeland_mobil | |
| AB | | CH: Switzerland | R: Railway | | Appenzeller Bahnen | | | |
| ABA | | DK: Denmark | R: Railway | | Amtsbanerne på Als | 1898 - 1933 | | |
| ABAV | | COM: Comoros | A: Aviation | | AB Aviation | | http://www.flyabaviation.com/ | |
| ABDK | AB | DK: Denmark | R: Railway | | Amagerbanen | 1907 - 1974 | | |
| ABEG | | D: Germany | RO: Railway operator | | Anhaltinisch-Brandenburgische Eisenbahngesellschaft mbH | | abeg-bahn.de | |
| ABEL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Abellio London | | | |
| ABES | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Abellio Surrey | | http://en.wikipedia.org/wiki/Abellio_(London_&_Surrey) | |
| ABG | | D: Germany | R: Railway | | Anhaltische Bahn Gesellschaft | | | |
| ABH | | A: Austria | Y: Military | | Bundesheer | | | |
| ABL | | USA: United States of America | R: Railway | | Alameda Belt Line | | | |
| ABLA | ABL | CDN: Canada | A: Aviation | | Air BC | | https://en.wikipedia.org/wiki/Air_BC | |
| ABLK | ABL | ROK: Korea | A: Aviation | | Air Busan | | | |
| ABOAG | | D: Germany | C: City traffic | | Allgemeine Berliner Omnibus AG | 1868 - 1928 | | |
| ABOUTME | | CZ: Czech Republic | B: Bus | | About Me spol. s.r.o. | | | |
| ABR | | D: Germany | R: Railway | | Abellio GmbH | | www.abellio.de | |
| ABRA | | SK: Slovakia | B: Bus | | Arriva Bratislava | | | |
| ABS | | D: Germany | B: Bus | | Autobus Sachsen GmbH | | | |
| ABT | | D: Germany | B: Bus | Schwäbisch Gmünd | Severin Abt GmbH & Co. KG | | | |
| ABUK | | J: Japan | R: Railway | | Abukuma Express Ltd. | | | |
| ABUS | | USA: United States of America | B: Bus | | American Bus Company, NJ | | | |
| ABUSG | | PL: Poland | B: Bus | Gdynia | Przedsiębiorstwo Komunikacyjne A-BUS | | | |
| ABUSS | | SK: Slovakia | B: Bus | | ABUSS Autobusova Doprava | | | |
| ABW | | RUS: Russia | A: Aviation | | AirBridgeCargo Airlines | | | |
| ABWT | | USA: United States of America | C: City traffic | | Alexandria, Barcroft and Washington Transit Company | | | |
| ABX | | USA: United States of America | A: Aviation | | ABX air | Sold to DHL | | |
| AC | | USA: United States of America | R: Railway | | Algoma Central | | | |
| ACA | | CDN: Canada | A: Aviation | | Air Canada | | | |
| ACAD | ACADEMY | USA: United States of America | B: Bus | | Academy Bus Lines | | | |
| ACB | | A: Austria | N: Narrow gauge railway | | Achenseebahn | | | |
| ACBC | | USA: United States of America | C: City traffic | | A&C Bus Corp | | | |
| ACC | | E: Spain | M: Industry (railway maintenance) | | Acciona | | | |
| ACCSA | | E: Spain | C: City traffic | Castellón | Autotransportes colectivos castellonenses | | | |
| ACCT | | US-CA: USA, California | B: Bus | | AC Transit: Alameda-Contra Costa Transit District | | | |
| ACDN | | CDN: Canada | R: Railway | | Acadian Railway Company | | | |
| ACE | | USA: United States of America | C: City traffic | | Altamont Commuter Express | | | |
| ACEL | | E: Spain | M: Industry (railway maintenance) | | Acelaria | | | |
| ACEX | | USA: United States of America | R: Railway | | Altamont Commuter Express Authority | | | |
| ACFX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General Electric Rail Services Corp. | | | |
| ACI | | F: France | A: Aviation | | Air Caledonie International | Based in New-Caledonia | | |
| ACIT | | I: Italy | R: Railway | | Azienda Consorziale Interprovinciale | | | |
| ACITY | | USA: United States of America | B: Bus | | Atlantic City Transportation | | | |
| ACL | | USA: United States of America | R: Railway | | Atlantic Coast Line | | | |
| ACLS | ACL | GB: United Kingdom of Great Britain and Northern Ireland | SH: Shipping company | | Atlantic Container Line | | | |
| ACOE | | USA: United States of America | F: Industry (manufacturer) | | American Coal Enterprises | | | |
| ACOT | | I: Italy | R: Railway | | ACOTRAL | Roma - Ostia Lido | | |
| ACT | | I: Italy | ??? | | Azienda Consorziale Transporti Reggio Emilia | | | |
| ACTC | | I: Italy | C: City traffic | | ACT Cagliari | | | |
| ACTD | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Aberdeen Corporation Transport Department | | | |
| ACTION | | AUS: Australia | C: City traffic | Canberra | Action | | | |
| ACTS | | NL: Netherlands | R: Railway | | ACTS Nederland B.V. | | www.acts-nl.com/ | |
| ACTV | | I: Italy | C: City traffic | Venedig | Azienda del Consorzio Trasporti Veneziano | | | |
| ACWR | | CDN: Canada | R: Railway | | Aberdeen, Carolina & Western | | | |
| ACY | | USA: United States of America | R: Railway | | Akron, Canton & Youngstown Railroad | | | |
| AD | | USA: United States of America | R: Railway | | Atlantic and Danville Railway | | | |
| ADAC | | D: Germany | O: Organisation | | | | | |
| ADAM | | D: Germany | P: Pool (Leasing / wagon pool) | | Uwe Adam Eisenbahnverkehrsunternehmen GmbH | | www.lok-vermietung.de/ | |
| ADB | | UA: Ukraine | A: Aviation | | Antonov Airlines | | | |
| ADE | | D: Germany | R: Railway | | A.D.E. Eisenbahnverkehrsunternehmen | | | |
| ADEL | | AUS: Australia | C: City traffic | | Adelaide Tram | | | |
| ADFER | | I: Italy | R: Railway | | Adriafer srl | Servizio ferroviari porto di Trieste | | |
| ADK | | J: Japan | A: Aviation | | Air Hokkaido | | | |
| ADL | | GB: United Kingdom of Great Britain and Northern Ireland | T: Type of car, lorry | | Alexander Dennis | | https://en.wikipedia.org/wiki/Alexander_Dennis | |
| ADMIRAL | | USA: United States of America | B: Bus | | Admiral Coach | ADM is an American multinational food processing and commodities trading corporation | https://en.wikipedia.org/wiki/ADM_(company) | |
| ADMX | ADM, ADMX | USA: United States of America | R: Railway | | Archer Daniels Midland Co. | | | |
| ADN | | USA: United States of America | R: Railway | | Ashley, Drew & Northern Ry. Co. | | | |
| ADO | | J: Japan | A: Aviation | | Hokkaido International Airlines / Air Do | | | |
| ADR | | SLO: Slovenia | A: Aviation | | Adria Airways | | https://en.wikipedia.org/wiki/Adria_Airways | |
| ADRIA | | A: Austria | R: Railway | | Adria Transport | | | |
| ADT | | F: France | Y: Military | | Armee de Terre | | | |
| ADVF | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Advenza Freight | | | |
| AEA | | E: Spain | A: Aviation | | Air Europa | | https://en.wikipedia.org/wiki/Air_Europa | |
| AEC | | GB: United Kingdom of Great Britain and Northern Ireland | T: Type of car, lorry | | Associated Equipment Company | | https://en.wikipedia.org/wiki/Associated_Equipment_Company | |
| AECR | | USA: United States of America | R: Railway | | Atlantic and East Carolina Ry. Co. | | | |
| AECX | | USA: United States of America | I: Industry (user) | | Associated Electric Cooperative, Inc. | | | |
| AEE | | GR: Greece | A: Aviation | | Aegean Airlines | | | |
| AEK | | BOL: Bolivia | A: Aviation | | Aero Comercial Oriente Norte Ltda. | | https://en.wikipedia.org/wiki/Aerocon | |
| AEM | | I: Italy | ??? | | | | | |
| AERC | | USA: United States of America | R: Railway | | Albany and Eastern Railroad | | | |
| AERO | | CS: Czechslowakia | F: Industry (manufacturer) | | Aero Vodochody | | www.aero.cz | |
| AES | | CO: Colombia | A: Aviation | | Aerolineas Centrales de Colombia S.A. (ACES) | | | |
| AESX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | A.E. Staley Manufacturing Co. | | | |
| AEW | | UA: Ukraine | A: Aviation | | AeroSvit Airlines | | https://en.wikipedia.org/wiki/Aerosvit_Airlines | |
| AEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | The Andersons | | | |
| AEXPA | | CO: Colombia | A: Aviation | | Aero Expreso del Pacífico | Aexpa S.A. is a charter airline based at Matecaña International Airport in Pereira, Colombia | https://en.wikipedia.org/wiki/Aexpa | |
| AEZ | | I: Italy | A: Aviation | | AeroItalia | | https://en.wikipedia.org/wiki/AeroItalia | |
| AF | | F: France | ??? | | Air France | | | |
| AFA | | CH: Switzerland | B: Bus | | Automobilverkehr Frutigen - Adelboden AG | | | |
| AFAG | | D: Germany | B: Bus | Flensburg | | | | |
| AFCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Atel Capital Equipment Fund | | | |
| AFDA | | AFG: Afghanistan | Y: Military | | Afghan Army (Democratic Republic of Afghanistan) | | | |
| AFL | | SU: Sovietunion | A: Aviation | | Aeroflot | | | |
| AG | | USA: United States of America | R: Railway | | Abbeville-Grimes Ry. Co., Inc. | | | |
| AGDY | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Autobusowej w Gdyni | | https://pl.wikipedia.org/wiki/Przedsi%C4%99biorstwo_Komunikacji_Autobusowej_w_Gdyni | |
| AGHE | | D: Germany | V: Museum | | Arbeitsgemeinschaft historische Eisenbahnfahrzeuge e.V. | | www.aghe.de | |
| AGIL | | D: Germany | R: Railway | | agilis | | | |
| AGJ | | DK: Denmark | R: Railway | | Almindingen - Gudhjem Jernbane | 1916 - 1952 | | |
| AGP | | ??? | ??? | | | | | |
| AGPX | | USA: United States of America | I: Industry (user) | | AG Processing, Inc. | | | |
| AGR | | H: Hungary | B: Bus | | Agria Volán | | | |
| AGRL | AGR | USA: United States of America | R: Railway | | Alabama & Gulf Coast Railway LLC. | | | |
| AGRP | | F: France | ??? | | Agrivap | | | |
| AGRW | AGR | USA: United States of America | R: Railway | | Alabama & Gulf Coast Ry. LLC | | | |
| AGVX | | USA: United States of America | I: Industry (user) | | Ag Valley Co-op | | | |
| AGWS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Guilford & West Surrey | | | |
| AHB | | DK: Denmark | R: Railway | | Aalborg - Hvalpsund Jernbane (Hvalpsundbanen) | 1910 - 1969 | | |
| AHG | | D: Germany | R: Railway | | AHG Handel & Logistik GmbH | | www.ahg-gruppe.de/ | |
| AHJ | | DK: Denmark | R: Railway | | Aalborg - Hadsund Jernbane (Hadsundbanen) | 1900 - 1969 | | |
| AHK | | HK: Hong Kong | A: Aviation | | Air Hong Kong | | | |
| AHTJ | | DK: Denmark | R: Railway | | Århus - Hammel - Thorsø Jernbane (Hammelbanen) | 1914 - 1956 | | |
| AHW | | USA: United States of America | R: Railway | | The Ahnapee & Western Ry. Co. | | | |
| AHWB | | CH: Switzerland | B: Bus | Horgen | AHW Busbetriebe AG | | https://en.wikipedia.org/wiki/Zimmerberg_bus_line | |
| AHX | | J: Japan | A: Aviation | | Amakusa Airlines | | | |
| AIB | | F: France | A: Aviation | | Airbus Industries | | | |
| AIC | | IND: India | A: Aviation | | Air India | | | |
| AIH | | ROK: Korea | A: Aviation | | Air Incheon | | https://en.wikipedia.org/wiki/Air_Incheon | |
| AIKAN | | J: Japan | R: Railway | | Aichi Loop Railway (Aikan) | | | |
| AIKR | | USA: United States of America | R: Railway | | Aiken Railway | | | |
| AINO | | J: Japan | R: Railway | | Ainokaze Toyama Railway | | https://en.wikipedia.org/wiki/Ainokaze_Toyama_Railway | |
| AIQ | | T: Thailand | A: Aviation | | Thai AirAsia | | https://en.wikipedia.org/wiki/Thai_AirAsia | |
| AIRAM | | USA: United States of America | A: Aviation | | Air America | | https://en.wikipedia.org/wiki/Air_America_(airline) | |
| AIRSP | | GB: United Kingdom of Great Britain and Northern Ireland | F: Industry (manufacturer) | | Airspeed | | https://en.wikipedia.org/wiki/Airspeed_Ltd. | |
| AIUK | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Aggregate Industries | | aggregate.com | |
| AIXB | | F: France | B: Bus | | Aix en bus | | https://fr.wikipedia.org/wiki/Aix_en_bus | |
| AIZ | | IL: Israel | A: Aviation | | Arkia Israeli AirlinesLtd | | https://en.wikipedia.org/wiki/Arkia | |
| AJ | | USA: United States of America | R: Railway | | Alma & Jonquieres Ry. Co. | | | |
| AJMX | | USA: United States of America | X: Phantasy | | AJMX Leasing | | | |
| AJOR | | JOR: Jordan | A: Aviation | | Air Jordan | Air Jordan was an airline based in Jordan. It was founded in 1950. In 1958, it acquired Arab Airways Jerusalem and changed its name to Air Jordan of the Holy Land. It ceased operating in 1961. | https://en.wikipedia.org/wiki/Air_Jordan_(airline) | |
| AK | | D: Germany | B: Bus | | Autokraft GmbH | | https://de.wikipedia.org/wiki/Autokraft | |
| AKAN | | J: Japan | B: Bus | | Akan Bus | | | |
| AKE | | D: Germany | RO: Railway operator | | AKE Eisenbahntouristik | | ake-eisengahntouristik.de | |
| AKIEM | | F: France | P: Pool (Leasing / wagon pool) | | Akeim | | | |
| AKIN | | J: Japan | R: Railway | | Akita Nairiku Jukan Railway | | http://en.wikipedia.org/wiki/Akita_Nairiku_Jukan_Railway_Akita_Nairiku_Line | |
| AKMD | | USA: United States of America | R: Railway | | Arkansas Midland Railroad | | | |
| AKN | | D: Germany | R: Railway | | Altona - Kaltenkirchen - Neumünster Eisenbahn | | | |
| AKOR | KOR | PRK: North Korea | A: Aviation | | Air Koryo | | | |
| AKPOL | | PL: Poland | B: Bus | Warszawa | Prywatne Przedsiębiorstwo Komunikacyjne 'Akpol' Warszawa | | | |
| AKSX | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Kent & Sussex | | | |
| AKTH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Kent Thameside | | | |
| AKX | | J: Japan | A: Aviation | | ANA Wings | | https://en.wikipedia.org/wiki/ANA_Wings | |
| AL | | F: France | R: Railway | | Chemins de fer d'Alsace-Lorraine | | | |
| ALAB | | USA: United States of America | R: Railway | | Alabama Railroad | | | |
| ALBA | | H: Hungary | B: Bus | | Alba Volán | | | |
| ALC | | USA: United States of America | R: Railway | | Autoliner Corp. | | | |
| ALCO | | USA: United States of America | F: Industry (manufacturer) | | | | | |
| ALCOS | | CH: Switzerland | I: Industry (user) | | Alcosuisse | | | |
| ALERT | | USA: United States of America | B: Bus | | Alert Coach | | | |
| ALEX | | D: Germany | R: Railway | | | Allgäu-Express | | |
| ALEY | AL | CH: Switzerland | R: Railway | | Aigle - Leysin | | | |
| ALFA | | I: Italy | T: Type of car, lorry | | Alfa Romeo | | | |
| ALIF | | I: Italy | R: Railway | | Ferrovia Alifana | | https://en.wikipedia.org/wiki/Ferrovia_Alifana | |
| ALIT | AZA | I: Italy | A: Aviation | | Alitalia | | https://en.wikipedia.org/wiki/Alitalia | |
| ALK | | CL: Sri Lanka | A: Aviation | | SriLankan Airlines | | | |
| ALL | | RA: Argentina | R: Railway | | America Latina Logistica | | | |
| ALLN | | USA: United States of America | R: Railway | | Auburn and Allentown Railroad | | | |
| ALM | | USA: United States of America | R: Railway | | Arkansas, Louisiana and Mississippi Railroad | | | |
| ALMA | AAEV | H: Hungary | N: Narrow gauge railway | | Almamellék | | | |
| ALNX | | CDN: Canada | O: Organisation | | Alberta Government | | | |
| ALOE | | I: Italy | M: Industry (railway maintenance) | | Ing. De Aloe Costruzioni S.r.l., Brescia | | | |
| ALPE | | PL: Poland | B: Bus | Elbląg | Autobusowe Linie Prywatne, sp. z o.o. | | | |
| ALPICO | | J: Japan | B: Bus | | Alpico Kotsu Co., Ltd | Alpico Kotsu Co., Ltd. is a public transport company in Nagano Prefecture, Japan. It is the core company of Alpico Group and is wholly owned by Alpico Holdings Co., Ltd. The company was known as Matsumoto Electric Railway Co., Ltd. (Matsumoto Denki-tetsudo Kabushiki-gaisha) until its merger with two affiliate companies on April 1, 2011 | https://en.wikipedia.org/wiki/Alpico_K%C5%8Dts%C5%AB | |
| ALPX | | CDN: Canada | O: Organisation | | Alberta Government | | | |
| ALR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Ashover Light Railway | The ALR was a 60cm gauge line in Derbyshire, it ran from the Clay Cross Co. works at Clay Cross on the LMS main line to the works at Ashover, some 7 miles away. It was mainly a mineral carrier, with supplementary passenger service. Minerals included limestone, fluorspar, gritstone and later coal. It opened in 1924, being constructed and equipped using mainly surplus materials from WW1, and lasted until 1950 by which time it was worn out. | | |
| ALS | | USA: United States of America | R: Railway | | (AL&S) Alton & Southern R.R. | | http://www.shintetsu.co.jp/ | |
| ALSTOM | ALS | D: Germany | F: Industry (manufacturer) | | Alstom Lokomotiven Service GmbH | In 2002 Alstom took over the DBAG Stendal works. ALS leases/hires locomotives to operators, mainly rebuilt DBAG class 202. | www.alstom.de/ | |
| ALTM | | L: Luxembourg | B: Bus | | Autocars Altmann | | | |
| ALTMARK | | D: Germany | B: Bus | | Altmarktrans Stendal | | | |
| ALTON | | USA: United States of America | R: Railway | | Chicago and Alton Railroad | | | |
| ALY | | USA: United States of America | R: Railway | | Allegheny & Eastern R.R., Inc | | https://en.wikipedia.org/wiki/Alexander_Dennis | |
| ALZA | | PL: Poland | RO: Railway operator | | Alza Cargo | | | |
| AM | | USA: United States of America | R: Railway | | Arkansas and Missouri Railroad | | www.arkansasmissouri-rr.com | |
| AMADOR | | US-CA: USA, California | B: Bus | | Amador Stage Lines (CA) | | | |
| AMAGI | | J: Japan | R: Railway | | Amagi Railway (Amatetsu) | | http://en.wikipedia.org/wiki/Amagi_Railway_Amagi_Line | |
| AMAL | AMC | M: Malta | A: Aviation | | Air Malta | | https://en.wikipedia.org/wiki/Air_Malta | |
| AMAU | MAU | MUS: Mauritius | A: Aviation | | Air Mauritius | | | |
| AMBER | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Rayleigh | Anber Coaches | | | |
| AMC | | USA: United States of America | R: Railway | | Amador Central Railroad Company | | | |
| AMCA | AMC | ET: Egypt | A: Aviation | | Aircraft Maintenance Company (AMC Airlines) | | | |
| AMEBA | | CH: Switzerland | M: Industry (railway maintenance) | | Ameba AG. | | | |
| AMGX | | USA: United States of America | P: Pool (Leasing / wagon pool) | Montreal | AMG Resources Corp. | | | |
| AMPEX | | PL: Poland | C: City traffic | Bytom | Ampex | | | |
| AMR | | USA: United States of America | R: Railway | | The Arcata and Mad River R.R. Co. | | | |
| AMRTM | | GB: United Kingdom of Great Britain and Northern Ireland | V: Museum | | Aston Manor Road Transport Museum | | | |
| AMST | GVB | NL: Netherlands | C: City traffic | Amsterdam | Gemeente Vervoerbedrijf Amsterdam | | | |
| AMT | | F: France | V: Museum | | Association pour le Musée des Transports Urbains, Interurbains et Ruraux | | | |
| AMTG | AMT | I: Italy | C: City traffic | Genova | Azienda Mobilita` e Trasporti | | | |
| AMTK | | USA: United States of America | R: Railway | | Amtrak | | | |
| AMTKCA | | US-CA: USA, California | R: Railway | | Amtrak California | | | |
| AMTM | AMT | CDN: Canada | C: City traffic | Montreal | Agence Metropolitaine de Transport | | | |
| AMTRAN | | USA: United States of America | B: Bus | | Altoona Metro Transit | | | |
| AMU | | ??? | A: Aviation | | Air Macau | | | |
| AMX | | MEX: Mexico | A: Aviation | | Aeromexico | | | |
| AMZ | | B: Belgium | A: Aviation | | Air Meuse | | | |
| AMZK | AMZ | PL: Poland | T: Type of car, lorry | | AMZ Kutno S.A. | | | |
| AN | | AUS: Australia | R: Railway | | Australian National | | | |
| ANA | | J: Japan | A: Aviation | | All Nippon Airways Co. Ltd. | | | |
| ANAT | | TR: Turkey | A: Aviation | | Anatolian | | | |
| ANATR | | CH: Switzerland | O: Organisation | | Association Neuchâteloise des Amis du Tramway | | | |
| ANB | | D: Germany | R: Railway | | Alsternordbahn | | | |
| AND | | E: Spain | R: Railway | | Andaluces ? | | | |
| ANDERSEN | | USA: United States of America | I: Industry (user) | | Andersen Windows Corporation of Bayport | | | |
| ANE | | E: Spain | A: Aviation | | Air Nostrum | | https://en.wikipedia.org/wiki/Air_Nostrum | |
| ANG | | PNG: Papua-New Guinea | A: Aviation | | Air Niugini | | https://en.wikipedia.org/wiki/Air_Niugini | |
| ANGELT | | USA: United States of America | TB: Tourist agency | | Angel Tours, NJ | | | |
| ANGOU | | F: France | C: City traffic | Angouleme | | | | |
| ANK | | J: Japan | A: Aviation | | Air Nippon Co. Ltd. | | | |
| ANMP | | P: Portugal | YA: Military: Air force | | Aeronáutica Militar | | https://en.wikipedia.org/wiki/Portuguese_Air_Force | |
| ANNR | ANR | USA: United States of America | R: Railway | | Angelina and Neches River Railroad | | | |
| ANO | | AUS: Australia | A: Aviation | | Airnorth | | https://en.wikipedia.org/wiki/Airnorth | |
| ANP | | P: Portugal | Y: Military | | Portuguese Naval Aviation (Aviaçao Naval Portuguesa) | | https://en.wikipedia.org/wiki/Portuguese_Naval_Aviation | |
| ANPX | | USA: United States of America | I: Industry (user) | | Anchor Petroleum Co. | | | |
| ANQ | | CO: Colombia | A: Aviation | | Aerolínea de Antioquia | | | |
| ANR | | AUS: Australia | R: Railway | | Australian National Railways Comission | 1975 - 1998 | | |
| ANRI | ANR | USA: United States of America | R: Railway | | Angelina and Neches River Railroad | | | |
| ANRR | AN | USA: United States of America | R: Railway | | Apalachian Northern R.R. Co. | | | |
| ANS | | USA: United States of America | X: Phantasy | | Alec and Southern Railway | | | |
| ANSEHN | | DDR: German Democratic Republic | B: Bus | | | | | |
| ANSJ | | DK: Denmark | R: Railway | | Aars - Nibe - Svendstrup Jernbane | 1899 - 1910 | | |
| ANTELOPE | | HK: Hong Kong | B: Bus | | Antelope Omnibus | | | |
| ANTW | | B: Belgium | C: City traffic | Antwerpen | | | | |
| ANZ | | NZ: New Zealand | A: Aviation | | Air New Zealand | | | |
| AOB | | D: Germany | B: Bus | | Autobus Oberbayern GmbH | | https://de.wikipedia.org/wiki/AutobusOberbayern | |
| AOE | | USA: United States of America | TU: Touristic railway | | American Orient Express | | http://american-orient-express-train.com/index.htm | |
| AOIM | | J: Japan | R: Railway | | Aoimori Railway | | http://www.aoimorirailway.com/ | |
| AOK | | USA: United States of America | R: Railway | | Arkansas-Oklahoma | | | |
| AOM | | NL: Netherlands | V: Museum | | Amsterdams Openbaar vervoer Museum | | | |
| AOMC | | CH: Switzerland | R: Railway | | Aigle - Ollon - Monthey - Champéry | | | |
| APA | | USA: United States of America | R: Railway | | Apache Railway Company | | | |
| APACSA | | EC: Ecuador | A: Aviation | | Apacsa Agrolineas del Pacifico SA | | | |
| APAM | | I: Italy | B: Bus | Mantova | Apam Esercizio SpA | | https://www.apam.it/ | |
| APB | | DK: Denmark | R: Railway | | Aalborg Privatbaner | 1917 - 1969 | | |
| APD | | USA: United States of America | R: Railway | | Albany Port District | | | |
| APG | | RP: Philippines | A: Aviation | | Philippines AirAsia | | https://en.wikipedia.org/wiki/Philippines_AirAsia | |
| APHX | | USA: United States of America | I: Industry (user) | | Air Products Polymers, L.P. | | | |
| APJ | | J: Japan | A: Aviation | | Air Peach | | | |
| APPX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Appalachan Railcar Services, Inc. | | | |
| APS | | I: Italy | O: Organisation | | Autoritá Portuale di Savona | | | |
| APTS | | J: Japan | B: Bus | | Airport Transport Service Co. | | | |
| APYR | | F: France | A: Aviation | | Air Pyrénées | | | |
| AQRS | | F: France | M: Industry (railway maintenance) | | Aquitaine Rail | | | |
| AR | AN | NL: Netherlands | ??? | | Arriva Nederland | | www.arriva.nl/ | |
| ARA | | USA: United States of America | R: Railway | | Arcade & Attica R.R. Corp. | | | |
| ARAD | | RO: Romania | C: City traffic | Arad | | | | |
| ARAMIS | | PL: Poland | B: Bus | | Przewóz Osób i Towarów Firma Aramis, Dariusz Armatys | | | |
| ARBED | | L: Luxembourg | I: Industry (user) | | Aciéries Réunies de Burbach-Eich-Dudelange | | https://en.wikipedia.org/wiki/ARBED | |
| ARBTP | | PL: Poland | B: Bus | | Arriva Bus Transport Polska | | https://pl.wikipedia.org/wiki/Arriva_Bus_Transport_Polska | |
| ARC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Amey Roadstone Corporation | | | |
| ARCE | | ??? | I: Industry (user) | | ARCELOR | | | |
| ARCESE | | I: Italy | L: Logistics company | | Arcese | | | |
| ARCHI | | GR: Greece | M: Industry (railway maintenance) | | Archirodon | | | |
| ARCM | | EU: European Union | I: Industry (user) | | Arcelor Mittal | | | |
| ARCO | | D: Germany | R: Railway | | ARCO Transportation GmbH | | | |
| ARCZ | ARR | CZ: Czech Republic | R: Railway | | Arriva vlaky s.r.o. | | arriva.cz | |
| ARD | | PE: Peru | A: Aviation | | Aerocondor | | https://en.wikipedia.org/wiki/Aerocondor | |
| ARDE | | D: Germany | ??? | | Arriva Deutschland | | | |
| ARE | | CO: Colombia | A: Aviation | | Aires Colombia: Aerovías de Integración Regional S.A. | Trade name: LATAM Airlines Colombia | https://en.wikipedia.org/wiki/LATAM_Colombia | |
| ARFER | | I: Italy | M: Industry (railway maintenance) | | Ar.Fer S.r.l. | | http://www.clfspa.it/Sezione.jsp?titolo=Ar.Fer&idSezione=114 | |
| ARG | | AUS: Australia | R: Railway | | Australian Railroad Group | | | |
| ARGA | | RA: Argentina | Y: Military | | Argetin Army | | | |
| ARH | | SU: Sovietunion | C: City traffic | Arkhangelsk | | | | |
| ARIDA | | J: Japan | V: Museum | | Aridagawa Railway Museum | | | |
| ARKA | | PL: Poland | B: Bus | | Arka Bus | | | |
| ARL | | GB: United Kingdom of Great Britain and Northern Ireland | X: Phantasy | | Arlesdale Miniature Railway | | | |
| ARLIOR | | SK: Slovakia | B: Bus | | Arriva Liorbus | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| ARLN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva London North | | | |
| ARLS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva London South | | | |
| ARLX | ARL | USA: United States of America | RO: Railway operator | | Armour Refrigerator Line | | | |
| ARMD | | USA: United States of America | R: Railway | | Arnaud Railway | | | |
| ARMN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Midland North | | | |
| ARN | | CDN: Canada | R: Railway | | Alberta RailNet | | | |
| ARNB | | USA: United States of America | S: Street transport company | | Arnold Brothers Transport Ltd. | | | |
| ARNE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva London North-East | | | |
| ARNO | arn | CDN: Canada | A: Aviation | | Air Nova | | https://en.wikipedia.org/wiki/Air_Nova | |
| AROF | AR | USA: United States of America | R: Railway | | Aberdeen and Rockfish R.R. Co. | | | |
| ARPA | | I: Italy | B: Bus | Chieti | Autolinee Regionali Pubbliche Abruzzesi | | http://www.arpaonline.it/ | |
| ARPL | | PL: Poland | R: Railway | | Arriva Polska | | | |
| ARR | | USA: United States of America | R: Railway | | Alaska Railroad | | | |
| ARRIVA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | | | | |
| ARRNE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva North East | | | |
| ARRNR | | SK: Slovakia | B: Bus | | Arriva Nitra | | | |
| ARRNZ | | SK: Slovakia | B: Bus | | ARRIVA Nové Zámky | | | |
| ARROW | | USA: United States of America | B: Bus | | Arrow Motor Coach Inc. | | | |
| ARRS | | S: Sweden | RT: Regional transport company | | Arriva Sverige AB | | | |
| ARRTEP | | CZ: Czech Republic | C: City traffic | Tepliece | Arriva Teplice s.r.o. | | https://cs.wikipedia.org/wiki/Arriva_Teplice | |
| ARRTRN | | SK: Slovakia | B: Bus | | Arriva Trnava | | | |
| ARRY | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Yorkshire | | arriva.cz | |
| ARS | | D: Germany | ??? | | ARS Altmann AG | | http://www.ars-altmann.de/ | |
| ARSLO | | SLO: Slovenia | B: Bus | | Arriva Slovenija | | | |
| ARSS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Southend-on-Sea | | | |
| ART | | USA: United States of America | RO: Railway operator | | American Refrigerator Transit Company | The American Refrigerator Transit Company (ART) was a St. Louis, Missouri-based private refrigerator car line established in 1881 by the Missouri Pacific and Wabash railroads. It is now a subsidiary of the Union Pacific Corporation. | https://en.wikipedia.org/wiki/American_Refrigerator_Transit_Company | |
| ARTOG | | DK: Denmark | R: Railway | | Arriva Tog | 2003 - | | |
| ARTS | AR | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Anglia Railways Train Services Ltd. | 1999: 614km standard gauge, electrified at 25kV 50Hz Anglia Railways was a British train operating company, owned by GB Railways, which between 5 January 1997 and 31 March 2004 operated mainline trains out of London Liverpool Street station and a number of local rail services in East Anglia. On April 1, 2004 its franchise was transferred to Train Operating Company London Eastern Railway Ltd, which is a subsidiary of the National Express Group. Its services are branded 'one'. | | |
| ARVEDI | | I: Italy | I: Industry (user) | | Arvedi Acciaieria (Steel works) | | | |
| ARWA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriwa Wales | | | |
| ARZC | | USA: United States of America | R: Railway | | Arizona & California Railroad Company | | | |
| ARZT | | D: Germany | B: Bus | | Arzt Reisen | | | |
| ASAB | | USA: United States of America | R: Railway | | Atlanta & Saint Andrews Bay Ry. Co. | | | |
| ASAHI | | J: Japan | B: Bus | | Asahikawa Denkikidou (Asahikawa Electric Railway) | Previously operated a few suburban tramway lines | | |
| ASAN | | PL: Poland | T: Type of car, lorry | | Autosan | | | |
| ASBURY | | USA: United States of America | B: Bus | | Asbury Park - New York Transit | | | |
| ASCEN | | EU: European Union | P: Pool (Leasing / wagon pool) | | Ascendos Rail Leasing | | https://en.wikipedia.org/wiki/Ascendos_Rail_Leasing | |
| ASD | | CH: Switzerland | R: Railway | | Aigle - Sépey - Diablerets | | | |
| ASDA | | USA: United States of America | R: Railway | | Asbestos & Danville | | | |
| ASEA | | S: Sweden | ??? | | Asea Brown Boweri | | | |
| ASFER | | I: Italy | R: Railway | | AS-FER Ferraioli Dutto s.r.l. | | | |
| ASH | | USA: United States of America | A: Aviation | | Mesa Airlines | | https://en.wikipedia.org/wiki/Mesa_Airlines | |
| ASHL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Ashford Luxury Coaches | | | |
| ASHLCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Ashton-under-Lyne Corporation Passenger Transport | | | |
| ASIK | | PL: Poland | B: Bus | | ASIK Sp. z o.o. | | www.asik.com.pl | |
| ASKA | | CH: Switzerland | B: Bus | | Auto-Verkehr Spiez - Kräatigen - Aeschi | | | |
| ASKAZ | | PL: Poland | B: Bus | | Aska Żory | | | |
| ASM | | I: Italy | C: City traffic | Venice | Azienda Servizi Mobilita S.p.A. | | | |
| ASN | | USA: United States of America | X: Phantasy | | Allentown Scranton and Northern | | | |
| ASP | | D: Germany | RO: Railway operator | | Anschlussbahn-Servicegesellschaft Pressnitztalbahn mbH | | | |
| ASQ | | USA: United States of America | A: Aviation | | Atlantic Southeast Airlines | | https://en.wikipedia.org/wiki/Atlantic_Southeast_Airlines | |
| ASRR | ASR | USA: United States of America | V: Museum | | Adirondack Scenic Railroad | | | |
| ASSOCB | | USA: United States of America | B: Bus | | Associated Bus Company, NJ | | | |
| ASTUR | | F: France | C: City traffic | | Association de Sauvegarde des Transports Urbains de Reims | | | |
| ASV | | ROK: Korea | A: Aviation | | Air Seoul | | | |
| ASWA | SWA | USA: United States of America | A: Aviation | | Southwest Airlines | | | |
| ASWS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva Surrey & West Sussex | | | |
| AT | | EU: European Union | P: Pool (Leasing / wagon pool) | | Alpha Trains | | | |
| ATAC | | I: Italy | C: City traffic | Roma | | | | |
| ATAF | | I: Italy | C: City traffic | Firenze | Azienda Trasporti dell'Area Fiorentina | | Firenze | |
| ATAN | | I: Italy | C: City traffic | Napoli | | | | |
| ATB | | I: Italy | C: City traffic | Bergamo | Azienda Trasporti Bergamo | | https://www.atb.bergamo.it/en | |
| ATBT | AtB | N: Norway | C: City traffic | | AtB Trondheim | | | |
| ATC | | B: Belgium | R: Railway | | Angel Trains Cargo | | | |
| ATCA | | RO: Romania | R: Railway | | Astra Trans Carpatic | | https://www.astratranscarpatic.ro/ | |
| ATCM | | I: Italy | R: Railway | Modena | Azienda Trasporti Collettivi e Mobilita | | | |
| ATCR | ATC | RO: Romania | RO: Railway operator | | Astra Trans Carpatic | | | |
| ATCX | | USA: United States of America | R: Railway | | Austin & Texas Central | | | |
| ATFA | | I: Italy | ??? | | A.T.F. Arienti | | http://www.atfarienti.com | |
| ATG | | D: Germany | R: Railway | Eschborn | Autotransportlogistic GmbH | verschmolzen auf DB Schenker Rail Automotive GmbH | | |
| ATGM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva TGM (Tellings-Golden Miller) | | http://en.wikipedia.org/wiki/Tellings-Golden_Miller | |
| ATHA | THA | T: Thailand | A: Aviation | | Thai Airways International | | | |
| ATHEN | OASA | GR: Greece | C: City traffic | | Athens Urban Transport Organisation | | https://en.wikipedia.org/wiki/Transport_for_Athens | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| ATIR | | F: France | P: Pool (Leasing / wagon pool) | | ATIR-RAIL S.A. | | http://www.atir-rail.com | |
| ATLAS | | USA: United States of America | A: Aviation | | Atlas | | | |
| ATLX | | US-NY: USA, New York | B: Bus | | Atlantic Express | | | |
| ATM | | I: Italy | C: City traffic | Milano | Azienda Trasporti Milanesi | | https://en.wikipedia.org/wiki/Azienda_Trasporti_Milanesi | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| ATMB | | I: Italy | C: City traffic | Bologna | | | | |
| ATME | ATM | I: Italy | C: City traffic | | Azienda Transporti di Messina | | | |
| ATMT | | I: Italy | C: City traffic | Torino | | | | |
| ATN | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Arriva Trains Northern | 1999: 2043km standard gauge, electrified at 25kV 50Hz Arriva Trains Northern was a train operating company that operated passenger trains in Northern England. The company had previously been known as Northern Spirit before being taken over Arriva. The franchise was taken over by Northern Rail in December 2004. | | |
| ATPM | | M: Malta | B: Bus | | Assocjazzjoni Trasport Pubbliku | | | |
| ATRAM | | PL: Poland | C: City traffic | | Autotram Jerzy Grondalski | | | |
| ATRI | | E: Spain | P: Pool (Leasing / wagon pool) | | Alpha Trains Iberia | | | |
| ATROL | | HR: Croatia | C: City traffic | Rijeka | Komunalno Društvo Autotrolej doo | | | |
| ATSF | | USA: United States of America | R: Railway | | Atchison, Topeka & Santa Fe Railway | | | |
| ATSH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Arriva The Shires | | | |
| ATW | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Arriva Trains Wales | Arriva Trains Wales / Trenau Arriva Cymru is a train operating company that operates urban and inter urban passenger services in Wales and the Welsh Marches. The company was formed when Wales and West was split into Wales and Borders and Wessex Trains. Initially both were operated by National Express Group, which presently owns seven of the UK’s 25 operators. Arriva won the Wales and Borders franchise in 2003 and promptly renamed the company Arriva Trains Wales. They operate almost all services in Wales, with the execption of long distance express services | http://www.arrivatrainswales.co.uk/ | |
| ATWR | ATW | USA: United States of America | R: Railway | | Atlantic and Western | | | |
| AUA | | A: Austria | A: Aviation | | Austrian Airlines | | | |
| AUAR | | USA: United States of America | R: Railway | | Austin Area Terminal Railroad | | | |
| AUCH | | US-PA: USA, Pennsylvania | B: Bus | Philadelphia | Auch Inter-Borough Transit Co | | | |
| AUCK | AT | AUS: Australia | C: City traffic | Auckland | Auckland Transport | | | |
| AUDI | | D: Germany | T: Type of car, lorry | | Audi | | | |
| AUGU | | I: Italy | F: Industry (manufacturer) | | Augusta | | | |
| AURZ | | AUS: Australia | R: Railway | | Aurizon | | | |
| AUS | | AUS: Australia | ??? | | Australia | | | |
| AUSA | | AUS: Australia | Y: Military | | Australian Army | | | |
| AUTC | | AUS: Australia | R: Railway | | Austrac Operations | | | |
| AUTO | ATC | USA: United States of America | R: Railway | | Autotrain Corporation | | | |
| AVA | | CO: Colombia | A: Aviation | | Avianca: Aerovias del Continente Americano S.A. | | https://en.wikipedia.org/wiki/Avianca | |
| AVAG | AVA | CH: Switzerland | RT: Regional transport company | | Aargau Verkehr AG | | https://de.wikipedia.org/wiki/Aargau_Verkehr | |
| AVEB | | USA: United States of America | B: Bus | | Ave. B & East Broadway | | | |
| AVG | | D: Germany | C: City traffic | Karlsruhe | Albtal-Verkehrsgesellschaft | | | |
| AVJ | | DK: Denmark | V: Museum | | Aabenraa Veteran Jernbane | | | |
| AVL | | L: Luxembourg | C: City traffic | | Luxembourg City Bus | | https://lb.wikipedia.org/wiki/Autobus_de_la_Ville_de_Luxembourg | |
| AVR | | USA: United States of America | R: Railway | | Allegheny Valley R.R. Co. | | | |
| AWB | | AUS: Australia | I: Industry (user) | | Australian Wheat Board | | | |
| AWC | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | Titan Airways | | https://en.wikipedia.org/wiki/Titan_Airways | |
| AWI | | USA: United States of America | A: Aviation | | Air Wisconsin | | https://en.wikipedia.org/wiki/Air_Wisconsin | |
| AWP | | USA: United States of America | R: Railway | | Atlanta & West Point | | | |
| AWQ | | RI: Indonesia | A: Aviation | | Indonesia AirAsia | | https://en.wikipedia.org/wiki/Indonesia_AirAsia | |
| AWT | | CZ: Czech Republic | R: Railway | | Advanced World Transport a.s. | ehemalige OKD, Doprava a.s. | http://de.wikipedia.org/wiki/Advanced_World_Transport | |
| AWW | | USA: United States of America | R: Railway | | Algiers, Winslow and Western Ry. Co. | | | |
| AXBSK | | SK: Slovakia | M: Industry (railway maintenance) | | AXBENET, s.r.o. | | | |
| AXM | | MAL: Malaysia | A: Aviation | | AirAsia | | | |
| AXU | | UAE: United Arab Emirates | A: Aviation | | Abu Dhabi Aviation Co. | | https://en.wikipedia.org/wiki/Abu_Dhabi_Aviation | |
| AZ | ADDY | AZ: Azerbaijan | R: Railway | | Azerbaycan Dövlet Demir Yolu | | | |
| AZAFT | | E: Spain | O: Organisation | | Asociación Zaragozana de Amigos del Ferrocarril y Tranvías | | | |
| AZAL | AHY | AZ: Azerbaijan | A: Aviation | | Azerbaijan Airlines | | https://en.wikipedia.org/wiki/Azerbaijan_Airlines | |
| AZCR | | USA: United States of America | R: Railway | | Arizona Central Railroad / Verde Canyon Railroad | The Arizona Central Railroad (reporting mark AZCR) is an Arizona shortline railroad that operates from a connection with the BNSF Railway at Drake. The AZCR runs 37.8 miles (60.8 km) from Drake to Clarkdale, Arizona. An excursion train also runs on the line through Verde Canyon and is operated by the same owners under the Verde Canyon Railroad. | | |
| AZD | | CS: Czechslowakia | R: Railway | | AZD Praha s.r.o | | | |
| AZER | | USA: United States of America | R: Railway | | Arizona Eastern Railway Company | | | |
| AZUR | | F: France | C: City traffic | Nice | Lignes d'Azur | Lignes d'Azur is the commercial name under which the networks of the Nice Côte d'Azur Metropolis and the Alpes-Maritimes 1 departmental council have been operated since 2010 | https://fr.wikipedia.org/wiki/Lignes_d%27Azur | |
| AZVI | | E: Spain | M: Industry (railway maintenance) | | | | | |
| B1 | | ??? | Z: Scale | | JBSS Bahn 1x | | | |
| B2 | | ??? | Z: Scale | | JBSS Bahn 2x | | | |
| B4 | | ??? | Z: Scale | | JBSS Bahn 4x | | | |
| B5 | | ??? | X: Phantasy | | Babylon 5 | Scifi film | | |
| BA | BAW | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British Airways | | https://en.wikipedia.org/wiki/British_Airways | |
| BABY | | USA: United States of America | C: City traffic | | Babylon Transit | | | |
| BACH | | D: Germany | B: Bus | | Verkehrsbetriebe Bachstein | | https://www.vb-bachstein.de | |
| BACS | | H: Hungary | B: Bus | | Bács Volán | | | |
| BAD | | D: Germany | B: Bus | Baden-Baden | Stadtwerke Baden-Baden | Bis 2018 wurde der Name Baden-Baden Linie genutzt. | | |
| BADSTB | | D: Germany | R: Railway | | Großherzoglich Badische Staatseisenbahnen | | | |
| BAF | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British Air Ferries | | | |
| BAG | | D: Germany | I: Industry (user) | | Bayernwerk AG. | | | |
| BAGL | | CH: Switzerland | I: Industry (user) | Langenthal | Bucher AG | | | |
| BAK | | H: Hungary | B: Bus | | Bakony Volán | | | |
| BAKU | | SU: Sovietunion | C: City traffic | Baku | | | | |
| BAL | | H: Hungary | B: Bus | | Balaton Volán | | | |
| BALTA | | LV: Latvia | B: Bus | | SAI Baltijas Autobusu Linjas, Riga | | | |
| BAM | | CH: Switzerland | R: Railway | | Chemin de fer Bière-Apples-Morges | | | |
| BAMB | | D: Germany | B: Bus | | Bamberger Busreisen 3000 GmbH | | | |
| BAME | | CH: Switzerland | B: Bus | | Busbetriebe Bamert | | https://www.bamertbus.ch/ | |
| BAMERT | | CH: Switzerland | B: Bus | | Busbetriebe Bamert GmbH | | | |
| BANTAG | | S: Sweden | R: Railway | | Bantåg Nordic AB | | | |
| BAP | | USA: United States of America | R: Railway | | Butte, Anaconda & Pacific Ry. | | | |
| BAR | | USA: United States of America | R: Railway | | Bangor & Aroostook | | | |
| BARR | BA | USA: United States of America | R: Railway | | Boston & Albany Railroad | | | |
| BASF | | D: Germany | I: Industry (user) | | BASF | | www.basf.de/ | |
| BASHI | | PRC: China | C: City traffic | Shanghai | Bashi Group | | | |
| BATA | | CZ: Czech Republic | I: Industry (user) | | Bata | | | |
| BAY | | D: Germany | R: Railway | | Königlich Bayerische Staatseisenbahnen | | https://en.wikipedia.org/wiki/Royal_Bavarian_State_Railways | |
| BAYER | | D: Germany | I: Industry (user) | | Bayer Dormagen | | | |
| BAYL | | USA: United States of America | R: Railway | | Bay Line | | | |
| BAYVIEW | | USA: United States of America | B: Bus | | Bayview Bus Lines, NJ | | | |
| BAZ | | UA: Ukraine | T: Type of car, lorry | | Chernihiv Automotive Plant | | | |
| BB | | CH: Switzerland | R: Railway | | | | | |
| BBA | | NL: Netherlands | B: Bus | | Brabantsche Buurtspoorwegen en Autodiensten | | https://nl.wikipedia.org/wiki/BBA_(openbaar_vervoer) | |
| BBB | | US-CA: USA, California | C: City traffic | Santa Monica | Big Blue Bus | | www.bigbluebus.com | |
| BBC | | CH: Switzerland | F: Industry (manufacturer) | | Brown, Boveri & Compagnie | | https://en.wikipedia.org/wiki/Brown,_Boveri_%26_Cie | |
| BBCA | BBC | BD: Bangladesh | A: Aviation | | Biman Bangladesh Airlines | | | |
| BBG | | D: Germany | C: City traffic | Eberswalde | Barnimer Busgesellschaft mbH | | | |
| BBH | | D: Germany | B: Bus | | Bahnbus Hochstift GmbH | | | |
| BBI | | D: Germany | I: Industry (user) | | Bayerischen Braunkohle-Industrie, Schwandorf | | | |
| BBIRD | | USA: United States of America | T: Type of car, lorry | | Blue Bird | | https://www.blue-bird.com/ | |
| BBL | | D: Germany | R: Railway | | BBL Logistik GmbH | | | |
| BBO | | A: Austria | R: Railway | | Bundesbahn Österreich | | | |
| BBS | | D: Germany | B: Bus | | BBS Brandner Bus Schwaben Verkehrs GmbH | | | |
| BBUS | | A: Austria | B: Bus | | BundesBus | | | |
| BBV | | D: Germany | B: Bus | Siegburg | Bus u. Bahn Verkehrsgesellschaft mbH: BBV | | | |
| BCAB | | MEX: Mexico | C: City traffic | | Transportes de Baja California Azul y Blanco | | | |
| BCAR | | B: Belgium | R: Railway | | B Cargo | | | |
| BCAX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Blue Circle Atlantic, Inc. | | | |
| BCB | | D: Germany | R: Railway | | Bayern Cargo Bahn | | | |
| BCC | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | Blue Circle Cement | ~Sorin Oprisan | | |
| BCE | | CDN: Canada | I: Industry (user) | | British Columbia Electric (BC Hydro) | | | |
| BCH | bc | BY: Belarus | R: Railway | | Belarukaya Chygunka | | | |
| BCHM | BC | CH: Switzerland | V: Museum | | Blonay-Chamby Chemin de fer-Musée | | http://www.blonaychamby.ch/ | |
| BCHY | BCH | CDN: Canada | I: Industry (user) | | British Columbia Hydro and Power Authority | | | |
| BCK | | USA: United States of America | R: Railway | | Buffalo Creek Railroad | | | |
| BCLR | | USA: United States of America | R: Railway | | Bay Colony R.R. Corp. | | | |
| BCOL | | CDN: Canada | R: Railway | | British Columbia Railway (BC Rail) | | | |
| BCR | | USA: United States of America | R: Railway | | Bay Coast Railroad | | | |
| BCRR | | ??? | ??? | | | | | |
| BCS | | H: Hungary | N: Narrow gauge railway | | Békéscsaba | | | |
| BCT | | CDN: Canada | B: Bus | | Bureau of Transit Services (Vancouver BC) | | | |
| BCTC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Blackburn Corporation Tramways Company | | http://en.wikipedia.org/wiki/Blackburn_Corporation_Tramways | |
| BCTR | | CDN: Canada | B: Bus | | British Columbia Transit Co. | | | |
| BCTRL | | CDN: Canada | C: City traffic | | British Columbia Transitlink | | | |
| BCVX | | USA: United States of America | R: Railway | | West Coast Express | | | |
| BCY | | IRL: Republic of Ireland | A: Aviation | | CityJet | | https://en.wikipedia.org/wiki/CityJet | |
| BD | | CH: Switzerland | R: Railway | | Bremgarten-Dietlikon-Bahn | | | |
| BDAF | | BD: Bangladesh | Y: Military | | Bangladesh Air Force | | | |
| BDEC | | USA: United States of America | R: Railway | | Bosques de Chihuahua | | | |
| BDK | | DK: Denmark | M: Industry (railway maintenance) | | Banedanmark (Rail Net Denmark) | Banedanmark is the infrastructure manager responsible for the national network in Denmark. BDK is responsible for - Maintenance and renewal of the railway network - Safety systems - Railway traffic management across the entire railway network - Construction of timetable and path allocation | http://www.bane.dk | |
| BDLX | | USA: United States of America | I: Industry (user) | | Budger Lumber | | | |
| BDR | | F: France | R: Railway | | Régie Départementale des Bouches du Rhône | Now under the name RDT13 | | |
| BDZ | | BG: Bulgaria | R: Railway | | Bulgarski Durzhavni Zheleznitsi | | | |
| BE | BEG | D: Germany | N: Narrow gauge railway | | Brohltal Schmalspur-Eisenbahn Betriebs-GmbH | | http://www.vulkan-express.de/ | |
| BEA | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British European Airways | | | |
| BEAC | BRLL | L: Luxembourg | P: Pool (Leasing / wagon pool) | | Beacon Rail | | https://beaconrail.com/ | |
| BEAF | BAF | B: Belgium | Y: Military | | Belgian Air Force / Belgian Air Component | | https://en.wikipedia.org/wiki/Belgian_Air_Component | |
| BEAR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Bear Buses | | | |
| BEAUR | | CDN: Canada | B: Bus | | Beaurepaire (Quebec) | | | |
| BEAV | | CDN: Canada | B: Bus | | Beaver Bus Lines | | | |
| BEB | | A: Austria | RL: Local railway | | Böhmisch-Emährische Bahn | | | |
| BEDZ | | PL: Poland | C: City traffic | | PKM Będzin | | | |
| BEDZIN | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Będzinie | | | |
| BEE | BE | D: Germany | R: Railway | | Bentheimer Eisenbahn AG | | www.bentheimer-eisenbahn.de/ | |
| BEELINE | | USA: United States of America | B: Bus | | Bee-Line | | | |
| BEF | | D: Germany | V: Museum | | Berliner Eisenbahnfreunde | | | |
| BEG | | D: Germany | R: Railway | | Brohltal-Eisenbahn Gesellschaft mbH | | | |
| BEGA | BEG | BG: Bulgaria | A: Aviation | | Bulgarian Eagle | | https://en.wikipedia.org/wiki/Bulgarian_Eagle | |
| BEHALA | | D: Germany | R: Railway | | Berliner Hafen- und Lagerhausgesellschaft mbH | | | |
| BEIJ | | PRC: China | C: City traffic | Beijing | Beijing Metro | | | |
| BEK | | D: Germany | R: Railway | | Bad Eilsener Kleinbahn | | | |
| BEL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Bus Engineering Limited | London Transport's Aldenham, along with Chiswick, was separated from the bus operating business by the formation of LRT Bus Engineering Limited in April 1985 | | |
| BELA | BEL | B: Belgium | A: Aviation | | Brussels Airlines | | https://en.wikipedia.org/wiki/Brussels_Airlines | |
| BELC | | B: Belgium | Y: Military | | Land Component (Belgian Army) | | | |
| BELLV | | CDN: Canada | C: City traffic | | Belleville Transit Commission | | | |
| BELM | | GB: United Kingdom of Great Britain and Northern Ireland | TB: Tourist agency | | Belmond Ltd. | | | |
| BEM | | G: Gabon | V: Museum | | Bayrische Eisenbahnmuseum Nördlingen | | | |
| BENKLER | | CH: Switzerland | M: Industry (railway maintenance) | | | | | |
| BENTELER | | D: Germany | I: Industry (user) | | Benteler Rohr | | | |
| BEOG | | YU: Yugoslavia | C: City traffic | Beograd | | | | |
| BER | BOB | CH: Switzerland | R: Railway | | Berner Oberland-Bahnen / Berner Oberland Railways | | | |
| BERA | ber | D: Germany | A: Aviation | | Air Berlin | | https://en.wikipedia.org/wiki/Air_Berlin | |
| BERCT | | D: Germany | B: Bus | | Berlin City Tour | | | |
| BERGA | | USA: United States of America | B: Bus | | Bergen Avenue IBOA | | | |
| BERGP | | USA: United States of America | B: Bus | | Bergen-Passaic Bus, NJ | | | |
| BERK | | NL: Netherlands | B: Bus | | Berkhof | | | |
| BERN | BM | CH: Switzerland | C: City traffic | Bern | BernMobil | | | |
| BES | | D: Germany | I: Industry (user) | | Brandenburger Elektrostahlwerk GmbH | | | |
| BESA | | F: France | C: City traffic | Besancon | | | | |
| BEST | | IND: India | C: City traffic | Bombay | Brihanmumbai Electric Supply and Transport | | | |
| BEVIANO | | USA: United States of America | B: Bus | | Beviano Bus Co. | | | |
| BEX | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Bexleybus | | | |
| BF | | H: Hungary | N: Narrow gauge railway | | Balatonfenyves | | | |
| BFD | | CH: Switzerland | N: Narrow gauge railway | | Brig - Furka - Disentis | The ancestor of the Furka-Oberalp Bahn. | | |
| BGAF | AFB | BG: Bulgaria | Y: Military | | Bulgarian Air Force | | https://en.wikipedia.org/wiki/Bulgarian_Air_Force | |
| BGCM | | USA: United States of America | R: Railway | | Bountiful Grain and Craig Mountain Railroad | | | |
| BGL | VBL | D: Germany | C: City traffic | Bergisch Gladbach | Verkehrsgesellschaft Bergisches Land mbH | | | |
| BGM | | D: Germany | C: City traffic | Bonn | | | | |
| BGU | | CH: Switzerland | B: Bus | | Busbetrieb Grenchen und Umgebung | | https://de.wikipedia.org/wiki/Busbetrieb_Grenchen_und_Umgebung | |
| BGW | | D: Germany | R: Railway | | Bahngesellschaft Waldhof AG | | | |
| BH | | D: Germany | C: City traffic | Bad Homburg | | | | |
| BHE | | D: Germany | R: Railway | | Buxtehude-Harsefelder Eisenbahn | | | |
| BHEV | | H: Hungary | R: Railway | Budapest | Budapesti Helyiérdekû Vasút | | | |
| BHP | | AUS: Australia | I: Industry (user) | | BHP Billiton | Mining company | | |
| BHPB | | AUS: Australia | I: Industry (user) | | BHP Billiton Iron Ore | | | |
| BHPX | | USA: United States of America | I: Industry (user) | | BHP Navajo Mine | | | |
| BHR | BH | USA: United States of America | R: Railway | | Bath and Hammondsport R.R. Co. | | | |
| BHS | | BS: Bahamas | A: Aviation | | Bahamasair | | https://en.wikipedia.org/wiki/Bahamasair | |
| BHW | | CH: Switzerland | B: Bus | | Busbetrieb Hinterthurgau - Wil | | | |
| BHY | | TR: Turkey | A: Aviation | | Birgenair | | | |
| BIAL | | PL: Poland | B: Bus | | Komunalne Przedsiębiorstwo Komunikacyjne | | | |
| BIEBER | | USA: United States of America | B: Bus | | Carl R. Bieber Tourways | | | |
| BIEL | | D: Germany | C: City traffic | Bielefeld | Stadtwerke Bielefeld / 2000: moBiel GmbH | | https://de.wikipedia.org/wiki/MoBiel | |
| BIG | | ??? | Z: Scale | | | | | |
| BIGB | | GB: United Kingdom of Great Britain and Northern Ireland | TB: Tourist agency | | The Big Bus Company | | | |
| BIHA | | BIH: Bosnia-Herzegovina | Y: Military | | | | | |
| BILB | | E: Spain | C: City traffic | Bilbao | Bilbobus | | | |
| BIRCH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Birch Bros | | | |
| BIRCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Birmingham Corporation Transport | | | |
| BIST | | USA: United States of America | C: City traffic | St. Louis | Metro Transit (Bi-State Development Agency) | | | |
| BIZK | | E: Spain | ??? | Bilbao | BizkaiBus | | https://en.wikipedia.org/wiki/BizkaiBus | |
| BJ | | DK: Denmark | R: Railway | | Den Bornholmske Jernbane | 1901 - 1952 | | |
| BK | | S: Sweden | R: Railway | | BK Tåg AB | 1989 - 2005 | | |
| BKK | | DDR: German Democratic Republic | I: Industry (user) | | Braunkohlekombinat Bitterfeld | | | |
| BKLC | | USA: United States of America | I: Industry (user) | | BOOTH-KELLY LUMBER Co | | | |
| BKM | | BY: Belarus | T: Type of car, lorry | | Belkommunmash | | https://en.wikipedia.org/wiki/Belkommunmash | |
| BKTAG | | S: Sweden | R: Railway | | BK Tåg Sverige AB | BK Tåg was one of the first private operators in Sweden. They started with passenger trains, but later freight trains followed. In March 2005 the passenger division of BK Tåg went bankrupt. The services operated by them (the Krösatågen network centered around Nässjö and Linköping-Kalmar/Västervik) were suspended. Freight services, like Oskarshamn-Silverdalen (wood) and Åhus/Karlstad-Göteborg (container train) are still operated and will continue in the future. | www.bktagsverige.se/ | |
| BKV | | H: Hungary | C: City traffic | Budapest | BKV | | | |
| BLA | | USA: United States of America | R: Railway | | The Baltimore and Annapolis R.R. Co. | | | |
| BLAG | | A: Austria | B: Bus | | Blaguss | | | |
| BLAGSK | | SK: Slovakia | B: Bus | | Blaguss Slovakia | | | |
| BLB | | D: Germany | R: Railway | | Berchtesgadener Land Bahn | | | |
| BLC | | USA: United States of America | R: Railway | | Belt Railway of Chicago | | | |
| BLDX | | DK: Denmark | R: Railway | | BLDX A/S | 2007 - | | |
| BLE | | D: Germany | R: Railway | | Butzbach - Licher Eisenbahn | | | |
| BLER | BLE | USA: United States of America | R: Railway | | Bessemer & Lake Erie Railroad | | | |
| BLF | | FIN: Finland | A: Aviation | | Blue1 Oy | | https://en.wikipedia.org/wiki/Blue1 | |
| BLG | | D: Germany | S: Street transport company | | BLG Logistics Group AG | General partner of Bremer Lagerhaus-Gesellschaft -Aktiengesellschaft | | |
| BLHX | | USA: United States of America | F: Industry (manufacturer) | | Baldwin-Lima-Hamilton Corp. | | | |
| BLIB | | D: Germany | B: Bus | | Berlin Linien Bus GmbH | | https://de.wikipedia.org/wiki/Berlin_Linien_Bus | |
| BLINK | | S: Sweden | B: Bus | | Busslink | 2000-2010 | https://sv.wikipedia.org/wiki/Busslink | |
| BLKP | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Blackpool | | | | |
| BLM | | CH: Switzerland | R: Railway | | Bergbahn Lauterbrunnen - Mürren | | | |
| BLODZV | | PL: Poland | O: Organisation | | Buslodz Volan | | | |
| BLOL | | USA: United States of America | R: Railway | | Bloomer Line | | | |
| BLS | | CH: Switzerland | R: Railway | | BLS AG (Bern-Lötschberg-Simplon-Bahn) | | https://en.wikipedia.org/wiki/Bern-L%C3%B6tschberg-Simplon-Bahn | |
| BLSC | | CH: Switzerland | R: Railway | | BLS Cargo | | | |
| BLT | | CH: Switzerland | C: City traffic | | Baselland Transport | | | |
| BLUBA | | D: Germany | V: Museum | | Blumberger Bahnbetrieb (Sauschwänzlebahn) | | | |
| BLUEG | | USA: United States of America | B: Bus | | Blue & Gray Transit, NJ | | | |
| BLUEW | | USA: United States of America | B: Bus | | Blue & White Bus Company, NJ | | | |
| BLUM | | D: Germany | T: Type of car, lorry | | CBV Blumhardt Fahrzeuge GmbH & Co. KG | | https://de.wikipedia.org/wiki/C._Blumhardt_Fahrzeugwerke | |
| BLV | | D: Germany | VC: Railway Friends Association | | Bayerischen Localbahn Verein e. V. | | https://www.blv-online.eu/ | |
| BLW | | ??? | ??? | | | | | |
| BM | | USA: United States of America | R: Railway | | Boston and Maine | | | |
| BMA | BMA, BD | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British Midland Airways (bmi: British Midland International) | | | |
| BMB | | D: Germany | V: Museum | Wuppertal | Bergische Museumsbahnen e.V. | | https://www.bmb-wuppertal.de/ | |
| BMC | | TR: Turkey | T: Type of car, lorry | | BMC Otomotiv Sanayi ve Ticaret A.S. | | | |
| BMCORP | | LB: Liberia | I: Industry (user) | | Bong Mine Corporation | | | |
| BMLP | | USA: United States of America | I: Industry (user) | | Black Mesa & Lake Powell Railroad | | | |
| BMMO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Birmingham and Midland Motor Omnibus Company | | | |
| BMPW | | PL: Poland | B: Bus | | Bus Marco Polo Wratislavia 1992 | | | |
| BMR | | CH: Switzerland | N: Narrow gauge railway | | ? (RhB) | | | |
| BMS | | USA: United States of America | I: Industry (user) | | Berlin Mills | | | |
| BMT | | USA: United States of America | C: City traffic | New York | Brooklyn Manhattan Transit | | | |
| BMTA | | USA: United States of America | B: Bus | | Baltimore Mass Transit Authority | | | |
| BMX | | USA: United States of America | I: Industry (user) | | The Barrett Division, Allied Chemical Corp. | | | |
| BN | | USA: United States of America | R: Railway | | Burlington Northern Railroad | | | |
| BNB | BN | CH: Switzerland | R: Railway | | Bern-Neuenburg-Bahn | | | |
| BNOR | | N: Norway | RI: Railway infrastructure company | | Bane NOR SF | | https://en.wikipedia.org/wiki/Bane_NOR | |
| BNSF | | USA: United States of America | R: Railway | | Burlington Northern Santa Fe | | | |
| BO | | USA: United States of America | R: Railway | | Baltimore and Ohio | | | |
| BOAC | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British Overseas Airways Corporation | | | |
| BOB | | D: Germany | R: Railway | | Bayerische Oberlandbahn | | | |
| BOCH | BOGESTRA | D: Germany | C: City traffic | Bochum | Bochum-Gelsenkirchener Straßenbahnen AG | | | |
| BOD | | D: Germany | R: Railway | | Bodensee-Oberschwaben-Bahn (BOB) | | | |
| BOE | | USA: United States of America | A: Aviation | | Boeing | | | |
| BOEG | | D: Germany | R: Railway | | Bocholter Eisenbahn Gesellschaft mbH | | | |
| BOGATYR | | ??? | I: Industry (user) | | Bogatyr (coal mine in Kazakhstan) | | | |
| BOGDAN | | UA: Ukraine | T: Type of car, lorry | | Bogdan | | | |
| BOGG | | CH: Switzerland | RT: Regional transport company | | Busbetrieb Olten Gösgen Gäu | | https://de.wikipedia.org/wiki/Busbetrieb_Olten_G%C3%B6sgen_G%C3%A4u | |
| BOH | | D: Germany | OA: Authority organizing city and regional transport | Bocholt | Stadtbus Bocholt GmbH | | https://de.wikipedia.org/wiki/Stadtbus_Bocholt | |
| BOLCK | | D: Germany | B: Bus | schleswig | Reisedienst Bölck GmbH | | | |
| BOLCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Bolton Corporation Transport | | | |
| BOLT | | USA: United States of America | B: Bus | | Bolt Bus | | | |
| BOMB | | CDN: Canada | F: Industry (manufacturer) | | Bombardier Transportation | | | |
| BONANZA | | USA: United States of America | B: Bus | | Bonanza | | | |
| BONN | | D: Germany | C: City traffic | Bonn | | | | |
| BOR | BKD | D: Germany | N: Narrow gauge railway | | Borkumer Kleinbahn und Dampfschiffahrt GmbH | | | |
| BORD | | F: France | C: City traffic | Bordeaux | | | | |
| BORM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Boro'line Maidstone | | | |
| BORO | | USA: United States of America | B: Bus | | Boro Busses | | | |
| BORS | | H: Hungary | B: Bus | | Borsod Volán | | | |
| BORV | | H: Hungary | B: Bus | | Borsod Volán | | | |
| BORX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | U.S. Borax Inc. | | | |
| BOS | | CH: Switzerland | B: Bus | | BUS Ostschweiz AG | until 2013 RTB Rheintal Bus AG | https://de.wikipedia.org/wiki/BUS_Ostschweiz | |
| BOST | MTA | USA: United States of America | B: Bus | | Boston Mass Transit Authority | | | |
| BOSW | | USA: United States of America | R: Railway | | Baltimore & Ohio Southwestern | | | |
| BOT | | BW: Botswana | A: Aviation | | Air Botswana Corp. | | | |
| BOV | | BOL: Bolivia | A: Aviation | | BoA: Boliviana de Aviacion | | | |
| BOX | | D: Germany | A: Aviation | | AeroLogic | | https://en.wikipedia.org/wiki/AeroLogic# | |
| BOXX | | D: Germany | RO: Railway operator | | boxXpress | | | |
| BPA | | D: Germany | V: Museum | | Bahnpark Augsburg | | | |
| BPDX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Bordens Produce Co. | | | |
| BPOD | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacyjny w Białej Podlaskiej Sp. z o.o. | | | |
| BPRM | | D: Germany | R: Railway | | Hafenbahn Baltic Port Rail Mukran | Broad gauge network - for connections to former soviet territory. | | |
| BPRR | | USA: United States of America | R: Railway | | Buffalo & Pittsburgh Railroad Incorporated | | | |
| BPT | | E: Spain | R: Railway | | Ferrocarriles de Bilbao a Portugalete y Triano | | | |
| BPTOUR | | PL: Poland | B: Bus | | Przedsiębiorstwo Wielobranżowe BP Tour Piotr Brewczak | | | |
| BR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | British Rail | 2000: 16652 km standard gauge, 3136 km electrified at 25kV 50Hz and 1393 km at 750V= 3rd rail | | |
| BRA | | D: Germany | C: City traffic | Brandenburg | | | | |
| BRADCY | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Bradford City Transport | | | |
| BRADO | | BR: Brazil | ??? | | Brado Logística | | | |
| BRAI | | RO: Romania | C: City traffic | Braila | S.C.Braicar S.A. | | | |
| BRAMP | | CDN: Canada | C: City traffic | | Brampton Transit | | | |
| BRAND | | CDN: Canada | B: Bus | | Brandon Transit | | | |
| BRANT | | CDN: Canada | B: Bus | | Brantford Transit | | | |
| BRAS | | RO: Romania | C: City traffic | Brașov | Regia Autonomă de Transport Brașov | | https://en.wikipedia.org/wiki/RATBV | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| BRASA | | BR: Brazil | Y: Military | | | | | |
| BRAT | | CDN: Canada | C: City traffic | | Brandtford Transit | | | |
| BRB | | D: Germany | R: Railway | | Bayerische RegioBahn | | | |
| BRC | | USA: United States of America | R: Railway | | Belt Railway of Chicago | | | |
| BRCT | | BD: Bangladesh | B: Bus | | Bangladesh Road Transport Corporation | | | |
| BRCX | | USA: United States of America | I: Industry (user) | | Bunge Corp. | | | |
| BRE | | D: Germany | C: City traffic | Bremen | | | | |
| BREM | | D: Germany | I: Industry (user) | | Stahlwerke Bremen GmbH | | | |
| BREMB | | I: Italy | F: Industry (manufacturer) | Bologna | BredaMenarinibus S.p.A | | https://en.wikipedia.org/wiki/BredaMenarinibus | |
| BRES | | D: Germany | N: Narrow gauge railway | | Bressingham Lilliput Eisenbahn | | | |
| BRET | RB | F: France | N: Narrow gauge railway | | Reseau Breton | | | |
| BREW | | A: Austria | N: Narrow gauge railway | | Bregenzerwald Museumsbahn | | | |
| BREWG | | CDN: Canada | B: Bus | | Brewster Gray Line | | | |
| BREX | | USA: United States of America | RO: Railway operator | | Burlington Refrigerator Express | | | |
| BRF | | CH: Switzerland | I: Industry (user) | | Brauerei Feldschlösschen | | | |
| BRGW | | D: Germany | T: Type of car, lorry | | Borgwart | | | |
| BRHS | | D: Germany | C: City traffic | Bremerhaven | Bremerhavener Straßenbahn | | | |
| BRIBB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Brighton Blue Bus Company | | | |
| BRIG | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Brighton | | | | |
| BRIHD | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Brighton Hove & District | | | |
| BRIHO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Brighton & Hove | Brighton & Hove was established in 1884 as Brighton, Hove and Preston United Omnibus Company. In November 1935 it was formed as the Brighton Hove and District Omnibus Company.[1] In January 1969 it merged with Southdown Motor Services as a subsidiary of the National Bus Company. In January 1985 in preparation for privatisation, Brighton & Hove was separated from Southdown. In May 1987 it was sold in a management buyout. In November 1993 Brighton & Hove was sold to the Go-Ahead Group. | | |
| BRIO | | TOY: Toy, model | ??? | | Brio wooden toy trains | | | |
| BRIX | | USA: United States of America | I: Industry (user) | | Incobrasa Industries Ltd. | | | |
| BRMB | | CH: Switzerland | R: Railway | | Brunnen-Morschach-Axenstein cog railway | | | |
| BRMI | | USA: United States of America | V: Museum | | Bluegrass Railroad Museum Inc. | | | |
| BRN | | D: Germany | B: Bus | | Busverkehr Rhein-Neckar GmbH | Es ist 1989 aus einer regionalen Bahnbus-Gesellschaft entstanden und eine Tochtergesellschaft der DB Regio AG. | | |
| BRNO | DPMB | CZ: Czech Republic | C: City traffic | Brno | | | | |
| BRONXV | | US-NY: USA, New York | B: Bus | | Bronxville Bus | | | |
| BROO | | USA: United States of America | C: City traffic | | Broome County Transit | | | |
| BRS | | D: Germany | B: Bus | | Busverkehr Ruhr-Sieg GmbH | | | |
| BRSM | | USA: United States of America | S: Street transport company | | Bruce R. Smith Limited | | | |
| BRU | | CH: Switzerland | R: Railway | | SBB Brünigbahn | | | |
| BRUECKNER | | D: Germany | B: Bus | | Reisedienst Brückner | | | |
| BRUX | | B: Belgium | B: Bus | Bruxelles | | | | |
| BRW | | USA: United States of America | R: Railway | | Black River and Western Corp. | | | |
| BRY | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | Brymon Airways | | https://en.wikipedia.org/wiki/Brymon_Airways | |
| BS | | USA: United States of America | R: Railway | | Birmingham Southern Railroad Company | | | |
| BSAG | | D: Germany | C: City traffic | Bremen | Bremer Straßenbahn AG | | https://de.wikipedia.org/wiki/Bremer_Stra%C3%9Fenbahn_AG | |
| BSB | | D: Germany | R: Railway | | Breisgau-S-Bahn-Gesellschaft | | http://www.breisgau-s-bahn.de/ | |
| BSBS | BSB | CH: Switzerland | R: Railway | | Bern-Scharzenburg-Bahn | | | |
| BSCG | | PL: Poland | B: Bus | | Bus Service Center Sp, Gliwice | | | |
| BSE | | D: Germany | R: Railway | | Braunschweig-Schöniger Eisenbahn | | | |
| BSERV | bs | N: Norway | M: Industry (railway maintenance) | | Baneservice | | http://www.baneservice.no/ | |
| BSM | | D: Germany | C: City traffic | Monheim | Bahnen der Stadt Monheim | | https://de.wikipedia.org/wiki/Bahnen_der_Stadt_Monheim | |
| BSMG | BSM | D: Germany | M: Industry (railway maintenance) | | Bahnservice Mannheim GmbH | | | |
| BSMS | BSM | S: Sweden | R: Railway | | BSM Järnväg | 1997 - 2000 | | |
| BSMTA | | USA: United States of America | C: City traffic | Boston | Metropolitan Transit Authority | | | |
| BSOR | | USA: United States of America | R: Railway | | Buffalo Southern R.R., Inc. | | | |
| BSR | | USA: United States of America | R: Railway | | Big Spring Rail System Inc. | | http://www.bigspringrailsystem.com | |
| BSRX | | USA: United States of America | R: Railway | | Branson Scenic Railway | | | |
| BSTAR | | GB: United Kingdom of Great Britain and Northern Ireland | SH: Shipping company | | Blue Star Line Ltd. (1920) | | | |
| BSTR | | D: Germany | B: Bus | | Becker-Strelitz Reisen GmbH | | | |
| BSW | | D: Germany | R: Railway | | | | | |
| BSX | | S: Sweden | R: Railway | | BSX Tåg AB | 1994 - 1997 | | |
| BSZK | | H: Hungary | C: City traffic | Budapest | BSzKRT - Budapest Székesfõvárosi Közlekedési Részvénytársaság | | | |
| BT | | CH: Switzerland | R: Railway | | Bodensee-Toggenburg-Bahn | | | |
| BTAG | | S: Sweden | M: Industry (railway maintenance) | | Bantåg - Railcare Group | | | |
| BTB | | CH: Switzerland | R: Railway | | Baselland Transport Birsigtalbahn | | | |
| BTE | | D: Germany | ??? | | BahnTouristikExpress | | | |
| BTI | | CH: Switzerland | R: Railway | | Biel-Täuffelen-Ins-Bahn | | | |
| BTS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Borehamwood Travel Services | | | |
| BTSC | | T: Thailand | C: City traffic | | Bangkok Mass Transit System PCL | | | |
| BTSV | | CDN: Canada | B: Bus | Vancouver BC | Bureau of Transit Services | | | |
| BTUR | | LT: Lithuania | B: Bus | | UAB Busturas | | https://de.wikipedia.org/wiki/Busturas | |
| BUAF | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | British United Air Ferries | | | |
| BUDD | | USA: United States of America | F: Industry (manufacturer) | | | | | |
| BUFB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Buffalo Bus of Flitwick | | | |
| BUG | | D: Germany | M: Industry (railway maintenance) | | BUG Verkehrsbau AG | This new track maintenance company originates from the company Bau und Unterhaltung von Gleisanlagen (BUG), founded in 1990. It is based in Berlin. As BUG is not yet registered as an operator, the stock is actually in service for OHE-Sp. | www.bug-ag.de/ | |
| BULK | BTS | SK: Slovakia | RO: Railway operator | | Bulk Transshipment Slovakia, a.s. | | | |
| BUNA | | DDR: German Democratic Republic | I: Industry (user) | | Buna Werke | | | |
| BURGAS | | BG: Bulgaria | C: City traffic | Burgas | Burgasbus | | | |
| BURL | | USA: United States of America | R: Railway | | | | | |
| BURT | | CDN: Canada | C: City traffic | | Burlington Transit | | | |
| BUSSING | | D: Germany | T: Type of car, lorry | | | | | |
| BUTJ | | D: Germany | R: Railway | | Butjadinger Bahn | | http://de.wikipedia.org/wiki/Butjadinger_Bahn | |
| BUZZ | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Buzz Co-operative | | | |
| BV | | S: Sweden | M: Industry (railway maintenance) | | Banverket | Banverket actually 'owns' all the Swedish tracks. They keep the tracks in good shape, and SJ and the regional railways have to pay for the use of the tracks to Banverket. Banverket owns some locomotives and shunters for track maintenance trains, and snow plows. These are all operated by drivers of BK Tåg. | www.banverket.se/ | |
| BVB | | CH: Switzerland | C: City traffic | Basel | | | | |
| BVBD | BVB | DDR: German Democratic Republic | C: City traffic | Berlin | | | | |
| BVG | | D: Germany | C: City traffic | Berlin | | | | |
| BVO | | D: Germany | B: Bus | Annaberg | | | | |
| BVOD | | D: Germany | B: Bus | Detmold | | | | |
| BVOW | BVO | D: Germany | B: Bus | | Busverkehr Ostwestfalen GmbH | | | |
| BVR | | D: Germany | B: Bus | | | | | |
| BVT | | MAL: Malaysia | A: Aviation | | Berjaya Air | | | |
| BVZ | | CH: Switzerland | R: Railway | | Zermatt-Bahn | | | |
| BW | | D: Germany | Y: Military | | Bundeswehr | | | |
| BWAY | | USA: United States of America | B: Bus | | Broadway IBOA | | | |
| BWB | | D: Germany | N: Narrow gauge railway | | Buchhorster Waldbahn | | http://www.buchhorster-waldbahn.de/ | |
| BWCX | | USA: United States of America | I: Industry (user) | | Berwind-White Coal Mining Co. | | | |
| BWG | | D: Germany | C: City traffic | Braunsweig | Braunschweiger Verkehrs-GmbH | 1972-2014: Braunschweiger Verkehrs-AG | https://de.wikipedia.org/wiki/Braunschweiger_Verkehrs-GmbH | |
| BWLE | | D: Germany | R: Railway | | Braunschweigische Landesbahn | | | |
| BWSC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Cardiff Bus | | | |
| BXS | | E: Spain | A: Aviation | | Spantax S.A. | Spantax S.A. was a Spanish leisure airline headquartered in Madrid that operated from 1959 to 1988. | https://en.wikipedia.org/wiki/Spantax | |
| BXVB | | CH: Switzerland | R: Railway | | Bex-Villars-Bretaye | | | |
| BYB | | D: Germany | V: Museum | | Bayern Bahn Betriebsgesellschaft | This company is the "commercial" part of the Bayerisches Eisenbahnmuseum in Nördlingen. They operate freight services to Wassertrüdingen and work trains to Dinkelsbühl, Dombühl and Gunzenhausen. | www.bayernbahn.de/ | |
| BYD | | PL: Poland | C: City traffic | Bydgoszcz | MZK Bydgoszcz | | | |
| BYDA | | PRC: China | T: Type of car, lorry | | BYD Auto | | | |
| BZB | | D: Germany | R: Railway | | Bayerische Zugspitzbahn | | | |
| BZH | | F: France | A: Aviation | | Brit Air | | https://en.wikipedia.org/wiki/Brit_Air | |
| BZK | | PL: Poland | B: Bus | Bochnia | Bocheński Zakład Komunikacji | | | |
| C2C | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | c2c Rail (former LTS Rail Ltd.) | 1999: 128km standard gauge, electrified at 25kV 50Hz c2c is a train operating company that provides train services, on a franchise basis, on the London, Tilbury & Southend line from Fenchurch Street in the City of London to East London and the entire length of the northern Thames Gateway area including Basildon, Chafford Hundred (for Lakeside), Tilbury and Southend. | http://www.c2c-online.co.uk/ | |
| C760 | | A: Austria | N: Narrow gauge railway | | Club 760 | | | |
| CAC | | USA: United States of America | R: Railway | | Cleveland, Akron & Columbus Railway | | | |
| CACC | | I: Italy | T: Type of car, lorry | | Cacciamali | | https://it.wikipedia.org/wiki/Cacciamali_(azienda) | |
| CAD | | USA: United States of America | R: Railway | | Cadiz Railroad | | | |
| CAEN | | F: France | C: City traffic | Caen | | | | |
| CAGY | | USA: United States of America | R: Railway | | Columbus and Greenville Railway | | | |
| CAIR | | CDN: Canada | F: Industry (manufacturer) | | Canadair Ltd. | | https://en.wikipedia.org/wiki/Canadair | |
| CAIRO | | ??? | C: City traffic | Cairo | | | | |
| CAL | | RC: Taiwan | A: Aviation | | China Airlines | | | |
| CALGARY | | USA: United States of America | C: City traffic | Calgary | | | | |
| CALMR | | CDN: Canada | R: Railway | | Calgary Municipial Railway | | | |
| CALT | CA | USA: United States of America | R: Railway | | The Chicago and Alton R.R. Co. | | | |
| CALX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | California Railcar Corp. | | | |
| CAM | | I: Italy | I: Industry (user) | | Cogne - Acquefredde, mining rail | | | |
| CAMPUS | | USA: United States of America | B: Bus | | Campus Coach | | | |
| CAMR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Cambrian Railways | | | |
| CANCL | | CDN: Canada | B: Bus | | Canada Coach Lines | | | |
| CANT | | D: Germany | R: Railway | | Cantus Verkehrsgesellschaft mbH | | | |
| CAO | | PRC: China | A: Aviation | | Air China Cargo | | | |
| CAPB | | RC: Taiwan | C: City traffic | Taipei | Capital Bus | | | |
| CAPC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Capital Coaches | | | |
| CAPR | | USA: United States of America | R: Railway | | Carolina Piedmont Division, South Carolina Central R.R. Co., Inc. | | | |
| CAPT | | EU: European Union | R: Railway | | CapTrain | | | |
| CAPTRAM | | ZA: South Africa | C: City traffic | Cape Town | Cape Tramways | | | |
| CAR | CA | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Cardiff Railway Company Ltd. | 1999: 138km standard gauge, not electrified | | |
| CARBON | | L: Luxembourg | B: Bus | | Georges Carbon | | | |
| CARD | | CDN: Canada | B: Bus | | Cardinal Coach Lines | | | |
| CARDP | | I: Italy | B: Bus | | Cardinale sas S.A.S. Noleggio Pullman Minibus Pescara | | | |
| CAREF | | USA: United States of America | TB: Tourist agency | | Carefree Bus Tours, NJ | | | |
| CAREY | | US-NY: USA, New York | B: Bus | New York | Carey Airport Express | | | |
| CASE | | USA: United States of America | T: Type of car, lorry | | | | | |
| CASO | | CDN: Canada | R: Railway | | Canada Southern Ry. | | | |
| CAT | | A: Austria | R: Railway | Wien | City Airport Train | | | |
| CATLV | | USA: United States of America | C: City traffic | Las Vegas | Citizens Area Transit | | | |
| CATP | | ??? | T: Type of car, lorry | | Caterpillar | | | |
| CAXX | | MEX: Mexico | I: Industry (user) | | Cemento Cruz Azul | | | |
| CB | | ??? | Z: Scale | | | | | |
| CBC | | USA: United States of America | B: Bus | | Command Bus Company | | | |
| CBCH | CB | D: Germany | R: Railway | | City-Bahn Chemnitz | | www.city-bahn.de/ | |
| CBD | | USA: United States of America | A: Aviation | | Lockheed Martin Aeronautics | | | |
| CBEK | D-CBB | CH: Switzerland | R: Railway | | Centralbahn AG. | Tochtergesellschaft des Eisenbahn-Kouriers | | |
| CBF | | PRC: China | A: Aviation | | China Northern Airlines | | https://en.wikipedia.org/wiki/China_Northern_Airlines | |
| CBG | | GUI: Guinea | I: Industry (user) | | Chemins de Fer de la Compagnie des Bauxites de Guinée | | | |
| CBNS | | CDN: Canada | R: Railway | | Cape Breton & Central Nova Scotia Railway | | | |
| CBOA | | USA: United States of America | O: Organisation | | Classic Bus Owners Assiciation | | | |
| CBQ | | USA: United States of America | R: Railway | | Chicago, Burlington & Quincy Railroad | | | |
| CBR | | EU: European Union | R: Railway | | CB Rail | | | |
| CBRW | | USA: United States of America | R: Railway | | Columbia Basin R.R. Co., Inc. | | | |
| CCA | | PRC: China | A: Aviation | | Air China | | | |
| CCAN | | CDN: Canada | B: Bus | | Coach Canada | | | |
| CCCSTL | NOR | USA: United States of America | R: Railway | | Cleveland, Cincinnati, Chicago and St. Louis Ry. (Cincinnati Northern R.R.) | | | |
| CCFR | | I: Italy | R: Railway | | Consorzio Cooperativo Ferrovie Reggiane | | | |
| CCKY | | USA: United States of America | R: Railway | | Chattooga & Chickamauga | | | |
| CCL | | D: Germany | R: Railway | | CC-Logistik GmbH | | | |
| CCLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Crystal Car Line, Inc. | | | |
| CCMBL | | US-CA: USA, California | C: City traffic | | Culver City Municipal Bus Lines | | | |
| CCMI | | PRK: North Korea | RS: State Railway | | The State Railway of the Democratic People's Republic of Korea | | https://en.wikipedia.org/wiki/Korean_State_Railway | |
| CCO | | USA: United States of America | R: Railway | | Clinchfield Railroad Co. | | | |
| CCP | | USA: United States of America | R: Railway | | Chicago Central & Pacific Railroad | | | |
| CCQG | | PRC: China | C: City traffic | | Changchun Rail Transit | | | |
| CCR | | USA: United States of America | R: Railway | | Corinth & Counce R.R. Co. | | | |
| CCT | | USA: United States of America | R: Railway | | Central California Traction | | | |
| CCWRO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Country Connect of Wrotham | | | |
| CD | | CZ: Czech Republic | R: Railway | | | | | |
| CDA | | E: Spain | R: Railway | | Central de Aragon | | | |
| CDAA | CDA | RCH: Chile | A: Aviation | | Aerocardal | | https://en.wikipedia.org/wiki/Aerocardal | |
| CDAC | | CDN: Canada | R: Railway | | Canadian American Railroad | | | |
| CDC | | CZ: Czech Republic | R: Railway | | CD Cargo | | | |
| CDLX | | USA: United States of America | R: Railway | | California Dispatch Line | | | |
| CDOT | | USA: United States of America | C: City traffic | | Connecticut Department of Transportation | | | |
| CDTA | | USA: United States of America | C: City traffic | Albany (NY) | Capital District Transportation Authority | | | |
| CDTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | California Department of Transportation (Caltrain) | | | |
| CEB | | RP: Philippines | A: Aviation | | Cebu Pacific Air | | | |
| CECR | | AUS: Australia | I: Industry (user) | | Centennial Coal Rail | | | |
| CEDAR | | USA: United States of America | C: City traffic | | Cedar Rapids Transit | | | |
| CEF | | CZ: Czech Republic | Y: Military | | Czech Air Force | | | |
| CEFX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Capital Equipment Financing | | | |
| CEG | | H: Hungary | N: Narrow gauge railway | | Cegléd | | | |
| CEI | | USA: United States of America | R: Railway | | Chicago & Eastern Illinois | | | |
| CEIBA | CEL | GQ: Equatorial Guinea | A: Aviation | | Ceiba Intercontinental | | https://en.wikipedia.org/wiki/CEIBA_Intercontinental | |
| CEL | | RL: Lebanon | R: Railway | | Chemin de fer de l'État Libanais | | https://en.wikipedia.org/wiki/Rail_transport_in_Lebanon | |
| CEMAT | | I: Italy | RO: Railway operator | | Mercitalia Intermodal SpA | | mercitaliaintermodal.it | |
| CEMES | | I: Italy | M: Industry (railway maintenance) | | CEMES | | www.cemes-spa.it | |
| CEMX | | MEX: Mexico | I: Industry (user) | | Cemex Mexico SA | former: Cementos Mexicanos, S.A. | | |
| CENB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Centrebus | | http://en.wikipedia.org/wiki/Centrebus | |
| CENC | | AUS: Australia | I: Industry (user) | | Centennial Coal Rail | | | |
| CENE | | I: Italy | M: Industry (railway maintenance) | | Cenedese S.p.A. | | | |
| CENT | CENTEX | USA: United States of America | R: Railway | | Centex | | | |
| CENTA | | USA: United States of America | B: Bus | | Central Avenue IBOA | | | |
| CENTRA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Centra | | http://en.wikipedia.org/wiki/Centra_%28bus_company%29 | |
| CER | | H: Hungary | RO: Railway operator | | Central-European Railway AG | | | |
| CES | CES, MU | PRC: China | A: Aviation | | China Eastern Airlines | | | |
| CESSNA | | US-KS: USA, Kansas | F: Industry (manufacturer) | | Cessna Aircraft Company | | https://en.wikipedia.org/wiki/Cessna | |
| CEV | | CH: Switzerland | R: Railway | | Chemins de fer électriques Veveysans / Vevey Electric Railway | | | |
| CFBA | BA | F: France | N: Narrow gauge railway | | Chemin de Fer du Blanc-Argent | | | |
| CFBS | | F: France | N: Narrow gauge railway | | Chemins de Fer de la Baie de Somme | | | |
| CFC | | F: France | N: Narrow gauge railway | | Chemins de Fer de la Corse (SNCF/CFC) | | | |
| CFCLA | | AUS: Australia | P: Pool (Leasing / wagon pool) | | Chicago Freight Car Leasing Australia | | | |
| CFCO | | RCB: Republic of the Congo | R: Railway | | Congo-Ocean Railway | | https://en.wikipedia.org/wiki/Congo%E2%80%93Ocean_Railway | |
| CFD | | F: France | N: Narrow gauge railway | | Compagnie de Chemins de Fer Departementaux | | | |
| CFE | | USA: United States of America | R: Railway | | Chicago, Ft. Wayne & Eastern | a Division of Central R.R. of Indianapolis, Inc. | | |
| CFHR | | F: France | V: Museum | | Chemin de Fer du Haut Rhone | | | |
| CFI | | RO: Romania | R: Railway | | S.C. Calea Ferata Ingusta SRL | | www.cfi.ro | |
| CFIT | CFI | I: Italy | R: Railway | | Compagnia Ferroviaria Italiana | | http://www.compagniaferroviariaitaliana.it/indexen_GB.php | |
| CFL | | L: Luxembourg | ??? | | Luxemburg | | | |
| CFLC | | L: Luxembourg | R: Railway | | CFL Cargo | | | |
| CFLD | CFL | DK: Denmark | R: Railway | | CFL cargo Danmark ApS | 2007 - | | |
| CFLIT | | I: Italy | RO: Railway operator | | C.F.L.SPA | | | |
| CFM | | MD: Moldova | R: Railway | | Caile Ferate Moldova | | | |
| CFNR | | USA: United States of America | R: Railway | | California Northern Railroad | | | |
| CFP | | CDN: Canada | I: Industry (user) | | Canadian Forest Products | | | |
| CFR | | RO: Romania | R: Railway | | Cãile Ferate Române | | www.cfr.ro/ | |
| CFRBF | | F: France | R: Railway | | Compagnie Ferroviaire Régionale de Bourgogne Franche-Comté | | | |
| CFRM | | RO: Romania | R: Railway | | CFR Marfa | | | |
| CFS | | SYR: Syria | R: Railway | | | | | |
| CFSE | | F: France | V: Museum | | Le Chemin de Fer de Saint-Eutrope | | http://jpmk.chez-alice.fr/Essonne1.htm | |
| CFSNE | | F: France | R: Railway | | CFS-NE | | | |
| CFTA | | F: France | R: Railway | | Société Génerale de Chemin de Fer et de Transports Automobiles | | www.cfta.fr/ | |
| CFWY | | USA: United States of America | S: Street transport company | | Consolidated Freightways | | | |
| CG | | USA: United States of America | R: Railway | | Central of Georgia Railway | | | |
| CGFTE | | F: France | C: City traffic | | Compagnie générale française des transports et entreprises | It managed public transportation networks in several French cities | https://en.wikipedia.org/wiki/Compagnie_g%C3%A9n%C3%A9rale_fran%C3%A7aise_des_transports_et_entreprises | |
| CGLI | | N: Norway | R: Railway | | Cargolink | | | |
| CGLX | | CDN: Canada | P: Pool (Leasing / wagon pool) | | GATX Rail Canada | | | |
| CGN | | N: Norway | R: Railway | | CargoNet AS | | | |
| CGNA | CGN, 2Z | PRC: China | A: Aviation | | Chang An Airlines | | | |
| CGR | | USA: United States of America | R: Railway | | Columbus & Greenville Railroad | | | |
| CGRX | | CDN: Canada | I: Industry (user) | | Consolidated Grain and Barge Co. | | | |
| CGT | | CDN: Canada | R: Railway | | The Canada and Gulf Terminal Ry. Co. | | | |
| CGW | | USA: United States of America | R: Railway | | Chicago Great Western | | | |
| CH | | CH: Switzerland | R: Railway | | Other railway vehicles | | | |
| CHA | | CH: Switzerland | Y: Military | | Swiss army | | | |
| CHAB | | SU: Sovietunion | C: City traffic | Chabarovsk | | | | |
| CHAND | | RCH: Chile | R: Railway | | Chilean Transandine | | https://en.wikipedia.org/wiki/Transandine_Railway | |
| CHANG | | PRC: China | C: City traffic | | Changchun Subway | | | |
| CHARLB | | CDN: Canada | B: Bus | | Charlesbourg Bus Company | | | |
| CHART | | CDN: Canada | B: Bus | | Charterways Transportation | | | |
| CHAT | | CDN: Canada | B: Bus | | Chatham Transit (Ontario) | | | |
| CHAX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Chartrand's Tank Car Service, Inc. | | | |
| CHD | | USA: United States of America | R: Railway | | Cincinnati, Hamilton & Dayton RR | | | |
| CHE | CO | USA: United States of America | R: Railway | | Chessie System: Chesapeake & Ohio | | | |
| CHELY | | RUS: Russia | C: City traffic | Chelyabinsk | | | | |
| CHEM | | D: Germany | I: Industry (user) | | Chemion Logistik GmbH | | | |
| CHEMNITZ | | D: Germany | O: Organisation | | Stadt Chemnitz | | | |
| CHEMUNG | | UAE: United Arab Emirates | C: City traffic | | Chemung County Transit | | | |
| CHEST | | USA: United States of America | B: Bus | | Chestnut Hill | | | |
| CHEV | | USA: United States of America | T: Type of car, lorry | | Chevrolet | | | |
| CHEVY | | USA: United States of America | T: Type of car, lorry | | Chevrolet | | | |
| CHI | | J: Japan | R: Railway | | Chichibu Railway | | | |
| CHICAGO | | USA: United States of America | C: City traffic | Chicago | | | | |
| CHICHIBU | | J: Japan | R: Railway | | | | | |
| CHIHNAN | | RC: Taiwan | B: Bus | Taipei | Chihnan Bus Company, Ltd | | | |
| CHIL | CR | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Chiltern Railways Ltd. | 1999: 269km standard gauge, not electrified Chiltern Railways is a train operating company in England. It was formed by the privatisation of British Rail in 1996 and it operates train mainline services from Marylebone station in London, to Aylesbury and Birmingham Snow Hill. Initially the line was franchised to a company formed by the British Rail managers of the route, but since 2003 has been a wholly owned subsidiary of Laing Rail, who owned a much smaller shareholding at privatisation. In 2002 a new 20 year franchise began which promises significant investment in the route. | http://www.chilternrailways.co.uk/ | |
| CHITOSE | | J: Japan | B: Bus | | Chitose Sougo Kanko Bus | | http://www.chitose-bus.co.jp/ | |
| CHJ | | S: Sweden | R: Railway | | Kristianstad - Hässleholm Järnvägar | 1863 - 1944 | | |
| CHMF | | USA: United States of America | S: Street transport company | | Challenger Motor Freight | | | |
| CHMUS | | D: Germany | V: Museum | | Strassenbahnmuseum Chemnitz | | https://www.strassenbahn-chemnitz.de/ | |
| CHO | | J: Japan | R: Railway | | Choshi Railway | | | |
| CHOC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | The Chocolate Express Bus Company | | | |
| CHOD | | PL: Poland | B: Bus | | MZK Chodziedż | | | |
| CHP | | MEX: Mexico | R: Railway | | Ferrocarril del Chihuahua Al Pacifico, S.A. | | | |
| CHSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Cenex Harvest States Cooperative | | | |
| CHTSTU | | UA: Ukraine | C: City traffic | Chernivtsi | Chernivtsi Trolleybus Managemen | | | |
| CHTT | | USA: United States of America | R: Railway | | Chicago Heights Transfer Terminal | | | |
| CHUR | | CH: Switzerland | C: City traffic | Chur | Stadtbus Chur AG, 2018- Chur Bus | Eigentümer: Bus und Service AG | https://de.wikipedia.org/wiki/Chur_Bus | |
| CHVX | | USA: United States of America | I: Industry (user) | | Chevron Chemical | | | |
| CHW | | USA: United States of America | R: Railway | | Chesapeake Western Ry. | | | |
| CHWE | | USA: United States of America | R: Railway | | Chehalis Western | | | |
| CI | | USA: United States of America | R: Railway | | Cambria and Indiana R.R. Co. | | | |
| CIL | | USA: United States of America | R: Railway | | Chicago, Indianapolis & Louisville Ry. Co. (Monon R.R.) | | | |
| CIM | | USA: United States of America | R: Railway | | Chicago & Illinois Midland Ry. Co. | | | |
| CIRR | | USA: United States of America | R: Railway | | Chattahoochee Industrial Railroad | | | |
| CIT | | ??? | T: Type of car, lorry | | Citroen | | | |
| CITC | | DK: Denmark | C: City traffic | Copenhagen | City-Trafik | | | |
| CITEV | | F: France | TU: Touristic railway | | Compagnie Internationale des Trains Express a Vapeur | | trainavapeur.com | |
| CITR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Cityrama | | | |
| CITX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | The CIT Group/Capital Finance, Inc. | | | |
| CITYTR | | DK: Denmark | C: City traffic | | City-Trafik A/S, Copenhagen | | | |
| CIW | | USA: United States of America | R: Railway | | Chicago & Illinois Western | | | |
| CIWL | | X: Global | ??? | | Compagnie International de Wagon Lits | | | |
| CJ | | CH: Switzerland | R: Railway | | Chemins de Fer du Jura | | | |
| CJA | CJA, C6 | CDN: Canada | A: Aviation | | CanJet | | | |
| CJC | | USA: United States of America | A: Aviation | | Colgan Air | | https://en.wikipedia.org/wiki/Colgan_Air | |
| CKD | | CZ: Czech Republic | F: Industry (manufacturer) | | CKD Praha | | | |
| CKK | | PRC: China | A: Aviation | | China Cargo Airlines | | | |
| CKRY | | USA: United States of America | R: Railway | | Central Kansas Ry., Inc. | | | |
| CLA | | PL: Poland | C: City traffic | Chelm | Chełmskie Linie Autobusowe Spółka z o.o. | | https://www.cla.net.pl/ | |
| CLASB | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Classic Bus Hire | | | |
| CLASC | | CDN: Canada | B: Bus | | Classic Charter (Ludwig & Son) | | | |
| CLAT | | US-NJ: USA, New Jersey | B: Bus | | Classic Tours | | | |
| CLC | | USA: United States of America | R: Railway | | Columbia and Cowlitz | | | |
| CLCO | | USA: United States of America | B: Bus | | Classi Coach | | | |
| CLE | C&LE | USA: United States of America | R: Railway | | The Cincinnati and Lake Erie Railroad | | http://en.wikipedia.org/wiki/Cincinnati_and_Lake_Erie_Railroad | |
| CLEF | SMTC | F: France | C: City traffic | | Tramway de Clermont-Ferrand | | https://en.wikipedia.org/wiki/Clermont-Ferrand_tramway | |
| CLET | | CS: Czechslowakia | Y: Military | | Československé letectvo | | | |
| CLF | | I: Italy | M: Industry (railway maintenance) | | Cooperativa Linee Ferroviari | | www.clfspa.it | |
| CLIN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Countryliner | | http://en.wikipedia.org/wiki/Countryliner_Coaches | |
| CLOC | | CDN: Canada | F: Industry (manufacturer) | | Canadian Locomotive Company | | | |
| CLOG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Capital Logistics | | | |
| CLP | | USA: United States of America | R: Railway | | The Clarendon and Pittsford R.R. Co. | | | |
| CLR | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | Central London Railway | Tube | | |
| CLRS | CLR | D: Germany | R: Railway | | Cargo Logistic Rail Service (CLR) | | | |
| CLSF | | RO: Romania | R: Railway | | Classfer S.R.L | | | |
| CLUB | | USA: United States of America | B: Bus | | Club Transportation | | | |
| CLUJ | | RO: Romania | C: City traffic | Cluj | Compania de Transport Public | | | |
| CLYD | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Clydesie Scottish Omnibus Ltd. | | | |
| CMAYL | | USA: United States of America | C: City traffic | | Cape May-Lewes Ferry | | | |
| CMB | | HK: Hong Kong | C: City traffic | | China Motor Bus | | | |
| CMBL | | US-CA: USA, California | C: City traffic | Commerce | City of Commerce Municipal Bus Lines | | | |
| CMC | | USA: United States of America | R: Railway | | CMC Railroad Inc. | | | |
| CMCX | | USA: United States of America | I: Industry (user) | | Cuban Molasses Co. | | | |
| CMGN | | USA: United States of America | R: Railway | | Central Michigan Ry. Co. | | | |
| CMI | | B: Belgium | F: Industry (manufacturer) | | Cockerill Maintenance & Ingénierie | | | |
| CMLR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Campbeltown and Macrihanish Light Railway | The Campbeltown and Macrihanish Light Railway was a 2' 3\" gauge line at the end of the Mull of Kintyre in Scotland. It had its origins as a coal carrier from the pits at Drumlemble to the quays at Campbeltown, but during the era of the Clyde steamers, Campbeltown became a very popular destination for day trippers and the railway capitalised on this by extending itself to Macrihanish offering access to the Atlantic Ocean and the local golf links! Its final length was about 6 miles. The line originally opened for coal traffic in 1877, and for passenger traffic through to Macrihanish in 1906. It then led a relatively prosperous life until after the first world war, but succumbed to the inevitable road transport, closure of the pits and changing holiday patterns in 1931. It was independent throughout its existence. The railway was interesting in that its coaches were enormous for such a small gauge, and that the early coal trains consisted of 2ft 3in gauge transporter wagons carrying 4 small colliery wagons known as "hutches", transversely. | | |
| CMN | | CH: Switzerland | R: Railway | | Chemins de fer des Montagnes Neuchâteloises | | | |
| CMNW | | USA: United States of America | R: Railway | | Chicago, Missouri and Western Ry. Co. | | | |
| CMO | | USA: United States of America | R: Railway | | Chicago, St. Paul, Minneapolis & Omaha Ry. Co. | | | |
| CMQ | | CDN: Canada | R: Railway | | Central Maine and Quebec Railwa | | | |
| CMSL | | USA: United States of America | R: Railway | | Cape May Seashore Lines | | | |
| CMST | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Central Scottish Motor Traction | | https://en.wikipedia.org/wiki/Central_Scottish | |
| CMSTP | | USA: United States of America | R: Railway | | Chicage Milwaukee St.Paul & Pacific | | | |
| CMTP | | BR: Brazil | C: City traffic | Teresina | Metropolitan Public Transport Company | | | |
| CMTY | | USA: United States of America | RO: Railway operator | Austin | Herzog Transit Services | | | |
| CN | CNR | CDN: Canada | R: Railway | | Canadian National Railway | | www.cn.ca | |
| CNB | | NL: Netherlands | B: Bus | | | | | |
| CNCF | | FAN: Fantasy | R: Railway | | CNCF | | | |
| CNCX | | NL: Netherlands | B: Bus | | CN + CX | | | |
| CNJ | | USA: United States of America | R: Railway | | Central Railroad Company of New Jersey | | | |
| CNLA | CNL | USA: United States of America | R: Railway | | Columbia, Newberry and Laurens R.R. Co. | | | |
| CNNF | CNR | CDN: Canada | N: Narrow gauge railway | | Canadian National/Newfoundland Railway | | | |
| CNNZ | | NL: Netherlands | B: Bus | | CN + NZ | | | |
| CNOR | NOR | USA: United States of America | R: Railway | | Cincinnati Northern Railway | | | |
| CNSM | CNS&M | USA: United States of America | C: City traffic | | Chicago North Shore & Milwaukee | | | |
| CNTD | | CDN: Canada | B: Bus | | City of Nelson Transit Department | | | |
| CNTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Continental Tank Car Corp. | | | |
| CNUR | | USA: United States of America | R: Railway | | C&NC Railroad | | | |
| CNW | | USA: United States of America | R: Railway | | Chicago & North Western | | | |
| CNWS | | USA: United States of America | R: Railway | | Carolina & Northwestern R.R., Inc. | | | |
| CNWX | | CDN: Canada | O: Organisation | | Canadian Wheat Board | | | |
| CNX | | D: Germany | R: Railway | | Connex | | | |
| CNXB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Connex bus UK | | http://en.wikipedia.org/wiki/Connex_bus | |
| CNXDK | | DK: Denmark | B: Bus | | Connex Denmark | | | |
| CNXW | | PL: Poland | B: Bus | | Connex Warsawa | | | |
| CO | | USA: United States of America | R: Railway | | Chesapeake & Ohio | | | |
| COA | | USA: United States of America | A: Aviation | | Continental Airlines | | | |
| COAC | | US-NJ: USA, New Jersey | B: Bus | | Coast Cities | | | |
| COASTER | | USA: United States of America | R: Railway | | Coaster | | | |
| COBC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | County Bus and Coach | London Country North East was bought by AJS and Parkdale in April 1988, then divided into two chunks in January 1989. County Bus and Coach was at Hertford, Harlow and Grays. | | |
| COER | | USA: United States of America | V: Museum | | Crab Orchard & Egyptian R.R. | | | |
| COGI | | F: France | M: Industry (railway maintenance) | | Cogifer | | http://www.vossloh-cogifer.com/en/home/home.html | |
| COLA | | X: Global | O: Organisation | | Coca Cola | | | |
| COLAS | | GB: United Kingdom of Great Britain and Northern Ireland | M: Industry (railway maintenance) | | Colas Rail Ltd. | | | |
| COLC | | USA: United States of America | C: City traffic | Morristown, NJ | Colonial Coach | | | |
| COM | | USA: United States of America | A: Aviation | | Comair | Subsidiary of Delta Airlines | https://en.wikipedia.org/wiki/Comair | |
| COMCOACH | | USA: United States of America | B: Bus | | Community Coach | | | |
| COMMUNITY | | US-NJ: USA, New Jersey | B: Bus | | Community Bus Lines | | | |
| COMSA | | E: Spain | ??? | | | | | |
| COMTRANSIT | | USA: United States of America | B: Bus | | Community Transit | | | |
| CON | | USA: United States of America | R: Railway | | | | | |
| COND | CFG | D: Germany | A: Aviation | | Condor Flugdienst GmbH | | https://en.wikipedia.org/wiki/Condor_(airline) | |
| CONF | | ??? | ??? | | | | | |
| CONS | RATC | RO: Romania | C: City traffic | Constanta | Regia Autonoma de Transport in Constanta | | | |
| CONT | | ??? | A: Aviation | | Continental | | | |
| CONTEC | | DK: Denmark | R: Railway | | Contec Rail ApS | 2007 | | |
| CONTI | | E: Spain | R: Railway | | Continental Rail | | | |
| COORS | | USA: United States of America | I: Industry (user) | | Coors Brewery | | | |
| COOT | | AUS: Australia | R: Railway | | Coote Industrial | | | |
| COP | | USA: United States of America | R: Railway | | City of Prineville | | | |
| COPEF | | F: France | O: Organisation | | Cercle Ouest Parisien d'Etudes Ferroviaires | | | |
| COPR | | USA: United States of America | R: Railway | | Copper Range R.R. Co. | | | |
| CORAM | | USA: United States of America | B: Bus | | Coram Bus Service | | | |
| CORP | | USA: United States of America | R: Railway | | Central Oregon & Pacific R.R., Inc | | | |
| CORT | | I: Italy | B: Bus | | Servizi Ampezzo srl | | | |
| CORX | | USA: United States of America | I: Industry (user) | | Coors Brewing Co. | | | |
| COSF | | I: Italy | M: Industry (railway maintenance) | | Costaferroviaria | | | |
| COSFER | | I: Italy | M: Industry (railway maintenance) | | Cosfer Spa | | | |
| COSTI | | I: Italy | I: Industry (user) | | Costiero Gas | | | |
| COSX | | USA: United States of America | I: Industry (user) | | Cosden & Co. Mid-Continent Petroleum Company | | | |
| COT | | D: Germany | C: City traffic | Cottbus | | | | |
| COTA | | USA: United States of America | C: City traffic | | Central Ohio Transit Authority | | | |
| COTR | | F: France | C: City traffic | Angers | Compagnie des transports angevins | | https://fr.wikipedia.org/wiki/Transports_en_commun_angevins#Contrat | |
| COTRA | | NL: Netherlands | L: Logistics company | | Cotra Logistics Solutions BV | | | |
| COTS | CR | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Cotswold Rail | Cotswold Rail is a spot-hire company of shunting and mainline locomotives, based in Moreton-in-Marsh, Gloucestershire. | http://www.cotswoldrail.co.uk/ | |
| CP | | P: Portugal | R: Railway | | Comboios de Portugal | | www.cp.pt/ | |
| CPA | | HK: Hong Kong | A: Aviation | | Cathay Pacific | | | |
| CPB | CP | BR: Brazil | R: Railway | | Companhia Paulista de Estradas de Ferro / S?o Paulo Railway Company | | | |
| CPDR | | USA: United States of America | R: Railway | | Carolina Piedmont Division, South Carolina Central R.R. Co., Inc. | | | |
| CPE | | ??? | Z: Scale | | Chris Pedersen for TrainPlayer | | | |
| CPPK | | RUS: Russia | RO: Railway operator | | Central Suburban Passenger Company | | https://en.wikipedia.org/wiki/Central_Suburban_Passenger_Company | |
| CPR | CP | CDN: Canada | R: Railway | | Canadian Pacific Railway | | | |
| CPRR | | USA: United States of America | R: Railway | | Central Pacific Railroad | | | |
| CPSU | | CDN: Canada | SH: Shipping company | | Canadian Pacific Steamships | The ships were british flagged. | | |
| CPTC | | CDN: Canada | C: City traffic | | Canadian Pacific Transport Company | | | |
| CPTM | | BR: Brazil | R: Railway | São Paulo | Companhia Paulista de Trens Metropolitanos | | | |
| CPTRO | | RO: Romania | R: Railway | | Captrain Romania | | | |
| CPWX | | CDN: Canada | P: Pool (Leasing / wagon pool) | | Canadian Wheat Board | | | |
| CR | | USA: United States of America | R: Railway | | Consolidated Rail Corporation (Conrail) | | | |
| CRDX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Chicago Freight Car Leasing Co. | | | |
| CREX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Consolidated Railway Equipment (Citicorp Railmark) | | | |
| CRF | | J: Japan | A: Aviation | | Air Central | | | |
| CRFJ | | USA: United States of America | S: Street transport company | | J. S. Crawford & Son Ltd. | | | |
| CRFS | | I: Italy | M: Industry (railway maintenance) | | Costruzione Raccordi Ferroviari S.coop | | | |
| CRGX | | USA: United States of America | I: Industry (user) | | Cargill, Inc | | | |
| CRGXL | | USA: United States of America | I: Industry (user) | | Cargill Inc. | | | |
| CRI | | USA: United States of America | R: Railway | | Chicago River & Indiana | | | |
| CRIP | | USA: United States of America | R: Railway | | Chicago, Rock Island & Pacific Railroad | | | |
| CRIX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Citicorp Railmark, Inc. | | | |
| CRLE | | USA: United States of America | R: Railway | | Coe Rail Inc. | | | |
| CRLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Conrail Leasing | | | |
| CRMX | | USA: United States of America | F: Industry (manufacturer) | | Colorado Railcar Manufacturing, LLC | | | |
| CROS | CROSS | CH: Switzerland | R: Railway | | Crossrail AG | | http://www.crossrail.ch | |
| CROSV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Crosville Motor Services | | https://en.wikipedia.org/wiki/Crosville_Motor_Services | |
| CROYDON | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Croydon | | | | |
| CRP | | PL: Poland | RO: Railway operator | | Colas Rail Polska sp.z.o.o | | | |
| CRR | | USA: United States of America | R: Railway | | Clinchfield R.R. Co. | | | |
| CRRX | | USA: United States of America | R: Railway | | Canon City & Royal Gorge R.R. LLC | | | |
| CRT | | PRC: China | C: City traffic | | Chongquing Rail Trainsit | | | |
| CRWF | | AUS: Australia | R: Railway | | Crawfords Freightlines | | | |
| CRWX | | USA: United States of America | I: Industry (user) | | Capitol Refining Co. | | | |
| CRX | | CH: Switzerland | A: Aviation | | Crossair | | https://en.wikipedia.org/wiki/Crossair | |
| CRYS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Crystals coaches | | | |
| CRYYP | | MEX: Mexico | R: Railway | | Cananea, Río Yaqui y Pacifico | | | |
| CS | | USA: United States of America | R: Railway | | The Colorado and Southern Ry. Co. | | | |
| CSA | | CS: Czechslowakia | A: Aviation | | Ceskoslovenske Aerolinie | | | |
| CSAD | | CS: Czechslowakia | B: Bus | | | | | |
| CSD | | CS: Czechslowakia | R: Railway | | | | https://en.wikipedia.org/wiki/Czechoslovak_Air_Force | |
| CSE | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Connex South Eastern Ltd. | 1999: 770km standard gauge, electrified at 750V= 3rd rail | | |
| CSERV | | A: Austria | I: Industry (user) | | Cargo-Serv | | | |
| CSH | | PRC: China | A: Aviation | | Shanghai Airlines | | | |
| CSHAV | | CZ: Czech Republic | B: Bus | | ČSAD Havířov | | | |
| CSL | | USA: United States of America | C: City traffic | | Chicago Surface Lines | | | |
| CSLMV | | CS: Czechslowakia | O: Organisation | | Letecky Oddíl Ministerstva Vnitra | | | |
| CSLR | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | City&South London Railway | Tube | | |
| CSMX | | USA: United States of America | ??? | | Carol and Andy Muller | | | |
| CSN | | PRC: China | A: Aviation | | China Southern Airlines | | | |
| CSO | | USA: United States of America | R: Railway | | Connecticut Southern Railroad | | | |
| CSOM | CAEV | H: Hungary | N: Narrow gauge railway | | Csömödér | | | |
| CSPA | | CS: Czechslowakia | Y: Military | | Czechoslovak People's Army | | | |
| CSRX | | USA: United States of America | R: Railway | | Conway Scenic Railroad | | | |
| CSS | | USA: United States of America | R: Railway | | Chicago South Shore & South Bend Railroad | | | |
| CSSA | CSS | PRC: China | A: Aviation | | SF Airlines | | https://en.wikipedia.org/wiki/SF_Airlines | |
| CSSDL | | CS: Czechslowakia | O: Organisation | | Cesloslovenská Správa Dopravních Letist | | | |
| CSTLP | | USA: United States of America | R: Railway | | Chicago, St. Louis & Pittsburgh Railroad | | | |
| CSTP | | I: Italy | B: Bus | Salerno | Consorzio Salernitano Trasporti Pubblici | | https://it.wikipedia.org/wiki/Busitalia_Campania | |
| CSX | CSXT | USA: United States of America | R: Railway | | CSX Corporation | | www.csx.com | |
| CSYX | | USA: United States of America | I: Industry (user) | | Central Soya Co., Inc. | | | |
| CSZ | | PRC: China | A: Aviation | | Shenzen Airlines | | | |
| CT | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Central Trains Ltd. | 1999: standard gauge, electrified at 25kV 50Hz | | |
| CTA | | USA: United States of America | C: City traffic | | Chicago Transit Authority | | | |
| CTCUM | | CDN: Canada | C: City traffic | | Montreal Urban Community Transit Commission | | | |
| CTES | | CZ: Czech Republic | C: City traffic | Cesky Tesin | | | | |
| CTF | | RO: Romania | R: Railway | | Compania Transport Feroviar | | | |
| CTI | | I: Italy | RO: Railway operator | | CAPTRAIN Italia | | | |
| CTIN | | RO: Romania | R: Railway | | Constantin Grup | | | |
| CTL | | PL: Poland | R: Railway | | | | | |
| CTM | | CDN: Canada | C: City traffic | Montréal | Commission de transport de Montréal | 1951-06-16 - 1969-12-31 | | |
| CTMC | | I: Italy | C: City traffic | Cagliari | Consorzio Trasporti e Mobilita S.p.A., Cagliari | | | |
| CTP | | I: Italy | ??? | | | | | |
| CTPM | | F: France | C: City traffic | Montbéliard | évolitY | | | |
| CTR | | CDN: Canada | C: City traffic | | Calgary Transit | | | |
| CTRB | | F: France | C: City traffic | Belfort | | | | |
| CTRN | | USA: United States of America | R: Railway | | Central of Tennessee Ry. & Navigation Co. | | | |
| CTS | | F: France | C: City traffic | Strassbourg | | | | |
| CTSC | CTS | CDN: Canada | C: City traffic | | Calgary Transit System | | | |
| CTSR | C&TS | USA: United States of America | N: Narrow gauge railway | | Cumbres and Toltec Scenic Railroad | | | |
| CTT | | USA: United States of America | B: Bus | | Connecticut Transit (CT Transit) | | | |
| CTTL | | I: Italy | C: City traffic | | CTT Livorno | | | |
| CTV | | RO: Romania | R: Railway | | CargoTransVagon | | | |
| CUB | | C: Cuba | A: Aviation | | Cubana de Aviacion | | | |
| CUBAB | | C: Cuba | B: Bus | | | | | |
| CUBAC | | C: Cuba | C: City traffic | | | | | |
| CUK | | J: Japan | A: Aviation | | New Central Airservice | | https://en.wikipedia.org/wiki/New_Central_Airservice | |
| CULT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Culturebus | | | |
| CUNARD | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | Cunard Line | | | |
| CUSA | | USA: United States of America | B: Bus | | Coach USA | | | |
| CV | | USA: United States of America | R: Railway | | Central Vermont | | | |
| CVAG | | D: Germany | C: City traffic | Chemnitz | Chemnitzer Verkehrs AG | | | |
| CVAN | | CH: Switzerland | M: Industry (railway maintenance) | | C. Vanoli | | | |
| CVC | | FAN: Fantasy | X: Phantasy | | Claude Circus | | | |
| CVDO | | USA: United States of America | R: Railway | | Chicago, Central & Pacific | | | |
| CVE | | I: Italy | R: Railway | | Circumvesuviana | | | |
| CVGFO | | YV: Venezuela | I: Industry (user) | | CVG Ferrominera Orinoco C.A. | | www.ferrominera.com | |
| CVIR | | CH: Switzerland | I: Industry (user) | | Ciment Vigier | | | |
| CVR | | USA: United States of America | R: Railway | | Cimarron Valley R.R. L.C. | | | |
| CVRR | | USA: United States of America | R: Railway | | Cumberland Valley Railroad | | | |
| CVSX | | USA: United States of America | TU: Touristic railway | | Cuyahoga Valley Scenic Railway | | | |
| CVT | | US-NJ: USA, New Jersey | B: Bus | | CV Transport Inc. | | http://www.cvtransportonline.com/about-us/ | |
| CW | | USA: United States of America | R: Railway | | Colorado & Wyoming Ry. Co. | | | |
| CWAG | | EU: European Union | P: Pool (Leasing / wagon pool) | | Cargowaggon | | | |
| CWC | | USA: United States of America | R: Railway | | Charleston & Western Carolina R.R. | | | |
| CWCA | CWC | USA: United States of America | A: Aviation | | Centurion Air Cargo | | https://en.wikipedia.org/wiki/Centurion_Air_Cargo | |
| CWEX | | USA: United States of America | I: Industry (user) | | Commonwealth Edison Co. | | | |
| CWLB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | CentreWest London Buses | Subsidiary of First | | |
| CWR | | AUS: Australia | R: Railway | | Commonwealth Railways | | | |
| CWRR | CWR | USA: United States of America | R: Railway | | California Western R.R., Inc. | | | |
| CX | CXX | NL: Netherlands | ??? | | Connexxion | | www.connexxion.nl/ | |
| CXH | CXH, XW | PRC: China | A: Aviation | | China Xinhua Airlines | | | |
| CXI | CXI, 8C | PRC: China | A: Aviation | | Shan Xi Airlines | | | |
| CYMX | | USA: United States of America | I: Industry (user) | | Cumberland Mine Railroad | | | |
| CYRIDE | | USA: United States of America | C: City traffic | | CyRide | | https://en.wikipedia.org/wiki/CyRide | |
| CYXX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Conrad Yelvington Distributors, Inc. | | | |
| CZA | | CZ: Czech Republic | Y: Military | | Czech Army | | | |
| CZAWDAR | | BG: Bulgaria | T: Type of car, lorry | | Czawdar | | | |
| CZCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Crown Zellerbach Corp. | | | |
| CZDZ | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Miejskiej w Czechowicach-Dziedzicach sp. z o.o. | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| CZEN | | PL: Poland | C: City traffic | Czestochowa | Miejskie Przedsiębiorstwo Komunikacyjne w Częstochowie | From 1991 for a short time the company's name was Miejski Zakład Komunikacji, also MZK | | |
| CZL | | CZ: Czech Republic | F: Industry (manufacturer) | | CZ LOKO a.s. | | czloko.cz | |
| D | | D: Germany | C: City traffic | Düsseldorf | Rheinbahn AG | | | |
| DA | | CDN: Canada | R: Railway | | Dominion Atlantic Ry. Co. | | | |
| DAAG | | D: Germany | T: Type of car, lorry | | Deutsche Lastautomobilfabrik AG | | | |
| DAB | | DK: Denmark | T: Type of car, lorry | | Dansk Automobil Byggeri A/S | | https://en.wikipedia.org/wiki/Danish_Automobile_Building | |
| DAF | | ??? | F: Industry (manufacturer) | | | | | |
| DAHER | NCS | D: Germany | L: Logistics company | | Daher Projects GmbH | | daher.com | |
| DAHM | | D: Germany | B: Bus | Dahmetal | | | | |
| DAIH | | ROK: Korea | T: Type of car, lorry | | Daihatsu | | | |
| DAIR | | USA: United States of America | R: Railway | | Dakota & Iowa Railroad Co. | | | |
| DAK | | J: Japan | A: Aviation | | First Flying | | | |
| DAKR | | USA: United States of America | R: Railway | | Dakota Rail | | | |
| DAKX | | MEX: Mexico | I: Industry (user) | | DAK Americas LLC | | | |
| DAL | DAL, DL | USA: United States of America | A: Aviation | | Delta Air Line | | | |
| DALIAN | | PRC: China | C: City traffic | | Dalian Metro | | https://en.wikipedia.org/wiki/Dalian_Metro | |
| DALM | | I: Italy | I: Industry (user) | | Acciaierie Dalmine | | | |
| DALMINE | | I: Italy | I: Industry (user) | | Dalmine Steel Works | | | |
| DANAN | | RC: Taiwan | C: City traffic | Taipei | Da-Nan Bus | | | |
| DANUB | | RO: Romania | RO: Railway operator | | Logistic Services Danubius | since 2011 DB Schenker Rail Romania | | |
| DAPL | | D: Germany | V: Museum | | Dampf-Plus GmbH | | http://www.dampf-plus.de/ | |
| DARD | | D: Germany | B: Bus | | Dardenne Reisen | | https://www.dardenne-reisen.de/ | |
| DARJ | | IND: India | N: Narrow gauge railway | | Darjeeling Himalayan Railway | | | |
| DARKANU | | US-NJ: USA, New Jersey | B: Bus | | Darkanu Bus Corporation | | | |
| DART | | US-TX: USA, Texas | C: City traffic | Dallas | Dallas Area Rapid Transit | | | |
| DARTFS | | USA: United States of America | B: Bus | | DART First State (Delaware Transit Corporation) | | | |
| DAUGS | | LV: Latvia | C: City traffic | Daugavpils | Daugavpils Satiksme | | https://en.wikipedia.org/wiki/Daugavpils_Satiksme | |
| DB | | D: Germany | R: Railway | | Deutsche Bundesbahn | | | |
| DBAG | | D: Germany | R: Railway | | Deutsche Bahn AG. | | | |
| DBB | | D: Germany | M: Industry (railway maintenance) | | DB Bahnbau | | | |
| DBC | | D: Germany | R: Railway | | DB Cargo | | | |
| DBCI | | I: Italy | R: Railway | | DB Cargo Italia | | | |
| DBCR | | RO: Romania | R: Railway | | Deutsche Bahn Cargo Romania S.R.L. | | | |
| DBG | | D: Germany | M: Industry (railway maintenance) | | DB Gleisbau | | | |
| DBGZ | | D: Germany | P: Pool (Leasing / wagon pool) | | DB Gebrauchtzug | | | |
| DBJ | | DK: Denmark | R: Railway | | De Bornholmske Jernbaner | 1935 - 1968 | | |
| DBM | | D: Germany | Y: Military | | Deutsche Bundesmarine | | | |
| DBMUS | | D: Germany | V: Museum | | DB Museum | | | |
| DBN | | D: Germany | M: Industry (railway maintenance) | | DB Netz | | | |
| DBP | | D: Germany | O: Organisation | | Deutsche Bundespost | | | |
| DBRBM | | D: Germany | B: Bus | | DB Regio Bus Mitte | | https://de.wikipedia.org/wiki/DB_Regio_Bus_Mitte | |
| DBRI | | CDN: Canada | R: Railway | | Dominion Bridge | | | |
| DBS | | EU: European Union | R: Railway | | DB Schenker Rail | | | |
| DBT | | USA: United States of America | R: Railway | Stockton, CA | Delta Bulk Terminal | | | |
| DBUS | | E: Spain | C: City traffic | San Sebastian | Companía del Tranvía | | | |
| DBX | | US-CA: USA, California | B: Bus | | Dumbarton Express | | | |
| DCLR | | USA: United States of America | R: Railway | | Delaware Coast Line Railroad | | | |
| DCR | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Devon & Cornwall Railways Limited | | https://en.wikipedia.org/wiki/DCRail | |
| DCTR | | USA: United States of America | C: City traffic | Washington D.C. | DC Transit | | | |
| DD | | D: Germany | R: Railway | | D&D Eisenbahngesellschaft mbH | | www.dud-eisenbahn.de/ | |
| DDOT | | USA: United States of America | C: City traffic | Detroit | Detroit Department of Transportation | | https://en.wikipedia.org/wiki/Detroit_Department_of_Transportation | |
| DE | | D: Germany | R: Railway | | Dortmunder Eisenbahn | | | |
| DEAG | | D: Germany | C: City traffic | Düren | Dürener Eisenbahn AG | | https://de.wikipedia.org/wiki/D%C3%BCrener_Eisenbahn | |
| DEB | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | Debonair | | https://en.wikipedia.org/wiki/Debonair_(airline) | |
| DECAMP | | USA: United States of America | B: Bus | | Decamp Bus Lines | | | |
| DEEX | | USA: United States of America | R: Railway | | The Detroit Edison Co. | | | |
| DEHE | | F: France | M: Industry (railway maintenance) | | Dehé | | | |
| DELBUS | | D: Germany | B: Bus | | Delbus GmbH & Co. KG | | https://de.wikipedia.org/wiki/Delbus | |
| DELIJN | | B: Belgium | C: City traffic | | | | | |
| DELTAK | | BG: Bulgaria | B: Bus | | Deltakar | | | |
| DEMY | | L: Luxembourg | B: Bus | | Demy Schandeler | | | |
| DES | | D: Germany | C: City traffic | Dessau | | | | |
| DEV | | D: Germany | R: Railway | | Deutscher Eisenbahn-Verein | | | |
| DEVG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Devon General Omnibus and Touring Company | | | |
| DFB | | CH: Switzerland | R: Railway | | | | | |
| DFG | | I: Italy | R: Railway | | Del Fungo-Giera Servizi Ferroviari SpA | | www.delfungogiera.com/ | |
| DG | | F: France | M: Industry (railway maintenance) | | Desquenne & Giral | | | |
| DGEG | | D: Germany | V: Museum | | Eisenbahnmuseum Bochum-Dahlhausen | | | |
| DGMT | | D: Germany | M: Industry (railway maintenance) | | Deutsche Gleisbau und Material GmbH | | | |
| DGNO | | USA: United States of America | R: Railway | | Dallas, Garland & Northeastern R.R., Inc. | | | |
| DGT | | D: Germany | M: Industry (railway maintenance) | | Deutsche Gleis und Tiefbau | | | |
| DH | | USA: United States of America | R: Railway | | Delaware and Hudson Railroad | | | |
| DHAG | DH | D: Germany | I: Industry (user) | | Dillinger Hütte AG | | | |
| DHE | | D: Germany | R: Railway | | Delmenhorst - Harpstedter Eisenbahn GmbH | | www.dhe-reisen.de/ | |
| DHEER | | D: Germany | Y: Military | | Detsches Heer | The German Army was formed after the unification of Germany under Prussian leadership in 1871 and dissolved in 1919, after the defeat of the German Empire in World War I. | | |
| DHL | | D: Germany | L: Logistics company | | DHL (Dalsey, Hillblom and Lynn) International GmbH | | | |
| DHR | | IND: India | N: Narrow gauge railway | | Darjeeling and Himalayan Railway | | | |
| DHSF | | D: Germany | Y: Military | | Deutsche Hochseeflotte (-1918) | | | |
| DIN | | D: Germany | B: Bus | Dingolfingen | | | | |
| DISP | SDL | D: Germany | R: Railway | | Siemens Dispolok GmbH | | www.dispolok.com/ | |
| DIVT | | CDN: Canada | B: Bus | | Diversified Transportation | | | |
| DJ | | DK: Denmark | R: Railway | | Dansk Jernbane ApS | 2005 - 2007 | | |
| DJJX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | The David J. Joseph Co. | | | |
| DJTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | David J. Joseph Transportation | | | |
| DKB | | D: Germany | R: Railway | | Dürener Kreisbahn | | | |
| DKBM | | D: Germany | N: Narrow gauge railway | | Dampf-Kleinbahn Mühlenstroth | | | |
| DKM | | D: Germany | Y: Military | | Deutsche Kriegsmarine (1919-1945) | | | |
| DKPZ | | SK: Slovakia | C: City traffic | | Doprávný Komunálny Podnik Zilina | | | |
| DKV | | H: Hungary | C: City traffic | Debrecen | Debreceni Közlekedési Vállalat | | | |
| DL | | USA: United States of America | R: Railway | | Delaware-Lackawanna Railroad Company | | | |
| DLAW | | PL: Poland | B: Bus | | Dolnośląskie Linie Autobusowe | | | |
| DLEI | | D: Germany | M: Industry (railway maintenance) | | Die Lei GmbH | | http://www.die-lei-gleisbau.de/ | |
| DLIN | | USA: United States of America | X: Phantasy | | Dollar Line | | | |
| DLMX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Daylight Locomotives & Machine Works, Inc. | | | |
| DLRX | | USA: United States of America | I: Industry (user) | | General Electric Rail Services Corp. | | | |
| DLW | | USA: United States of America | R: Railway | | Delaware, Lackawanna & Western R.R. | | | |
| DLWR | | USA: United States of America | R: Railway | | Depew, Lancaster & Western R.R. Co., Inc. | | | |
| DM | | USA: United States of America | R: Railway | | Detroit & Mackinak Railroad | | | |
| DME | | D: Germany | R: Railway | | Dortmund-Märkische Eisenbahn | | | |
| DMER | DME | USA: United States of America | R: Railway | | Dakota, Minnesota & Eastern R.R. Corp. | | | |
| DMIR | | USA: United States of America | R: Railway | | Duluth, Missabe & Iron Range Railway | | | |
| DMIX | | USA: United States of America | I: Industry (user) | | ADM Transportation | | | |
| DMR | | USA: United States of America | ??? | | Disney World monorail | | | |
| DMRC | | IND: India | C: City traffic | | Delhi Metro Rail Corporation Ltd. | | | |
| DMVW | | USA: United States of America | R: Railway | | Dakota, Missouri Valley & Western R.R., Inc. | | | |
| DNCS | NCS | D: Germany | I: Industry (user) | | Daher Projects GmbH | | | |
| DNR | | SN: Senegal | R: Railway | | Dakar - Niger Railway | | | |
| DNT | | CZ: Czech Republic | ??? | | | | | |
| DNV | | D: Germany | TB: Tourist agency | | DNV-Touristik GmbH | | | |
| DO | DSW | D: Germany | C: City traffic | Dortmund | Dortmunder Stadtwerke AG | | | |
| DOBPB | | D: Germany | C: City traffic | | Döbelner Pferdebahn | | | |
| DOCK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Docklands Buses | | http://en.wikipedia.org/wiki/Docklands_Buses | |
| DOHO | | H: Hungary | N: Narrow gauge railway | | Dorogi homokvasút | | | |
| DOHOKU | | J: Japan | B: Bus | | Dohoku Bus Co. | | https://www.dohokubus.com/ | |
| DOLN | DBG | A: Austria | N: Narrow gauge railway | | Döllnitzbahn | | www.doellnitzbahn.de/ | |
| DOMENICO | | US-NJ: USA, New Jersey | B: Bus | | Domenico Bus Service | | | |
| DONCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Doncaster Corporation Transport | | | |
| DONGBU | | USA: United States of America | B: Bus | | Dongbu Tour | | | |
| DONI | | UA: Ukraine | C: City traffic | Donietsk | | | | |
| DORI | | RO: Romania | R: Railway | | Dori Trans SRL Roman | | | |
| DOS | | USA: United States of America | R: Railway | | Delaware Otsego Corp. | | | |
| DOTX | | USA: United States of America | O: Organisation | | USDOT/Federal Railroad Administration | | | |
| DOWNTB | | USA: United States of America | B: Bus | | Downtown Bus | | | |
| DOWX | | USA: United States of America | I: Industry (user) | | Dow Chemicals | | | |
| DP | | DDR: German Democratic Republic | O: Organisation | | Deutsche Post (DDR) | | | |
| DPB | | SK: Slovakia | C: City traffic | Bratislava | Dopravny Podnik Bratislava | | | |
| DPCHJ | | CZ: Czech Republic | C: City traffic | | Dopravní podnik měst Chomutova a Jirkova | | https://de.wikipedia.org/wiki/Dopravn%C3%AD_podnik_m%C4%9Bst_Chomutova_a_Jirkova | |
| DPCX | | USA: United States of America | I: Industry (user) | | Dragon Cement | | | |
| DPM | | D: Germany | B: Bus | | Deutsche Post Mobility GmbH | | https://de.wikipedia.org/wiki/Deutsche_Post_Mobility | |
| DPMBB | | SK: Slovakia | C: City traffic | Banska Bystrica | Dopravný podnik mesta Banská Bystrica | | http://www.dpmbb.eu/ | |
| DPMCB | | CZ: Czech Republic | C: City traffic | České Budějovice | Dopravní podnik města České Budějovice | | https://cs.wikipedia.org/wiki/Dopravn%C3%AD_podnik_m%C4%9Bsta_%C4%8Cesk%C3%A9_Bud%C4%9Bjovice | |
| DPMHK | | CZ: Czech Republic | C: City traffic | Hradec Králové | Dopravní podnik města Hradce Králové | | | |
| DPMJ | | CZ: Czech Republic | C: City traffic | Jihlava | Dopravní podnik města Jihlavy | | https://www.dpmj.cz/ | |
| DPMK | | SK: Slovakia | C: City traffic | Kosice | Dopravni Podnik Mesta Kosice | | | |
| DPML | Dopravní podnik měst Liberce a Jablonce nad Nisou | CZ: Czech Republic | C: City traffic | Liberec | | | | |
| DPMM | | SK: Slovakia | B: Bus | Martin | Dopravný podnik mesta Martin | | | |
| DPMO | DPO | CZ: Czech Republic | C: City traffic | Ostrava | Dopravní Podnik Ostrava a.s. | | http://www.dpo.cz/ | |
| DPMP | | SK: Slovakia | C: City traffic | | Dopravný podnik mesta Prešov, a. s. | | www.dpmp.sk | |
| DPMUL | | CZ: Czech Republic | C: City traffic | Ústí nad Labem | Dopravní podnik města Ústí nad Labem | | | |
| DPMZ | | SK: Slovakia | C: City traffic | Žilina | Dopravný podnik mesta Žiliny s.r.o. | | | |
| DPSPA | | I: Italy | R: Railway | | Dinazzano Po Spa. | | | |
| DR | | DDR: German Democratic Republic | R: Railway | | Deutsche Reichsbahn (DDR, 1945 - ) | | | |
| DRABAS | | PL: Poland | B: Bus | | Licencjonowane Przewozy Krajowe i Międzynarodowe Marcin Drabas | | | |
| DRACH | | D: Germany | N: Narrow gauge railway | | Drachenfelsbahn Königswinter | | www.drachenfelsbahn-koenigswinter.de/ | |
| DRB | DR | D: Germany | R: Railway | | Deutsche Reichsbahn (1937-1945) | | | |
| DRCL | | US-NJ: USA, New Jersey | B: Bus | | Delaware River Coach Lines | an affiliate of Trans-Bridge Lines | | |
| DREAM | | J: Japan | B: Bus | | Dream Kanko Bus Co. | | | |
| DRES | | D: Germany | N: Narrow gauge railway | | Dresden, Lilliput Eisenbahn | | | |
| DRG | | D: Germany | R: Railway | | Deutsche Reichsbahn-Gesellschaft ( - 1945) | | | |
| DRGW | | USA: United States of America | R: Railway | | Denver & Rio Grande Western Railroad | | | |
| DRHL | | D: Germany | B: Bus | | Dr Richard Herrmann Linienverkehr GmbH | | | |
| DRI | | USA: United States of America | R: Railway | | Davenport, Rock Island & North Western Ry. Co. | | | |
| DRK | | D: Germany | O: Organisation | | Deutsche Rotes Kreuz | | | |
| DROGIN | | USA: United States of America | B: Bus | | Drogin Bus Company | | | |
| DROU | | F: France | M: Industry (railway maintenance) | | Drouard | | | |
| DRP | | D: Germany | B: Bus | | Deutsche Reichspost | | | |
| DRR | DR | USA: United States of America | R: Railway | | Dardanelle & Russellville R.R. Co. | | | |
| DRRI | | A: Austria | B: Bus | | Dr. Richard Linien GmbH & Co KG | | | |
| DRS | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Direct Rail Services | Direct Rail Services (DRS) is a freight operating company created by British Nuclear Fuels Limited. The company started rail operations in 1995 using heavily refurbished Class 20/3 diesel locomotives. Since then it has expanded greatly, and has acquired many more locomotives, most bought second-hand and subsequently refurbished. Ownership of DRS was transferred from BNFL to the Nuclear Decommissioning Authority when the NDA was created on 1 April 2005, under the terms of the Energy Act 2004. DRS remains unique in Britain, remaining a publicly-owned rail freight company. DRS now operates all nuclear-flask trains in the country. | http://www.directrailservices.com/ | |
| DRT | | CDN: Canada | B: Bus | | Durham Regional Transit | | | |
| DRUS | DR | USA: United States of America | R: Railway | | Dardanelle & Russellville | | | |
| DRX | | USA: United States of America | I: Industry (user) | | Deep Rock Oil Corp. | | | |
| DS | DSNG | USA: United States of America | N: Narrow gauge railway | | Durango and Silverton Railroad | | | |
| DSB | | DK: Denmark | ??? | | | | | |
| DSEX | | USA: United States of America | I: Industry (user) | | East Carbon Development Co. | | | |
| DSM | | NL: Netherlands | ??? | | DSM (Staatsmijnen) | | | |
| DSOU | DS | USA: United States of America | R: Railway | | Durham and Southern Ry. Co. | | | |
| DSR | DSR | USA: United States of America | C: City traffic | Detroit | Department of Street Railways | | | |
| DSRC | | USA: United States of America | R: Railway | | Dakota Southern Railway Company | | | |
| DSRP | DBSRP | PL: Poland | R: Railway | | DB Schenker Rail Polska | | | |
| DSRR | DBSR | RO: Romania | R: Railway | | DB Schenker Rail Romania SRL | | | |
| DSSA | | USA: United States of America | R: Railway | | Duluth, South Shore & Atlantic Railway | | | |
| DSZO | | CZ: Czech Republic | C: City traffic | Zlín | Dopravní společnost Zlín-Otrokovice, s.r.o. | | | |
| DT | | USA: United States of America | R: Railway | | Detroit Terminal R.R. Co. | | | |
| DTA | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | Dartford Tunnel Authority | | | |
| DTCX | | USA: United States of America | I: Industry (user) | | Dominion Tar & Chemical Co., Ltd. | | | |
| DTH | | DZ: Algeria | A: Aviation | | Tassili Airlines | | https://en.wikipedia.org/wiki/Tassili_Airlines | |
| DTI | | USA: United States of America | R: Railway | | Detroit, Toledo & Ironton R.R. Co. | | | |
| DTRS | DTS | US-TX: USA, Texas | C: City traffic | Dallas | Dallas Transit System | The Dallas Transit System (DTS) was a public transit service operated by the city of Dallas, from 1964 to 1983. DTS was formed by the consolidation of various privately owned transit companies and streetcar lines. | https://en.wikipedia.org/wiki/Dallas_Area_Rapid_Transit#Precursor_agencies | |
| DTS | | USA: United States of America | R: Railway | | Detroit & Toledo Shore Line R.R. Co. | | | |
| DU | DVG | D: Germany | C: City traffic | | Duisburger Verkehrsgesellschaft AG | | | |
| DUBL | | IRL: Republic of Ireland | C: City traffic | Dublin | Dublin Bus | It is a subsidiary of Córas Iompair Éireann. | en.wikipedia.org/wiki/Dublin_Bus | |
| DUHA | | PL: Poland | B: Bus | Chrzanów | Duhabex, Długosz & Długosz, s.j. | | | |
| DUIS | DPR | D: Germany | R: Railway | | duisport rail GmbH | | | |
| DUNDEE | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Dundee Corporation Transport Department | - 1975 | | |
| DUNK | | F: France | C: City traffic | Dunkerque | | | | |
| DUP | | ??? | Z: Scale | | Double | | | |
| DUPX | | USA: United States of America | I: Industry (user) | | E.I. du Pont de Nemours & Co., Inc. | | | |
| DUR | | USA: United States of America | C: City traffic | Detroit | Detroit United Railway | | https://en.wikipedia.org/wiki/Detroit_United_Railway | |
| DURH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Durham Travel Services (Easylink) | | | |
| DUSG | | D: Germany | N: Narrow gauge railway | | Düsseldorf, Lilliput Eisenbahn | | | |
| DUT | DBR, 5D | NL: Netherlands | A: Aviation | | Dutchbird | | | |
| DUV | | H: Hungary | B: Bus | Dunaújváros | Alba Volán Dunaújváros | | | |
| DV | | H: Hungary | ??? | | Déli Vasút (Austro-Hungarian Southern Railway) | | | |
| DVAS | | H: Hungary | I: Industry (user) | | Dunai Vasmû | | | |
| DVB | | D: Germany | C: City traffic | Dresden | | | | |
| DVF | | F: France | M: Industry (railway maintenance) | | Dijonaise de Voies Ferrées | | | |
| DVID | | H: Hungary | ??? | | Debrecen, kisvasút | | | |
| DVR | | USA: United States of America | I: Industry (user) | | Devco Ry., Cape Breton Development Corp. (Coal Division) | | | |
| DVS | | USA: United States of America | R: Railway | | Delta Valley & Southern Ry. Co. | | | |
| DWP | | USA: United States of America | R: Railway | | Duluth Winnipeg & Pacific Railway | | | |
| DYNWW | | DDR: German Democratic Republic | O: Organisation | | SG Dynamo Weißwasser | | | |
| DZD | | SU: Sovietunion | N: Narrow gauge railway | | Detskie Zeleznie Dorogi - Children's Railways | Common category for different children's railways in the Sovietunion. | http://www.dzd-ussr.ru | |
| DZIE | | PL: Poland | B: Bus | Dzierzoniów | Sudecka Komunikacja Autobusowa, sp. z o.o. | | | |
| DZW | | D: Germany | I: Industry (user) | | Dampfziegelei Weißwasser | | | |
| E | EVAG | D: Germany | C: City traffic | Essen | Essener Verkehrs AG | | | |
| EACH | | USA: United States of America | R: Railway | | East Camden and Highland Railroad | | | |
| EAF | | ET: Egypt | Y: Military | | Egyptian Air Force | | | |
| EAGW | | USA: United States of America | B: Bus | | Eagleways New York | | | |
| EALING | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Ealing Community Transport | | | |
| EAMX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Everest Railcar Services, Inc. | | | |
| EAS | | GR: Greece | C: City traffic | Athen | | | | |
| EASH | | US-CA: USA, California | B: Bus | | Eastshore Lines | | | |
| EASS | | USA: United States of America | B: Bus | | Eastern Shuttle | | | |
| EAV | | I: Italy | R: Railway | | Ente Autonomo Volturno s.r.l. | | | |
| EAZ | EAL, EA | USA: United States of America | A: Aviation | | Eastern Airlines | 1926 - 1991 | | |
| EBG | | D: Germany | R: Railway | | | | | |
| EBGO | | D: Germany | R: Railway | | Eisenbahnbetriebsgesellschaft Oberelbe | | | |
| EBM | | D: Germany | RO: Railway operator | | EBM Cargo | | | |
| EBR | | D: Germany | V: Museum | | Eisenbahnfreunde Breisgau | | | |
| EBS | | D: Germany | R: Railway | | Erfurter Bahnservice GmbH | | | |
| EBT | | CH: Switzerland | R: Railway | | Emmental - Burgdorf - Thun-Bahn | | | |
| EBTN | EBT | USA: United States of America | N: Narrow gauge railway | | East Broad Top Railroad | | | |
| EBUL | | EU: European Union | ??? | | European Bulls | | | |
| EBUS | | SK: Slovakia | B: Bus | | Eurobus | renamed from SAD KDS (Kosice) in 2007 | http://www.eurobus.sk | |
| EBW | | D: Germany | R: Railway | | Eisenbahn-Bewachungs GmbH, NL Cargo | | www.ebw-online.com/ | |
| EC | | EAK: Kenya | A: Aviation | | East African Airways | | | |
| ECCO | | PL: Poland | R: Railway | | Ecco Rail | | | |
| ECH | | USA: United States of America | R: Railway | | East Camden and Highland Railway | | | |
| ECHIZ | | J: Japan | R: Railway | | Echizen Railway | | | |
| ECML | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | East Coast Main Line Company | | | |
| ECO | | FAN: Fantasy | R: Railway | | Eco Rail | | | |
| ECR | | F: France | R: Railway | | Euro Cargo Rail | | | |
| ECT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Edinburgh | Edinburgh Corporation Transport Department | | | |
| ECUX | | USA: United States of America | I: Industry (user) | | Exxon Mobil Corp. | | | |
| ECXX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | East Carbon Development Co. | | | |
| EDIL | | I: Italy | M: Industry (railway maintenance) | | Edilfer S.r.L., Tito | | | |
| EDMONTON | | USA: United States of America | C: City traffic | Edmonton | | | | |
| EDUBT | EBT | USA: United States of America | B: Bus | | Educational Bus Transportation | | | |
| EDW | | CH: Switzerland | A: Aviation | | Edelweiss Air | | https://en.wikipedia.org/wiki/Edelweiss_Air#Fleet | |
| EEAF | | EST: Estonia | YA: Military: Air force | | Estonian Air Force (Eesti Ohuvägi) | | https://en.wikipedia.org/wiki/Estonian_Air_Force | |
| EEB | | D: Germany | R: Railway | | Emsländische Eisenbahnen | | www.eeb-online.de/ | |
| EEC | | USA: United States of America | R: Railway | | East Erie Commercial R.R. | | | |
| EECW | EEC | PL: Poland | B: Bus | | Europa Express City | | | |
| EELX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Evans Railcar Leasing Co. | | | |
| EEST | | RO: Romania | R: Railway | | EuroEst S.A. Romania | | | |
| EETC | | NL: Netherlands | P: Pool (Leasing / wagon pool) | | Euro Express Treincharter | | | |
| EFA | | BR: Brazil | R: Railway | | Estrada de Ferro Araraquarense | | | |
| EFCB | | BR: Brazil | R: Railway | | Estrada de Ferro Central do Brasil / Central Brazilian Railway | | | |
| EFEA | | RA: Argentina | R: Railway | | Empresa Ferrocarriles del Estado Argentino | | | |
| EFFIAN | | USA: United States of America | B: Bus | | Effian Bus Company | | | |
| EFL | | BR: Brazil | R: Railway | | Estrada de Ferro Leopoldina | | | |
| EFNOB | NOB | BR: Brazil | R: Railway | | Estrada de Ferro Noroeste do Brasil | | https://de.wikipedia.org/wiki/E.F._Noroeste_do_Brasil | |
| EFRI | | L: Luxembourg | B: Bus | | Emile Frisch | | | |
| EFS | | BR: Brazil | R: Railway | | Estrada de Ferro Sorocabana | | | |
| EFSA | | CH: Switzerland | M: Industry (railway maintenance) | | EFSA SA | | http://www.efsa.ch/ | |
| EFSJ | | BR: Brazil | R: Railway | | Estrada de Ferro Santos a Jundiaí | | | |
| EFVM | | BR: Brazil | R: Railway | | Estrada de Ferro Vitoria a Minas | | | |
| EFW | | D: Germany | RO: Railway operator | | EfW-Verkehrsgesellschaft | | | |
| EGB | | D: Germany | R: Railway | | Erzgebirgsbahn | | | |
| EGEC | | USA: United States of America | B: Bus | | Evergreen Equipment Company | | | |
| EGEN | | F: France | M: Industry (railway maintenance) | | E-Génie | | | |
| EGENB | | D: Germany | B: Bus | | Egenberger GmbH | | https://egenbergermobil.de/ | |
| EGG | | D: Germany | M: Industry (railway maintenance) | | Erfurter Gleisbau GmbH | | | |
| EGID | | D: Germany | I: Industry (user) | | Deutsche Steinwerke St. Egidien | | | |
| EGLEIS | | D: Germany | R: Railway | | Eurogralis GmbH | | | |
| EGOO | | D: Germany | R: Railway | | e.g.o.o. Eisenbahngesellschaft Ostfriesland-Oldenburg | | | |
| EGP | | D: Germany | R: Railway | | Eisenbahngesellschaft Potsdam mbH | since 2010 ENON GmbH | | |
| EH | | D: Germany | R: Railway | | Eisenbahn & Häfen GmbH | | www.eisenbahn-und-haefen-gmbh.de/ | |
| EHUBER | | D: Germany | B: Bus | | Verkehrsbetrieb Ettenhuber GmbH | | | |
| EHWALD | | D: Germany | B: Bus | Bergheim | Omnibusbetrieb G. Ehwald GbR | | | |
| EI | | I: Italy | Y: Military | | Esercito Italiano (Italian Army) | | | |
| EIB | | D: Germany | R: Railway | | Erfurter Industriebahn | | www.erfurter-bahn.de/ | |
| EICH | | D: Germany | M: Industry (railway maintenance) | | Eichholz | | | |
| EIHZ | | D: Germany | M: Industry (railway maintenance) | | Eichholz Rail GmbH | | http://www.eichholz-rail.com/ | |
| EILT | | D: Germany | R: Railway | | Eisenbahn, Logistik & Transporte GmbH | | http://www.eilt-evu.de/ | |
| EIRR | | USA: United States of America | R: Railway | | Eastern Idaho Railroad Incorporation | | | |
| EIVEL | | D: Germany | I: Industry (user) | | Eichholz Eivel GmbH | | | |
| EIZAN | | J: Japan | R: Railway | Kyoto | Eizan Electric Railway | | | |
| EJE | | USA: United States of America | R: Railway | | Elgin, Joliet and Eastern | | | |
| EJET | | ??? | A: Aviation | | Easyjet | | | |
| EK | | D: Germany | P: Pool (Leasing / wagon pool) | | EisenbahnKurier | | | |
| EKAT | | RUS: Russia | B: Bus | | Awtotransport Ekaterinburg | | | |
| EKJ | | S: Sweden | R: Railway | | Ängelholm - Klippan Järnväg (Pyttebanan) | 1904 - 1928 | | |
| EKO | | D: Germany | R: Railway | | EKO Transportgesellschaft mbH | | www.eko-trans.de/ | |
| EKSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | E. Kahn's Sons Co., Cincinnati, Ohio (National Car Co.) | later: Fruit Growers Express Co. | | |
| EL | | USA: United States of America | R: Railway | | Erie Lackawanna Railroad | | | |
| ELBC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | East London Bus and Coach | On 1 April 1989, London Buses was divided into 11 separate business units, one of which was East London. | | |
| ELBL | | PL: Poland | C: City traffic | | Elblag | | | |
| ELBUD | | PL: Poland | B: Bus | Jaworzno | Elbud K Górski i B Górska Spółka Jawna | | | |
| ELC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | East London Coaches | | | |
| ELGIN | | USA: United States of America | B: Bus | | City of Elgin | | | |
| ELIP | | E: Spain | TB: Tourist agency | | Elipsos Internacional S.A. | Elipsos Internacional S.A. is a Spanish company which was set up in 2001 by Spanish RENFE and French SNCF with a 50% share each. It was created to handle the logistics of Trenhotel night railway services between Spain and France, Switzerland and Italy. | https://en.wikipedia.org/wiki/Elipsos | |
| ELK | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacyjny w Ełku | | https://pl.wikipedia.org/wiki/Miejski_Zak%C5%82ad_Komunikacyjny_w_E%C5%82ku | |
| ELL | | A: Austria | P: Pool (Leasing / wagon pool) | | ELL (European Locomotive Leasing) | | | |
| ELOT | | D: Germany | R: Railway | | Reicheisenbahn Elsaß-Lothringen | | | |
| ELS | | USA: United States of America | R: Railway | | Escanaba and Lake Superior Railroad | | | |
| ELV | | CO: Colombia | A: Aviation | | Transportes Aereos Nacionales de Selva (TANS) | | | |
| ELY | | IL: Israel | A: Aviation | | El-Al Ltd | | https://en.wikipedia.org/wiki/El-Al_Ltd | |
| EMA | | EST: Estonia | Y: Military | | Estonian Military Aviation | | | |
| EMCO | ERIE | USA: United States of America | R: Railway | | Erie Mining Company | | | |
| EMD | EMDX | USA: United States of America | F: Industry (manufacturer) | | Electro Motive Leasing | | | |
| EMMH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Emmrheath Ltd. | | | |
| EMN | | D: Germany | RO: Railway operator | | Transfer Kornwestheim GmbH | | | |
| EMONS | EBT | D: Germany | R: Railway | | Emons Bahntransporte GmbH | | | |
| EMSR | | USA: United States of America | C: City traffic | Boston | Eastern Massachusetts Street Railway | | https://en.wikipedia.org/wiki/Eastern_Massachusetts_Street_Railway | |
| EMT | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | East Midlands Trains | | http://www.eastmidlandstrains.co.uk/EMTrains | |
| EMTM | EMT | E: Spain | C: City traffic | Madrid | Empresa Municipal de Transportes de Madrid | | https://en.wikipedia.org/wiki/Empresa_Municipal_de_Transportes_de_Madrid | |
| EMTPM | | E: Spain | C: City traffic | Palma de Mallorca | Empresa Municipal de Transportes de Palma de Mallorca | | | |
| ENAFER | | PE: Peru | R: Railway | | Empresa Nacional de Ferrocarriles del Peru | | en.wikipedia.org/wiki/Empresa_Nacional_de_Ferrocarriles_del_Peru | |
| ENAT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Eastern National | | | |
| END | | D: Germany | C: City traffic | Esslingen | Überlandstraßenbahn Esslingen-Nellingen-Denkendorf | | | |
| ENDX | | MEX: Mexico | P: Pool (Leasing / wagon pool) | | GATX de Mexico Inc. | | | |
| ENGB | | CH: Switzerland | B: Bus | | Engadin Bus | Eigentümer: Bus und Service AG | https://de.wikipedia.org/wiki/Engadin_Bus | |
| ENR | | ET: Egypt | R: Railway | | | | | |
| ENS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Ensignbus | | | |
| ENSHU | | J: Japan | R: Railway | | Enshu Railway | | https://en.wikipedia.org/wiki/Ensh%C5%AB_Railway_Line | |
| ENT | | PL: Poland | A: Aviation | | Enter Air | | https://en.wikipedia.org/wiki/Enter_Air | |
| EOK | | ROK: Korea | A: Aviation | | Aero K | | https://en.wikipedia.org/wiki/Aero_K | |
| EON | | D: Germany | I: Industry (user) | | e-on Kraftwerke GmbH | | | |
| EORX | | USA: United States of America | I: Industry (user) | | Cities Service Oil Co. | | | |
| EOS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Swallow Coach Company (EOS) | | | |
| EPA | | PRC: China | A: Aviation | | Donghai Airlines | | https://en.wikipedia.org/wiki/Donghai_Airlines | |
| EPR | | RO: Romania | RO: Railway operator | | E-P Rail Romani | | www.e-prail.ro | |
| EPSC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Epsom Coaches | | | |
| ER | | EST: Estonia | R: Railway | | Edelaraudtee | | www.edel.ee/ | |
| ERB | | USA: United States of America | S: Street transport company | | Erb Refrigerated Transport Co. | | | |
| ERC | | ETH: Ethiopia | R: Railway | | Ethiopian Railway Corporation | | | |
| ERCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Excel Railcar Corp. | | | |
| ERE | | D: Germany | I: Industry (user) | Holthausen bei Lingen | Erdölraffinerie Emsland | | | |
| ERES | | USA: United States of America | R: Railway | | Erie Western Railroad | | | |
| ERF | | I: Italy | ??? | | Esercizio Raccordi Ferroviari Di Porto Marghera S.P.A. | Porto di Venezia | | |
| ERH | | USA: United States of America | A: Aviation | | ERA Aviation | | https://en.wikipedia.org/wiki/Era_Aviation | |
| ERIE | | USA: United States of America | R: Railway | | Erie Railroad | | | |
| ERIT | | ??? | R: Railway | | Eritrean railway | | | |
| ERIXX | | D: Germany | R: Railway | | erixx GmbH | Die erixx GmbH ist ein 100-prozentiges Tochterunternehmen der Osthannoversche Eisenbahnen AG | http://www.erixx.de | |
| ERL | | MAL: Malaysia | R: Railway | | Express Rail Link | | https://en.wikipedia.org/wiki/ExpressRail | |
| ERMEWA | ERMD | F: France | P: Pool (Leasing / wagon pool) | | Ermewa Holding SA | | https://de.wikipedia.org/wiki/Groupe_Ermewa | |
| ERR | | D: Germany | P: Pool (Leasing / wagon pool) | | European Rail Rent | | | |
| ERS | | NL: Netherlands | R: Railway | Rotterdam | European Rail Shuttle B.V. | | http://www.ersrail.com/ | |
| ES | | ??? | Z: Scale | | Engine Shop | | | |
| ESG | ESGBI | D: Germany | RO: Railway operator | | Eisenbahn-Service-Gesellschaft mbH | | | |
| ESPN | | USA: United States of America | R: Railway | | East Penn Railroad LLC | | | |
| ESQ | ENR | CDN: Canada | R: Railway | | Esquimalt and Nanaimo Railway | | | |
| ESR | | ROK: Korea | A: Aviation | | Eastar Jet | | | |
| ESS | | D: Germany | C: City traffic | Esslingen | Esslinger Städtische Straßenbahn | | | |
| EST | | F: France | R: Railway | | Chemins de fed de l'Est | | | |
| ESTE | ETR | YV: Venezuela | A: Aviation | | Aerolíneas Estelar | | https://en.wikipedia.org/wiki/Aerol%C3%ADneas_Estelar | |
| ESUR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | East Surrey | | | |
| ESWE | | D: Germany | C: City traffic | Wiesbaden | ESWE Verkehrsgesellschaft mbH | Im Jahr 2000 wurden die Verkehrsbetriebe aus der Stadtwerke ausgegliedert und in eine eigenständige GmbH umgewandelt. | https://de.wikipedia.org/wiki/ESWE_Verkehrsgesellschaft | |
| ET | | E: Spain | N: Narrow gauge railway | | EuskoTren | | www.euskotren.es/ | |
| ETAT | | F: France | R: Railway | | Chemins de fer de l'État | | | |
| ETC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Excetera (Croydon Coaches) | | | |
| ETD | | UAE: United Arab Emirates | A: Aviation | | Etihad Airways | | | |
| ETF | | F: France | M: Industry (railway maintenance) | | Eurovia Travaux Ferroviaires | | https://www.eurovia.fr/activites/travaux-ferroviaires | |
| ETH | | ETH: Ethiopia | A: Aviation | | Ethiopian Airlines | | | |
| ETHB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | East Thames Buses | | | |
| ETJ | | DK: Denmark | R: Railway | | Ebeltoft - Trustrup Jernbane (Ebeltoftbanen) | 1901 - 1968 | | |
| ETL | | CDN: Canada | R: Railway | | Essex Terminal Railway | | | |
| ETR | | J: Japan | R: Railway | | Echigo Tokimeki Railway | | https://en.wikipedia.org/wiki/Echigo_Tokimeki_Railway | |
| ETS | | CDN: Canada | C: City traffic | | Edmonton Transit System | | | |
| EUEX | | D: Germany | P: Pool (Leasing / wagon pool) | | Euro-Express Sonderzüge | | http://www.euro-express.eu | |
| EUHI | | US-NJ: USA, New Jersey | B: Bus | | Elizabeth-Union-Hillside-Irvington Bus Line | | | |
| EUHOT | | D: Germany | R: Railway | | Euhotra - European Hotel Train | | | |
| EUP | | F: France | R: Railway | | Europorte | | | |
| EUPOOL | | D: Germany | M: Industry (railway maintenance) | | EuroPool GmbH | | | |
| EUR | | D: Germany | R: Railway | | Eurobahn - Keolis S.A. | | www.eurobahn.de/ | |
| EURB | | D: Germany | R: Railway | | EuRegioBahn | | | |
| EURP | | D: Germany | M: Industry (railway maintenance) | | Eurailpool | | | |
| EURS | | NL: Netherlands | M: Industry (railway maintenance) | | EuRailScout | | | |
| EUST | | EU: European Union | R: Railway | | Eurostar | | | |
| EUSW | | CH: Switzerland | M: Industry (railway maintenance) | | EuroSwitch | | | |
| EUWF | | CH: Switzerland | B: Bus | | Eurobus Welti-Furrer | | | |
| EVA | | D: Germany | P: Pool (Leasing / wagon pool) | | EVA | | | |
| EVAA | EVA | RC: Taiwan | A: Aviation | | Eva Airlines | | | |
| EVAG | | D: Germany | C: City traffic | Erfurt | | | | |
| EVB | | D: Germany | R: Railway | | Eisenbahnen und Verkehrsbetriebe Elbe-Weser | | | |
| EVMV | | D: Germany | C: City traffic | Koblenz | evm Verkehrs GmbH | | | |
| EVR | | EST: Estonia | R: Railway | | Eesti Raudtee | | www.evr.ee/ | |
| EVS | | F: France | P: Pool (Leasing / wagon pool) | | SNCF Etudes de Vagons Spécialisés | | | |
| EVWR | | USA: United States of America | R: Railway | | Evansville Western Railway | | | |
| EWEB | | L: Luxembourg | B: Bus | | Voyages Emile Weber | | | |
| EWG | | D: Germany | A: Aviation | | Eurowings | | https://en.wikipedia.org/wiki/Eurowings | |
| EWS | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | English Welsh and Scottish Railways | English, Welsh and Scottish Railway (EWS) is the largest British rail freight company. Created as a subsidiary of Wisconsin Central Ltd in 1996, it was acquired by Canadian National Railway when it bought Wisconsin Central in 2001. | http://www.ews-railway.co.uk/ | |
| EXCEL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Stansted | Excel | | | |
| EXJA | ASQ | USA: United States of America | A: Aviation | | ExpressJet Airlines, Inc. | | https://en.wikipedia.org/wiki/ExpressJet_Airlines | |
| EXY | | ZA: South Africa | A: Aviation | | South African Express Airways | | | |
| EYMS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | East Yorkshire Motor Services | | | |
| EYRE | | USA: United States of America | B: Bus | | Eyre Bus Service | | | |
| EZ | | CZ: Czech Republic | ??? | | | | | |
| EZE | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | Eastern Airways | | https://en.wikipedia.org/wiki/Eastern_Airways | |
| EZT | EZ | AUS: Australia | R: Railway | | El Zorro Transport Solution | | | |
| F | | F: France | ??? | | French railway companies | Different french railway companies in Era 2, used for the identical rolling stock. | | |
| FA | | AUS: Australia | R: Railway | | Freight Australia | | | |
| FAA | | RA: Argentina | Y: Military | | Fuerza Aérea Argentina | | https://en.wikipedia.org/wiki/Argentine_Air_Force | |
| FAAUS | FAA | USA: United States of America | O: Organisation | | Federal Aviation Administration | | | |
| FAB | | BOL: Bolivia | YA: Military: Air force | | Fuerza Aérea Boliviana | | | |
| FABE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Aberdeen | | | |
| FABN | | I: Italy | R: Railway | | Ferrovia Alifana e Benevento Napoli | | http://it.wikipedia.org/wiki/MetroCampania_NordEst | |
| FACC | | USA: United States of America | C: City traffic | New York | Fifth Avenue Coach Company | | | |
| FACO | | USA: United States of America | B: Bus | | Fifth Avenue Coach Lines | | | |
| FAE | | EC: Ecuador | YA: Military: Air force | | Fuerza Aérea Ecuatoriana | | | |
| FAFL | | F: France | Y: Military | | Forces Aériennes Françaises Libres | | https://en.wikipedia.org/wiki/Free_French_Air_Forces | |
| FAH | | H: Hungary | A: Aviation | | Farnair Hungary | | https://en.wikipedia.org/wiki/Finnish_Air_Force | |
| FAIRLAWN | | US-NJ: USA, New Jersey | B: Bus | | Fair Lawn Transportation | | | |
| FAKING | | USA: United States of America | B: Bus | | F. A. King | | | |
| FAL | FA | I: Italy | R: Railway | | Ferrovia Alifana | | | |
| FALB | FAL | I: Italy | N: Narrow gauge railway | Bari | Ferrovie Appulo-Lucane | | | |
| FALCK | | I: Italy | I: Industry (user) | Sesto San Giovanni | Acciaierie Falck | | | |
| FAP | | I: Italy | ??? | | FAP - Ferrovia Alto Pistoiese | | | |
| FAPL | FAL | I: Italy | R: Railway | | Ferrovie Appuo Lucane | | http://www.fal-srl.it/ | |
| FAPY | FAP | YU: Yugoslavia | T: Type of car, lorry | | | | | |
| FART | | CH: Switzerland | R: Railway | | Ferrovie Autolinee Regionali Ticinesi (Centovallibahn) | | | |
| FAS | | I: Italy | R: Railway | | Ferrovia Adriatico Sangritana | | https://en.wikipedia.org/wiki/Ferrovia_Adriatico_Sangritana | |
| FAU | | H: Hungary | B: Bus | Budapest | Fõvárosi Autóbüsz Üzem | | | |
| FAX | | US-CA: USA, California | B: Bus | | Fresno Area Express | | | |
| FB | | CH: Switzerland | R: Railway | | Forchbahn | | | |
| FBA | | RA: Argentina | R: Railway | | Ferrobaires:(Unidad Ejecutora del Programa Ferroviario Provincial | | | |
| FBDK | FB | DK: Denmark | R: Railway | | Falsterbanen | 1872 - 1893 | | |
| FBP | | I: Italy | R: Railway | | Ferrovia Bologna-Portomaggiore | | | |
| FBTV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Berkshire & The Thames Valley | | http://en.wikipedia.org/wiki/First_Berkshire_%26_The_Thames_Valley | |
| FBV | | I: Italy | R: Railway | | Ferrovia Bologna Vignola | Now integrated in Ferrovia Emilia Romagna | | |
| FC | | RA: Argentina | R: Railway | | FerroCentral | | | |
| FCA | | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | First Choice Airways | | https://en.wikipedia.org/wiki/First_Choice_Airways | |
| FCAL | fc | I: Italy | N: Narrow gauge railway | | Ferrovie della Calabria | | | |
| FCB | | I: Italy | R: Railway | | Ferrovia Cancello - Benevento | | | |
| FCC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | First Capital Connect | | | |
| FCCA | | PE: Peru | R: Railway | | Ferrocarril Central Andino | | https://en.wikipedia.org/wiki/Ferrocarril_Central_Andino | |
| FCCCO | | E: Spain | M: Industry (railway maintenance) | | Fomento de Construcciones y Contratas, S.A. (FCC) | | | |
| FCCM | | MEX: Mexico | R: Railway | | Compania de Ferrocarriles Chiapas Mayab S.A. de C.V. | | | |
| FCCX | | USA: United States of America | R: Railway | | Foxley Cattle Co. | | | |
| FCE | | I: Italy | R: Railway | | Ferrovie Circumetna | | | |
| FCEN | | USA: United States of America | R: Railway | | Florida Central R.R. Co., Inc. | | | |
| FCI | | MEX: Mexico | R: Railway | | Ferrocarril Interoceánico de México | | | |
| FCL | | AUS: Australia | R: Railway | | | ~Sorin Oprisan | | |
| FCLB | FCL | I: Italy | R: Railway | | Ferrovie Calabro Lucane | | | |
| FCM | | MEX: Mexico | R: Railway | | Ferrocarriles Nacionales de Mexico | | | |
| FCP | | MEX: Mexico | R: Railway | | Ferrocarril del Pacifico, S.A. de C.V. | | | |
| FCSR | FR | RA: Argentina | R: Railway | | Ferrocarrille San Roca | | | |
| FCU | | I: Italy | R: Railway | | Ferrovia Centrale Umbra | | | |
| FCV | | I: Italy | R: Railway | | Ferrovia Casalecchio - Vignola | Today part of Ferrovia Emilia Romagna | | |
| FD | | D: Germany | O: Organisation | | Fernmeldedienst | | | |
| FDA | | J: Japan | A: Aviation | | Fuji Dream Airlines | | | |
| FDBA | BAG | D: Germany | A: Aviation | | DBA Luftfahrtgesellschaft mbH | former Deutsche BA | https://en.wikipedia.org/wiki/Deutsche_BA | |
| FDC | FCC | C: Cuba | R: Railway | | Ferrocarrilles de Cuba | | | |
| FDDM | | USA: United States of America | R: Railway | | Fort Dodge, Des Moines & Southern Ry. Co. | | | |
| FDDMS | | USA: United States of America | R: Railway | | Fort Dodge, Des Moines & Southern | | | |
| FDE | | I: Italy | A: Aviation | | Federico II airways | | | |
| FDG | | I: Italy | R: Railway | | Ferrovia del Gargano | | | |
| FDS | | I: Italy | R: Railway | | Ferrovie della Sardegna | | | |
| FE | ? | DK: Denmark | A: Aviation | | Flying Enterprise | | https://en.wikipedia.org/wiki/Flying_Enterprise_(airline) | |
| FEA | | I: Italy | R: Railway | | Ferrovie Elettriche Abruzzesi SpA | | | |
| FEAR | | I: Italy | ??? | | Ferrovie Elettriche e Autoservizi Riuniti | | | |
| FEAT | FEA | RC: Taiwan | A: Aviation | | Far Eastern Air Transport | | https://en.wikipedia.org/wiki/Far_Eastern_Air_Transport | |
| FEB | | I: Italy | R: Railway | | Ferrovie Elettriche Biellesi | | | |
| FEC | | USA: United States of America | R: Railway | | Florida East Coast | | | |
| FEG | | D: Germany | RO: Railway operator | | Freiberger Eisenbahn | | | |
| FEK | | D: Germany | O: Organisation | | Freundeskreis Eisenbahn Köln e.V. | | | |
| FENV | Feniks V | PL: Poland | B: Bus | Gliwice | Feniks V Sp. z o.o. | | | |
| FEP | | BR: Brazil | ??? | | FEPASA: Ferrovia Paulista SA / Railways of S?o Paulo | | | |
| FEPASA | | RCH: Chile | R: Railway | | Ferrocarril Del Pacifico S.A. | | | |
| FER | | I: Italy | R: Railway | | Ferrovie Emilia Romagna | | | |
| FERG | | H: Hungary | I: Industry (user) | | Ferroglobus | | | |
| FERL | | E: Spain | M: Industry (railway maintenance) | | Ferrovial | | | |
| FERNETTI | | I: Italy | L: Logistics company | | Autoporto Fernetti Spa Triest | | | |
| FERS | | I: Italy | M: Industry (railway maintenance) | | Fersalento | | | |
| FERT | | E: Spain | R: Railway | | Fertagus | | www.fertagus.pt/ | |
| FERU | | D: Germany | I: Industry (user) | | Felswerke Rübeland | | | |
| FERV | | P: Portugal | M: Industry (railway maintenance) | | Ferovias | | | |
| FESX | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Essex | | | |
| FETR | | F: France | M: Industry (railway maintenance) | | Ferrotract | | | |
| FEVE | | E: Spain | N: Narrow gauge railway | | Ferrocarriles Españoles de Via Estrecha | | www.feve.es/ | |
| FFEST | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Ffestiniog Railway | The Ffestiniog Railway is a 2ft (nom.) gauge railway in North Wales. It is probably the most famous and influential narrow gauge railway in the world! The railway was built to carry slate from the quarries in Blaenau Ffestiniog to the quays in Porthmadog. Without the railway it is doubtful that either of these places would have developed anywhere near to the extent they have today. At first a mixture of horse and gravity power was used, but horses were later replaced by steam power. The railway operated continuously from 1836 until it closed in 1946. It now operates as a preserved tourist line, reopening in stages from 1954 until 1982. | | |
| FFJ | | DK: Denmark | R: Railway | | Fjerritslev-Frederikshavn Jernbane | 1897 - 1969 | | |
| FFM | | D: Germany | V: Museum | | Feldbahnmuseum Frankfurt am Main | | | |
| FFXC | | USA: United States of America | C: City traffic | | Fairfax Connector | | https://en.wikipedia.org/wiki/Fairfax_Connector | |
| FGC | | E: Spain | N: Narrow gauge railway | | Ferrocarrils de la Generalitat de Catalunya | | www.fgc.net/ | |
| FGCA | FGC | I: Italy | R: Railway | | Ferrovia Genova-Casella | | | |
| FGCX | | USA: United States of America | R: Railway | | Fruit Growers Express Co. | | | |
| FGE | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | First Great Eastern Ltd. | 1999: 262km standard gauge, electrified at 25kV 50 Hz First Great Eastern was a railway company that operated suburban, local and medium distance train services from London Liverpool Street via Romford to Essex and Ipswich. From April 1, 2004, all First Great Eastern services were transferred to 'one', a new company operating all services from Liverpool Street. Most lines previously served by First Great Eastern are electrified (25 kV AC overhead catenary) with the exception of the Marks Tey to Sudbury line, which is served by diesel units. | http://www.firstgroup.com/ | |
| FGEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Fruit Growers Express Co. | | | |
| FGLK | | USA: United States of America | R: Railway | | Finger Lakes | | | |
| FGMB | | RA: Argentina | R: Railway | | Ferrocarril General Manuel Belgrano | | | |
| FGRP | | P: Portugal | M: Industry (railway maintenance) | | Fergrupo | | | |
| FGV | | E: Spain | N: Narrow gauge railway | | Ferrocarrils de la Generalitat Valenciana | | www.fgv.es/ | |
| FGW | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | First Great Western Ltd. | 1999: 1360km standard gauge, not electrified First Great Western is the operating name of First Greater Western Ltd[1], a British train operating company owned by First Group, which operates services in the South West of England. In 1998, the bus operator First Group acquired Great Western, along with its subsidiary North Western Trains (later First North Western), and re-branded it with its present name. On 1st April 2006, First Great Western, First Great Western Link and Wessex Trains combined into the new Greater Western Franchise. First were announced as the operator of the combined franchise in December 2005 for a 10-year period. | http://www.firstgreatwestern.co.uk/ | |
| FHAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Flights Hallmark | | | |
| FHH | | PE: Peru | R: Railway | | Ferrocarril Huancayo-Huancavelica SA | | | |
| FIAT | | ??? | T: Type of car, lorry | | Fiat | | | |
| FIE | | AUS: Australia | I: Industry (user) | | Fletchers Internationl Exports | | | |
| FIFE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Walter Alexander and Sons (Fife) Ltd. | | https://en.wikipedia.org/wiki/Fife_Scottish | |
| FILB | | F: France | B: Bus | Tours | Fil Bleu | | | |
| FILS | | USA: United States of America | S: Street transport company | | Ficel Transport Inc. | | | |
| FIN | | FIN: Finland | A: Aviation | | Finnair | | | |
| FINA | | FIN: Finland | Y: Military | | Finnish Army | | | |
| FIP | | I: Italy | ??? | | Ferrovia Intra Premeno | | | |
| FIRE | | X: Global | O: Organisation | | Fire patrol | | | |
| FIRG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Glasgow | | | |
| FIRM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Manchester | | | |
| FJG | | USA: United States of America | R: Railway | | Fonda, Johnstown & Gloversville R.R. Co | transferred to New York, Susquehanna and Western Ry. Corp. | | |
| FJLCX | | MEX: Mexico | I: Industry (user) | | Fabrica de Jabon La Corona (Crown Soap Factory) | | | |
| FK | | D: Germany | R: Railway | | ? (Frankfurt-Königsteinek Eisenbahn) | | | |
| FKE | | D: Germany | R: Railway | | Frankfurt-Königsteiner Eisenbahn AG | | www.fke-online.de/ | |
| FL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Freightliner (GB) | Freightliner is a British freight operating company, founded in 1995. It is the second largest railfreight operator, after EWS. The origins of the Freightliner concept go back to the mid-1960's British Rail under Richard Beeching. As part of an overall modernisation and rationalisation programme, British Rail began moving freight using ISO containers on flat wagons between a series of dedicated inland terminals using gantry cranes for transhipment from road to rail. Although initially intended for domestic freight, this was soon overtaken by freight between deep sea ports, such as Southampton Maritime an and inland distribution terminals associated with centres of manufacturing or population such as Birmingham Landor Street. In 1995, Freightliner was privatised as a stand alone company, being bought out by its own management. | http://www.freightliner.co.uk/ | |
| FLA | | AUS: Australia | R: Railway | | Freightliner Australia | | | |
| FLAG | | D: Germany | C: City traffic | Frankfurt/M | | | | |
| FLAM | | N: Norway | ??? | | Flamsbana | | | |
| FLE | | X: Global | TOY: Toy, modell | | Fleischmann Modell Railway | | | |
| FLEN | | D: Germany | C: City traffic | Flensburg | | | | |
| FLEX | | D: Germany | R: Railway | | Flensburg-Express | | | |
| FLI | | DK: Denmark | A: Aviation | | Atlantic Airways | | https://en.wikipedia.org/wiki/Atlantic_Airways | |
| FLIN | | USA: United States of America | R: Railway | | Freightliner (USA) | | | |
| FLIX | | USA: United States of America | I: Industry (user) | | Farmland Industries | | | |
| FLIXB | | D: Germany | ??? | | FlixBus partners | | | |
| FLNK | | AUS: Australia | R: Railway | | FreightLink | | | |
| FLNX | | USA: United States of America | R: Railway | | R.P. Flynn, Inc., d/b/a Ohio Railway Supply | | | |
| FLOYD | | H: Hungary | R: Railway | | Floyd Kft. | | | |
| FLP | | CH: Switzerland | R: Railway | | Ferrovia Lugano-Ponte Tresa | | | |
| FLRY | | USA: United States of America | R: Railway | | Flat River Railway | Flat River Railway was spun off by PM in 1991 to run it's ex C&O Greenville-Lowell branch. | | |
| FLS | FL | USA: United States of America | R: Railway | | Family Lines System | | | |
| FLSP | | I: Italy | R: Railway | | Ferrovia Lana di Sopra-Postal | | | |
| FLXI | | USA: United States of America | T: Type of car, lorry | | The Flxible Co | | https://en.wikipedia.org/wiki/Flxible | |
| FM | | USA: United States of America | R: Railway | | | | | |
| FMA | | CH: Switzerland | R: Railway | | Chemin de fer Fribourg–Morat–Anet | | https://de.wikipedia.org/wiki/Chemin_de_fer_Fribourg%E2%80%93Morat%E2%80%93Anet | |
| FMBE | | US-NJ: USA, New Jersey | C: City traffic | | Five Mile Beach Electric Railway | | | |
| FMEX | | ??? | ??? | | | | | |
| FMG | | AUS: Australia | I: Industry (user) | | Fortescue Metals Group | | | |
| FMIX | | USA: United States of America | F: Industry (manufacturer) | | Fairbanks - Morse | | | |
| FMM | | I: Italy | R: Railway | | Societa per la Ferrovia Monza Molteno | | | |
| FMN | | F: France | Y: Military | | Marine National (France) | | | |
| FMP | | I: Italy | ??? | | Ferrovia Mantova-Peschiera | | | |
| FMR | FM | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Fragonset Merlin Railway | Fragonset Merlin Rail or FM Rail is a railway spot-hire and charter company based at Derby, United Kingdom. The company was formed in January 2005 following the merging of charter company Merlin Rail with spot-hire company Fragonset Railways. FM Rail lauched its new livery in September 2005. | http://www.fmrail.com/ | |
| FMRC | | USA: United States of America | R: Railway | | Farmrail Corporation | | | |
| FMT | | I: Italy | ??? | | | | | |
| FMTA | | CDN: Canada | B: Bus | | Fort McMurray Transit (Alberta) | | | |
| FNBL | | USA: United States of America | ??? | | Falconbridge Limited | | | |
| FNDM | FNM | MEX: Mexico | R: Railway | | Ferrocarriles Nacionales de México | | | |
| FNKB | | J: Japan | B: Bus | | Funabashi New Keisei Bus | | | |
| FNM | | I: Italy | R: Railway | | Ferrovie Nord Milano | | www.ferrovienord.it/ | |
| FNMM | | MEX: Mexico | R: Railway | | Ferrocarriles Nacional de Mexico | | | |
| FNS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Norfolk and Suffolk (First Eastern Counties) | | | |
| FNW | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | First North Western Ltd. | | | |
| FO | | CH: Switzerland | R: Railway | | Furka-Oberalp | | | |
| FOOTHILL | | US-CA: USA, California | C: City traffic | | Foothill Transit | | | |
| FORBUS | | PL: Poland | B: Bus | Bydgoszcz | Prywatna Komunikacja Miejska ForBus, sp. z o.o. | | | |
| FORD | | D: Germany | T: Type of car, lorry | | Ford | | | |
| FOTG | | D: Germany | C: City traffic | Frankfurt/M | Frankfurt-Offenbacher Trambahn Gesellschaft | | | |
| FOUR | | F: France | M: Industry (railway maintenance) | | Fourchard & Renard | | | |
| FP | | I: Italy | ??? | | Ferrovia Padane | | | |
| FPBX | | USA: United States of America | I: Industry (user) | | Federal Paper Board | | | |
| FPC | | RU: Burundi | R: Railway | | Federal Passenger Company | | | |
| FPG | | CH: Switzerland | A: Aviation | | TAG Aviation | | https://en.wikipedia.org/wiki/Techniques_d%27Avant_Garde#Aviation | |
| FPR | FP | USA: United States of America | R: Railway | | Fordyce & Princeton | | | |
| FPRR | FP | USA: United States of America | R: Railway | | Fordyce & Princeton R.R. Co. | | | |
| FPS | | I: Italy | R: Railway | | Ferrovia Parma Suzzara | integrated into FER: Ferrovie Emilia Romagna | | |
| FPSG | | I: Italy | R: Railway | | Ferrovia Porto San Giorgio-Amandola | | | |
| FR | | NL: Netherlands | B: Bus | | FRAM | | | |
| FRAS | | F: France | M: Industry (railway maintenance) | | Frasca | | | |
| FRC | | AUS: Australia | R: Railway | | FreightCorp | | | |
| FRDX | | USA: United States of America | I: Industry (user) | | Ford Motor Co. | | | |
| FREIS | | D: Germany | C: City traffic | | Stadt/Landkresi Freising Bus | | | |
| FREN | | F: France | M: Industry (railway maintenance) | | France Renouvellement | | | |
| FRET | | F: France | R: Railway | | | | | |
| FRETIT | | I: Italy | R: Railway | | FRET Italia | | | |
| FRG | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Fragonset Railways | 1997 - 2005 | https://en.wikipedia.org/wiki/FM_Rail | |
| FRI | | J: Japan | A: Aviation | | Fair Inc Ltd. | | | |
| FRICKE | | D: Germany | M: Industry (railway maintenance) | | | | | |
| FRID | | DK: Denmark | ??? | | | | | |
| FRL | | USA: United States of America | T: Type of car, lorry | | Freightliner | | | |
| FRR | | AUS: Australia | R: Railway | | FreightRail | | | |
| FRRD | | D: Germany | B: Bus | | Freiburger Reisedienst | | https://www.freiburger-reisedienst.de/ | |
| FRT | | CH: Switzerland | R: Railway | | Centovallibahn | | | |
| FRTS | | F: France | M: Industry (railway maintenance) | | Fertis | | | |
| FRV | | I: Italy | R: Railway | | Ferrovia Rezzato-Vobarno | | https://it.wikipedia.org/wiki/Ferrovia_Rezzato-Vobarno | |
| FRVR | | USA: United States of America | R: Railway | | Fox River Valley R.R. Corp. | | | |
| FS | | I: Italy | RS: State Railway | | | | | |
| FSB | | DK: Denmark | R: Railway | | Frederikshavn - Skagen Banen | 1890 - 1924 | | |
| FSE | | I: Italy | ??? | | Ferrovie del Sud-Est | | | |
| FSF | | I: Italy | ??? | | Ferrovia Suzzara Ferrara | | | |
| FSHOWA | | J: Japan | S: Street transport company | | Fukuoka Showa Taxi | | | |
| FSM | | I: Italy | ??? | | Ferrovia Stresa Mottarone | | | |
| FSMR | FSR | USA: United States of America | R: Railway | | Fort Smith Railroad | | | |
| FSR | SR | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | ScotRail Railways Ltd. | 1999: 3016km standard gauge, electrified at 25kV 50Hz First ScotRail is the brand under which First Group PLC runs its railway franchise to operate all domestic passenger services within Scotland, as well as the cross-border Caledonian Sleeper service to London, England. First Group has its headquarters in Aberdeen, Scotland. On 17 October 2004 the franchise was transferred to First Group from National Express resulting in the rebranding from ScotRail to First ScotRail. This was the first time the franchise has been renegotiated since the privatisation of British Rail. | http://www.firstscotrail.com/ | |
| FSRR | | MEX: Mexico | R: Railway | | Ferrocarril del Sureste, S.A. de C.V. | | | |
| FSSA | FS | E: Spain | N: Narrow gauge railway | | Ferrocarril de Sóller (Mallorca) | | www.trendesoller.com/ | |
| FSTL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Fastline Freight | | http://www.fastline-uk.com/freight | |
| FT | | I: Italy | R: Railway | Bari | Ferrotramviaria (Ferrovia Bari Nord Bari-Barletta) | | www.ferrovienordbarese.it/ | |
| FTA | | I: Italy | R: Railway | | Ferrovia Transatesina | | | |
| FTAR | FAEV | H: Hungary | N: Narrow gauge railway | | Fels?tárkány | | | |
| FTC | | I: Italy | ??? | | Ferrovia Torino Ceres | | | |
| FTG | | D: Germany | C: City traffic | Frankfurt/M | | | | |
| FTM | | I: Italy | R: Railway | | Ferrovie Trento-Male | | | |
| FTP | | I: Italy | ??? | | Ferrovie e Tramvie Padane | | | |
| FTRL | | USA: United States of America | R: Railway | | Foster Townsend Rail Logistics, Inc. | | | |
| FTS | FT | S: Sweden | R: Railway | | Falköpings Terminal AB | 1996 - 2004 | | |
| FTSX | | USA: United States of America | R: Railway | | Rairmont Tamper | | | |
| FTV | | I: Italy | R: Railway | | Ferrovie Tramvie Vicentine | | | |
| FUA | | E: Spain | A: Aviation | | Futura International Airways | | | |
| FUC | | I: Italy | R: Railway | | Societa Ferrovie Udine-Cividale | | | |
| FUJI | | J: Japan | R: Railway | | Fujikyu (Fuji Kyuko) Railway | | | |
| FUJIKYU | | J: Japan | R: Railway | | Fuji Kyuko | | | |
| FUJIMIN | | J: Japan | R: Railway | | Fuji Minobu Railway | 1912 - 1938 | https://en.wikipedia.org/wiki/Minobu_Line | |
| FUK | | J: Japan | R: Railway | | Keifuku Electric Railroad | | http://bus-en.fujikyu.co.jp | |
| FUKC | | J: Japan | C: City traffic | Fukuoka | Fukuoka City Transportation Bureau | | | |
| FUKS | | J: Japan | R: Railway | | Fukushima Transportation | | | |
| FUKU | | J: Japan | R: Railway | | Fukushuwan | | | |
| FUKUI | | J: Japan | R: Railway | | Fukui Railway | | https://en.wikipedia.org/wiki/Fukui_Railway | |
| FUNIC | | CH: Switzerland | C: City traffic | | Funicar | | https://www.funicar.ch/ | |
| FUORI | FMR | I: Italy | R: Railway | | FuoriMuro Servizi Portuali e Ferroviari Srl | | https://it.wikipedia.org/wiki/FuoriMuro | |
| FURRER | | CH: Switzerland | M: Industry (railway maintenance) | | Furrer + Frey AG | Catenary building | | |
| FURX | | USA: United States of America | R: Railway | | First Union Rail | | | |
| FUS | | MEX: Mexico | R: Railway | | Ferrocarriles Unidos del Sureste, S.A. de C.V. | | | |
| FUSO | | J: Japan | T: Type of car, lorry | | Mitsubishi Fuso Truck and Bus Corporation | | https://en.wikipedia.org/wiki/Fuso_(company) | |
| FUWA | | D: Germany | B: Bus | Fürstenwalde | | | | |
| FV | | AUS: Australia | R: Railway | | Freight Victoria | | | |
| FVAG | | D: Germany | C: City traffic | Freiburg | | | | |
| FVB | | I: Italy | ??? | | Ferrovia Valle Brembana | | | |
| FVCF | | I: Italy | M: Industry (railway maintenance) | | Francesco Ventura Construzioni Ferrovirie S.r.l | | http://www.fventura.it | |
| FVE | | D: Germany | R: Railway | | Farge-Vegesacker Eisenbahn | | | |
| FVO | | I: Italy | R: Railway | | Ferrovia Val d'Orba | | | |
| FVR | | USA: United States of America | X: Phantasy | | Fallsview Road | | | |
| FVS | | I: Italy | ??? | | FVS - Ferrovia Valle Seriana | | | |
| FVV | | H: Hungary | C: City traffic | Budapest | Fõvárosi Villamos Vasút | | | |
| FVVA | FVV | I: Italy | R: Railway | | Ferrovia Voghera - Varzi | 1931 - 1966, 32 km, normal gauge, 3000V = electrified. | | |
| FW | | CH: Switzerland | R: Railway | | Frauenfeld-Wil-Bahn | | | |
| FWAG | FW | F: France | P: Pool (Leasing / wagon pool) | | France Wagons | | | |
| FWB | | USA: United States of America | R: Railway | | Fort Worth Belt Ry. Co. | | | |
| FWD | | USA: United States of America | R: Railway | | Fort Worth and Denver Ry. Co. | | | |
| FWI | | F: France | A: Aviation | | Air Caraibes | | https://en.wikipedia.org/wiki/Air_Caraibes | |
| FWL | | USA: United States of America | A: Aviation | | Florida West International | | | |
| FWQ | | AUS: Australia | A: Aviation | | Flight West Airlines | | https://en.wikipedia.org/wiki/Flight_West_Airlines | |
| FWTA | | US-TX: USA, Texas | C: City traffic | Fort Worth | Fort Worth Transit Authority | | | |
| FWWR | | USA: United States of America | R: Railway | | Fort Worth & Western R.R. Co. | | | |
| FXE | | MEX: Mexico | R: Railway | | Ferrocarril Mexicano, S.D. de C.V. (FerroMex) | | | |
| GA | | USA: United States of America | R: Railway | | Georgia Railroad Co. | | | |
| GAA | | USA: United States of America | A: Aviation | | Business Express Airlines | | https://en.wikipedia.org/wiki/Business_Express_Airlines | |
| GABON | | G: Gabon | R: Railway | | Trans-Gabon Railway | | | |
| GABW | | D: Germany | R: Railway | | Go-ahead Baden-Württemberg GmbH | | go-ahead-bahn.de | |
| GAC | | PRC: China | T: Type of car, lorry | | Guangzhou Automobile Corporation | | https://en.wikipedia.org/wiki/GAC_Group | |
| GACX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General American Marks Company | | | |
| GAIT | | PL: Poland | C: City traffic | Gdansk | Gdańskie Autobusy i Tramwaje | On January 19, 2017, the company changed its name from Zakład Komunikacji Miejskiej in Gdańsk to Gdańskie Autobusy i Tramwaje . | https://pl.wikipedia.org/wiki/Gda%C5%84skie_Autobusy_i_Tramwaje | |
| GAJDA | | PL: Poland | B: Bus | Bielawa | Autokarowe Usługi Przewozowe Krzysztof Gajda | | | |
| GAKU | | J: Japan | R: Railway | | Gakunan Railway | | | |
| GALL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Galleon Travel | | | |
| GALLOP | | USA: United States of America | B: Bus | | Gallop Bus Lines | | | |
| GANO | | N: Norway | RO: Railway operator | | Go Ahead Nordic - ST - Sortoget | In 2018 the British company Go Ahead won the tender to operate passenger trains in Southwestern Norway from December 2019 for 8 years, with a possible extension of another two years. Long distance trains are operated between Oslo and Stavanger (Sorlandsbanen) and regional trains on Nelaug-Arendal (Arendalsbanen) and Stavanger-Egersund (Jaerbanen). The trainsets - owned by Norske Tog and currently used on the same lines by NSB - got or will get refreshed interiors. | http://www.go-aheadnordic.no/ | |
| GANZ | | H: Hungary | F: Industry (manufacturer) | | Ganz-MÁVAG | | | |
| GAO | | S: Sweden | A: Aviation | | Golden Air | | https://sv.wikipedia.org/wiki/Golden_Air | |
| GARM | | F: France | M: Industry (railway maintenance) | | Garmatex | | | |
| GARP | | US-NJ: USA, New Jersey | B: Bus | | Garfield-Passaic Transit | | | |
| GARX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General American Refrigerator Express Co. (General American Transportation Corp.) | | | |
| GATX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General American Tank Line (General American Transportation Corp.) | | | |
| GB | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | unknown in Great Britain | | | |
| GBAG | | D: Germany | I: Industry (user) | | Gelsenkirchener Bergwerks-AG | | | |
| GBJ | | S: Sweden | R: Railway | 1894 - 1940 | Göteborg - Borås Järnväg | | | |
| GBL | | USA: United States of America | B: Bus | | Green Bus Lines | | | |
| GBM | | D: Germany | F: Industry (manufacturer) | | GBM Gleisbaumechanik Brandenburg /H. GmbH | | http://www.gleisbaumechanik.de/ | |
| GBOR | | S: Sweden | C: City traffic | Göteborg | | | | |
| GBOY | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Golden Boy | | | |
| GBRCT | RCT | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | Royal Corps of Transport | | https://en.wikipedia.org/wiki/Royal_Corps_of_Transport | |
| GBRF | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | GB Railfreight | GB Railfreight (GBRf) is a British freight operating company. It is part of First Group. | http://www.gbrailfreight.com/ | |
| GBS | | CH: Switzerland | R: Railway | | Gürbetal-Bern-Schwarzenburg-Bahn | | | |
| GBW | | USA: United States of America | R: Railway | | Green Bay & Western Railroad | | | |
| GC | | S: Sweden | R: Railway | | Green Cargo | | | |
| GCA | | A: Austria | RO: Railway operator | | Grampetcargo Austria | | | |
| GCAN | | E: Spain | C: City traffic | | Gran Canaria | | | |
| GCCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General American Marks Company (GATX) | | | |
| GCEN | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Grand Central Railway | | | |
| GCF | | I: Italy | M: Industry (railway maintenance) | | Generale Construzioni Ferroviarie | | www.gcf.it | |
| GCFX | | CDN: Canada | F: Industry (manufacturer) | | Alstom Canada Incorporated | | | |
| GCIR | | IRQ: Iraq | R: Railway | | | | | |
| GCR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Great Central Railway | | | |
| GCRR | GC | USA: United States of America | R: Railway | | Georgia Central Ry. | | | |
| GCRTA | | USA: United States of America | C: City traffic | | Greater Cleveland Regional Transit Authority | | | |
| GCRX | | USA: United States of America | R: Railway | | Grand Canyon Railway | | | |
| GDA | ZKM | PL: Poland | C: City traffic | | Gdansk | | | |
| GDG | | S: Sweden | ??? | | | | | |
| GDJ | | S: Sweden | R: Railway | | Gävle - Dala Järnvägar | 1859 - 1948 | | |
| GDRTA | RTA | US-OH: USA, Ohio | C: City traffic | Dayton (OH) | Greater Dayton Regional Transit Authority | | https://en.wikipedia.org/wiki/Greater_Dayton_Regional_Transit_Authority | |
| GDS | | DK: Denmark | R: Railway | | Gribskovbanens Driftselskab (Gribskovbanen) | 1880 - 2001 | | |
| GDY | | PL: Poland | B: Bus | Gdynia | | | | |
| GEC | | D: Germany | A: Aviation | | Lufthansa Cargo | | | |
| GECX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | GEC/Alsthom | | | |
| GEFCO | | F: France | L: Logistics company | | GEFCO | | | |
| GEFER | GCF | I: Italy | M: Industry (railway maintenance) | | Gefer Costruzioni Ferroviarie | | http://www.gefer.it/index.html | |
| GELX | | USA: United States of America | I: Industry (user) | | Garvey Elevators, Inc. | | | |
| GEM | | H: Hungary | N: Narrow gauge railway | | Gemenci kisvasút | | | |
| GEMV | | H: Hungary | B: Bus | | Gemenc Volán | | | |
| GENFER | | I: Italy | O: Organisation | | Genio Ferroviari | | | |
| GENI | | F: France | M: Industry (railway maintenance) | | Genifer | | | |
| GENIAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Genial Bus Company | | | |
| GENPORT | | I: Italy | I: Industry (user) | | Port of Genova | | | |
| GENT | | B: Belgium | C: City traffic | Gent | | | | |
| GENTOUR | | CH: Switzerland | B: Bus | Vernier | Geneve-Tours | | | |
| GEOS | | I: Italy | M: Industry (railway maintenance) | | Geosintesi | | | |
| GERA | | D: Germany | C: City traffic | Gera | | | | |
| GERS | | EU: European Union | P: Pool (Leasing / wagon pool) | | General Electric Rail Services | | | |
| GES | | D: Germany | V: Museum | | Gesellschaft zur Erhaltung von Schienenfahrzeugen Stuttgart | | | |
| GEST | | I: Italy | C: City traffic | Florence / Firenze | Gestione del Servizio Tramviario | | | |
| GF | | USA: United States of America | R: Railway | | Georgia & Florida Railroad | | | |
| GFER | | I: Italy | M: Industry (railway maintenance) | | Global Fer S.p.A. | | http://www.globalferspa.it/ | |
| GFF | | D: Germany | P: Pool (Leasing / wagon pool) | | Gesellschaft für Fahrzeugtechnik mbH | | | |
| GFJ | | S: Sweden | R: Railway | | Gruvgården - Fors Järnväg | 1905 - 1967 | | |
| GFM | | CH: Switzerland | R: Railway | | Chemins de Fer Fribourgeois / Fribourg Railways | | | |
| GFR | | RO: Romania | R: Railway | | Grup Feroviar Roman | | www.gfr.ro/ | |
| GFRR | | USA: United States of America | R: Railway | | Georgia & Florida | | | |
| GGB | | CH: Switzerland | R: Railway | | Gornergratbahn | | | |
| GGOO | | CDN: Canada | B: Bus | | Grey Goose | | | |
| GGPTE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Greater Glasgow Passenger Transport Executive | | | |
| GGT | | USA: United States of America | B: Bus | | Golden Gate Transit | | | |
| GGTR | | USA: United States of America | B: Bus | | Golden Gate Transit | | | |
| GHAF | | GH: Ghana | Y: Military | | Ghana | | | |
| GHAU | | AUS: Australia | B: Bus | | Greyhound Australia | | | |
| GHCA | | CDN: Canada | B: Bus | | Greyhound Canada | | | |
| GHSA | | USA: United States of America | R: Railway | | Galveston, Harrisburg & San Antonio Railway | | | |
| GIA | | RI: Indonesia | A: Aviation | | Penerbangan Garuda Indonesia | | | |
| GIF | | E: Spain | M: Industry (railway maintenance) | | Gestor de Infraestructuras Ferroviarias | | | |
| GILLIG | | USA: United States of America | T: Type of car, lorry | | | | | |
| GIMPO | | ROK: Korea | C: City traffic | | Gimpo Goldline | | | |
| GINKO | | F: France | C: City traffic | Besancon | | | http://www.ginko.voyage | |
| GJ | | USA: United States of America | R: Railway | | Greenwich & Johnsonville Railway | | | |
| GJDK | GJ | DK: Denmark | R: Railway | | Gjedser Jernbane (Gedserbanen) | 1886 - 1893 | | |
| GJPR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Gorseddau Junction and Portmadoc Railway | The GJ&PR was built in the wake of the successful Ffestiniog Railway and Croesor Tramway to bring slate and metal ores down from the remote Pennant Valley to the quays at Porthmadog, a distance of about 13 miles. It was an expansion of an earlier 3ft gauge line and involved reducing the gauge to 2ft (nom.) in line with its neighbours. It was expected to lead to the expansion of quarrying and mining at the head of the Pennant Valley, but unlike the Blaenau Ffestiniog region, little useful material was found and the quarries and therefore the railway were all spectacularly unsuccessful. The railway was active from 1875 to 1892, and due to the remote country through which it ran most of the trackbed is still intact. | | |
| GJS | | USA: United States of America | S: Street transport company | | Groupe Jules Savard Inc. | | | |
| GJT | | LT: Lithuania | A: Aviation | | GetJet Airlines | | https://en.wikipedia.org/wiki/GetJet_Airlines | |
| GKB | | A: Austria | R: Railway | | Graz-Köflacher Eisenbahn | | | |
| GKW | | PL: Poland | N: Narrow gauge railway | | | | | |
| GL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Green Line coaches | | | |
| GLA | | USA: United States of America | A: Aviation | | Great Lakse Airlines | | https://en.wikipedia.org/wiki/Great_Lakes_Airlines | |
| GLAS | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Glasgow | | | | |
| GLASC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Glasgow Corporation | | | |
| GLBF | | I: Italy | I: Industry (user) | | Globalfer S.p.A. | | | |
| GLC | | USA: United States of America | R: Railway | | Great Lakes Central Railroad | | | |
| GLG | | EC: Ecuador | A: Aviation | | Aerolineas Galapagos S.A. AeroGal | now Avianca Ecuador S.A. | | |
| GLINE | | USA: United States of America | B: Bus | | Gray Line | | | |
| GLIW | | PL: Poland | C: City traffic | | PKM Gliwice | | | |
| GLLA | | US-CA: USA, California | C: City traffic | | Gray Line of Los Angeles | | | |
| GLLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Great Lakes Locomotive L.L.C. | | | |
| GLOBE | | CH: Switzerland | B: Bus | Vernier | Globe Limo SA | | | |
| GLOG | | PL: Poland | C: City traffic | | Komunikacja Miejska Spółka z.o.o. w Głogowie | | https://pl.wikipedia.org/wiki/Komunikacja_Miejska_w_G%C5%82ogowie | |
| GLSF | | USA: United States of America | B: Bus | | Gray Line San Francisco | | | |
| GLT | | S: Sweden | R: Railway | | Göteborgsregionens Lokaltrafik | | | |
| GLX | GXY, J7 | J: Japan | A: Aviation | | Galaxy Airlines | | | |
| GMB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Manchester | GM Buses | | | |
| GMBL | | US-CA: USA, California | C: City traffic | | Gardena Municipal Bus Lines | | | |
| GMBN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Manchester | GM Buses North | | | |
| GMBS | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Greater Manchester Buses South Ltd. | | | |
| GMC | | USA: United States of America | T: Type of car, lorry | | General Motors Corp. | | | |
| GME | GET | D: Germany | R: Railway | | Georgsmarienhütten-Eisenbahn und Transport GmbH | | | |
| GMI | | D: Germany | A: Aviation | | Germania Airline | | https://en.wikipedia.org/wiki/Germania_(airline) | |
| GMN | | USA: United States of America | R: Railway | | Gulf, Mobile & Northern Railroad | | | |
| GMO | | USA: United States of America | R: Railway | | Gulf, Mobil & Ohio Railroad | | | |
| GMRC | | USA: United States of America | R: Railway | | Green Mountain R.R. Corp. | | | |
| GMRY | | USA: United States of America | R: Railway | | Great Miami & Scioto Railway | | | |
| GMTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | GATX Rail Locomotive Group | | | |
| GMUN | | A: Austria | C: City traffic | Gmünden | | | | |
| GN | | USA: United States of America | R: Railway | | Great Northern | | | |
| GNER | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Great North Eastern Railway Ltd. | 1999: 1472km standard gauge, electrified at 25kV 50Hz. Great North Eastern Railway (GNER) is a British train operating company, owned by Sea Containers Ltd. They operate high-speed express train services on the East Coast Main Line. Most of their trains run between London King's Cross and either Edinburgh Waverley or Leeds. | http://www.gner.co.uk/ | |
| GNF | | I: Italy | A: Aviation | | Gandalf Airlines | | https://en.wikipedia.org/wiki/Gandalf_Airlines | |
| GNIEZNO | | PL: Poland | B: Bus | | MPK Gniezno | | | |
| GNR | | AUS: Australia | R: Railway | | Great Northern Railway | | | |
| GNRS | | AUS: Australia | R: Railway | | Great Northern Rail Services | GNRS is now known as Southern Shorthaul Railroad | | |
| GNW | | USA: United States of America | R: Railway | | Genesee & Wyoming R.R. | | | |
| GO | | E: Spain | M: Industry (railway maintenance) | | G&O: Guinovart & Oshsa | | | |
| GOAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Go Ahead London | | | |
| GOB | | CH: Switzerland | R: Railway | | Gotthardbahn | | | |
| GOBUE | | EST: Estonia | B: Bus | | AS GoBus | | https://et.wikipedia.org/wiki/GoBus | |
| GOBUS | | NZ: New Zealand | B: Bus | | Go Bus Transport Ltd | | | |
| GOE | | D: Germany | R: Railway | | Großherzoglich Oldenburgische Eisenbahn | | | |
| GONE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Newcastle Upon Tyne | Go North East | | | |
| GONX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Railgon Co. | | | |
| GOPPEL | | D: Germany | T: Type of car, lorry | | Göppel Bus GmbH | | https://de.wikipedia.org/wiki/G%C3%B6ppel_Bus | |
| GOR | | EST: Estonia | R: Railway | | GO Rail | | | |
| GORIDE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | GoRide Community Interest Company | | | |
| GORZOW | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Gorzowie Wielkopolskim | | | |
| GOSL | | D: Germany | C: City traffic | Goslar | Stadtbus Goslar GmbH | | | |
| GOST | | PL: Poland | B: Bus | | PKS Gostynin | | | |
| GOT | | CDN: Canada | R: Railway | | Government of Ontario (GO) Transit | Greater Toronto Transit Authority | | |
| GOTHA | | D: Germany | C: City traffic | Gotha | | | | |
| GOU | | NL: Netherlands | C: City traffic | Gouda | | | | |
| GOVB | GÖVB | D: Germany | C: City traffic | Görlitz | Göttinger Verkehrsbetriebe GmbH | | https://de.wikipedia.org/wiki/G%C3%B6ttinger_Verkehrsbetriebe | |
| GPAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Grant Palmer | | | |
| GPR | | RO: Romania | RO: Railway operator | | GP Rail Cargo | | | |
| GPSX | | USA: United States of America | I: Industry (user) | | Georgia-Pacific Corp. | | | |
| GPTBEL | | RUS: Russia | C: City traffic | | Gorodskoy Passazhirsoy Transport Belgorod | | | |
| GRAN | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Greater Anglia | | http://www.greateranglia.co.uk/ | |
| GRAY | | CDN: Canada | B: Bus | | Gray Coach Lines | | | |
| GRC | | GH: Ghana | R: Railway | | Ghana Railway Corporation | | | |
| GREA | GR | USA: United States of America | R: Railway | | Grand Rapids Eastern | | | |
| GREN | TAG | F: France | C: City traffic | Grenoble | | | | |
| GREU | | CH: Switzerland | M: Industry (railway maintenance) | | Greuter AG | | | |
| GREYH | | USA: United States of America | B: Bus | | Greyhound | | | |
| GRG | | FAN: Fantasy | R: Railway | | Global Rail Groupe | | | |
| GRIMCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Grimsby Corporation Transport | | | |
| GRIRO | | RO: Romania | R: Railway | | GRIRO S.A. | | | |
| GRIV | | RO: Romania | M: Industry (railway maintenance) | | Grivita workshop | | | |
| GRLA | | USA: United States of America | B: Bus | | Greenville & Lafayette IBOA | | | |
| GRN | | USA: United States of America | R: Railway | | Greenville & Northern Ry. Co., Inc. | | | |
| GRO | | MEX: Mexico | A: Aviation | | Lineas Aéreas Allegro | | https://en.wikipedia.org/wiki/Lineas_Aereas_Allegro | |
| GROD | | PL: Poland | B: Bus | | PKS Grodzisk Mazowiecki | | | |
| GRODNO | | BY: Belarus | C: City traffic | Grodno | | | | |
| GROEGER | | D: Germany | B: Bus | | Groeger Reisen GmbH | | | |
| GROG | | D: Germany | B: Bus | | GR Omnibus GmbH | | | |
| GROV | | USA: United States of America | R: Railway | | S.J. Groves & Sons | | | |
| GRPT | | CG: Montenegro | B: Bus | | Grande Prairie Transit | | | |
| GRPX | | USA: United States of America | I: Industry (user) | | General Chemical (Soda Ash) Partners | | | |
| GRR | | USA: United States of America | R: Railway | | Georgetown Railroad Company | | | |
| GRRT | | CDN: Canada | B: Bus | | Grand River Transit | | | |
| GRS | | USA: United States of America | R: Railway | | Guilford Rail System | Pan Am Railways | | |
| GRST | | A: Austria | T: Type of car, lorry | | Gräf & Stift | since 2002 subsidiary of MAN | | |
| GRT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Grampian Regional Transport | | | |
| GRTC | | USA: United States of America | C: City traffic | Richmond (VA) | Greater Richmond Transit Company | | Greater Richmond Transit Company | |
| GRUD | MZKG | PL: Poland | C: City traffic | Grudziadz | Miejski Zaklad Komunikacji w Grudziadzu | | | |
| GRUM | | USA: United States of America | F: Industry (manufacturer) | | Grumman | | | |
| GRYF | | PL: Poland | B: Bus | | Przewozy Autobusowe Gryf | | www.pksgryfice.com.pl/ | |
| GRYFK | | PL: Poland | B: Bus | | Przewozy Autobusowe Gryf sp. z o.o. | | | |
| GRYGLAS | | PL: Poland | O: Organisation | | Auto-Szkola Gryglas | | | |
| GSAB | | S: Sweden | C: City traffic | Göteborg | Göteborgs Spårvägar | | | |
| GSAND | | BG: Bulgaria | B: Bus | | Travel: Golden Sands | | | |
| GSCW | | US-NJ: USA, New Jersey | B: Bus | | Garden State Coachways | | | |
| GSCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | GATX Capital Corporation | | | |
| GSE | | RU: Burundi | RO: Railway operator | | Grand Service Express | | | |
| GSG | | A: Austria | R: Railway | | Grazer Schleppbahn Gesellschaft | | | |
| GSJ | | S: Sweden | ??? | | | | | |
| GSM | | NL: Netherlands | B: Bus | | GSM | | | |
| GSR | | AUS: Australia | R: Railway | | Great Southern Railway | | | |
| GSRC | | PRC: China | R: Railway | | Guangshen Railway | | | |
| GSS | | NL: Netherlands | B: Bus | | GSMSTAD | | | |
| GSTL | | US-NJ: USA, New Jersey | B: Bus | | Garden State Transit Lines | | | |
| GSW | | CH: Switzerland | A: Aviation | | Germania Flug | | https://en.wikipedia.org/wiki/Chair_Airlines | |
| GSWR | | USA: United States of America | R: Railway | | Georgia Southwestern | | | |
| GSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Mather Stock Car Co. | | | |
| GT | | USA: United States of America | R: Railway | | Grand Trunk Ry. | | | |
| GTAX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Grain Terminal Association | | | |
| GTB | | CH: Switzerland | M: Industry (railway maintenance) | | Gleis- und Tiefbau AG | | | |
| GTF | | RO: Romania | R: Railway | | Grup Transport Feroviar | | | |
| GTPLO | | BG: Bulgaria | C: City traffic | Plovdiv | Gradski Transport Plovdiv | | https://en.wikipedia.org/wiki/Trolleybuses_in_Plovdiv | |
| GTRA | | USA: United States of America | R: Railway | | Golden Triangle R.R. | | | |
| GTRM | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | | ~Sorin Oprisan | | |
| GTS | | I: Italy | R: Railway | | GTS - General Transport Service S.p.A | | | |
| GTT | | I: Italy | R: Railway | | Gruppo Trasporti Torinesi | | | |
| GTU | | NL: Netherlands | ??? | | Gemeente Tram Utrecht / Municipal Tramway Utrecht | | | |
| GTW | | CDN: Canada | R: Railway | | Grand Trunk Western Railroad | | | |
| GU | | USA: United States of America | R: Railway | | Grafton and Upton Railroad | | | |
| GUA | | MEX: Mexico | C: City traffic | Guadalajara | | | | |
| GUANG | | PRC: China | C: City traffic | | Guangzhou Metro | | | |
| GUB | | S: Sweden | C: City traffic | Uppsala | Gamla Uppsala Buss AB | | https://sv.wikipedia.org/wiki/Gamla_Uppsala_Buss | |
| GUDC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Gelligaer Urban District Council | | | |
| GUIN | | IRL: Republic of Ireland | N: Narrow gauge railway | | Guinness Tramway | | | |
| GURK | | A: Austria | N: Narrow gauge railway | | Gurkthalbahn | | | |
| GUT | SWG | D: Germany | C: City traffic | Gütersloh | Stadtwerke Gütersloh GmbH | | | |
| GUTB | GTB | CH: Switzerland | R: Railway | | Gürbetalbahn | | | |
| GV | | NL: Netherlands | B: Bus | | GVBG | | | |
| GVA | | NL: Netherlands | B: Bus | | | | | |
| GVB | | A: Austria | C: City traffic | Graz | | | | |
| GVBA | | NL: Netherlands | B: Bus | | | | | |
| GVG | | D: Germany | ??? | | Georg Verkehrs GmbH | | | |
| GVGA | GVG | D: Germany | B: Bus | Rodewisch | Göltzschtal-Verkehr GmbH | | http://www.goeltzschtal-reisen.de/ | |
| GVSR | | USA: United States of America | R: Railway | | Galveston Railroad | | | |
| GVU | | NL: Netherlands | B: Bus | Utrecht | Gemeente vervoerbedrijf Utrecht | | | |
| GW | GWR | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Great Western Railway | The Great Western Railway (GWR) was a British railway company and a marvel of civil engineering, linking South West England, the West Country and South Wales with London. It was founded in 1833, kept its identity through the 1923 grouping, and became part of British Railways at nationalisation in 1948. Known admiringly to some as "God's Wonderful Railway", jocularly to others as the "Great Way Round" (some of its earliest routes were not the most direct), and by some as the "Goes When Ready" due to the casual way in which some of its branch lines were run, it gained great fame as the "Holiday Railway", taking huge numbers of people to resorts in the southwest. | http://en.wikipedia.org/wiki/Great_Western_Railway | |
| GWA | | AUS: Australia | R: Railway | | Genesee & Wyoming Australia | | | |
| GWF | | USA: United States of America | R: Railway | | Galveston Wharves | | | |
| GWI | | D: Germany | A: Aviation | | Germanwings | | https://en.wikipedia.org/wiki/Germanwings | |
| GWIX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | GWI Leasing Corporation | | | |
| GWR | | USA: United States of America | R: Railway | | Great Western | | | |
| GWS | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Golden West Service | | | |
| GWTR | | CZ: Czech Republic | R: Railway | | GW Train | | | |
| GWWD | | CDN: Canada | R: Railway | | Greater Winnipeg Water District | | | |
| GWWR | | USA: United States of America | R: Railway | | Gateway Western Ry. | | | |
| GX | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Gatwick Express Ltd. | 1999: 43km standard gauge, electrified at 750V= 3rd rail~ | | |
| GY | | H: Hungary | R: Railway | | GySEV/ROeEE | | | |
| GYC | | H: Hungary | RO: Railway operator | | GySEV Cargo | | | |
| GYON | H-MAEV | H: Hungary | N: Narrow gauge railway | | Gyöngyösi kisvasút | | | |
| GYV | | H: Hungary | N: Narrow gauge railway | | Gyermekvasút (Children's Railway) | | | |
| H | | H: Hungary | ??? | | Hungary | | | |
| H0 | | ??? | Z: Scale | | 1:87 | | | |
| HA | | ??? | Z: Scale | | Nan Demo Hashiru | | | |
| HAAG | HTM | NL: Netherlands | C: City traffic | Den Haag | Haagse Tramweg Maatschappij | | www.htm.net | |
| HAARGAZ | | IL: Israel | T: Type of car, lorry | | Haargaz Group | | | |
| HABA | SWO | D: Germany | RO: Railway operator | | Stadtwerke Osnabrück AG (Hafenbahn Osnabrück) | | | |
| HAC | NTH, 6L | J: Japan | A: Aviation | | Hokkaido Air System | | | |
| HACK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Hackney Community Transport | | | |
| HADER | | D: Germany | B: Bus | | Hadersdorfer Reisen GmbH | | https://www.hadersdorfer-reisen.de/ | |
| HAEI | | USA: United States of America | S: Street transport company | | Heartland Express | | | |
| HAGEN | HST | D: Germany | C: City traffic | Hagen | Hagener Straßenbahn AG | | | |
| HAJ | | H: Hungary | B: Bus | | Hajdú Volán | | | |
| HAJD | HAJ | DK: Denmark | R: Railway | | Haderslev Amts Jernbaner | 1899 - 1939 | | |
| HAJM | HAJ | DK: Denmark | R: Railway | | Hammel - Århus Jernbane (Hammelbanen) | 1902 - 1914 | | |
| HAL | | USA: United States of America | A: Aviation | | Hawaiian Airlines | | | |
| HALICT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Halifax Corporation Transport | | | |
| HALM | | CDN: Canada | C: City traffic | | Halifax Metro Transit | | | |
| HALTON | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Halton Transport | | https://en.wikipedia.org/wiki/Halton_Transport | |
| HAML | | US-NJ: USA, New Jersey | B: Bus | New Brunswick | HAML Corp | | | |
| HAMM | | D: Germany | C: City traffic | Hamm | Stadtwerke Hamm | | | |
| HAN | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Hanson Aggregates UK | | | |
| HANG | | CH: Switzerland | S: Street transport company | | Hangartner AG. | | | |
| HANKAI | | J: Japan | C: City traffic | Osaka, Sakai | Hankai Tramway Co. | | | |
| HANS | | D: Germany | R: Railway | | Hanseatische Eisenbahn-Gesellschaft | | https://de.wikipedia.org/wiki/Hanseatische_Eisenbahn | |
| HARRIS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Harris Bus | | | |
| HART | | USA: United States of America | C: City traffic | | Huntington Area Rapid Transit | | | |
| HARTON | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | Harton Coal Company | | | |
| HATO | | J: Japan | B: Bus | | Hato Bus Co., Ltd | Hato Bus Co., Ltd is a sightseeing bus company in Japan, based in Heiwajima, Ohta-ku, Tokyo. | en.wikipedia.org/wiki/Hato_Bus | |
| HATVAN | | H: Hungary | B: Bus | | Hatvani Volán | | | |
| HATX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Helm Financial Corporation | | | |
| HAVEN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Haven Bus | | | |
| HAY | | D: Germany | A: Aviation | | Hamburg Airways | | https://en.wikipedia.org/wiki/Hamburg_Airways | |
| HB | | DK: Denmark | R: Railway | | Hirtshalsbanen | 1925 - 1945 | | |
| HBB | | D: Germany | B: Bus | Halberstadt | | | | |
| HBC | | USA: United States of America | I: Industry (user) | | Hamm Brewing Company | | | |
| HBE | | D: Germany | R: Railway | | Halberstadt-Blankenburger Eisenbahn | | | |
| HBJ | | DK: Denmark | R: Railway | | Horsens - Bryrup Jernbane | 1899 - 1929 | | |
| HBM | | D: Germany | I: Industry (user) | | Hafenbahn Mülheim | | | |
| HBRY | | USA: United States of America | R: Railway | | Hudson Bay Railway Company (Omnitrax) | | | |
| HBS | | USA: United States of America | R: Railway | | Hoboken Shore R.R. | | | |
| HBSD | HBS | DK: Denmark | R: Railway | | Horsens - Bryrup - Silkeborg (Bryrupbanen) | 1929 - 1968 | | |
| HBT | | USA: United States of America | R: Railway | | Houston Belt and Terminal Railway | | | |
| HCBC | | J: Japan | B: Bus | | Hokkaido Chuo Bus Co., Ltd. | | https://en.wikipedia.org/wiki/Hokkaido_Chuo_Bus | |
| HCP | | PL: Poland | F: Industry (manufacturer) | Poznan | H. Cegielski Fabryka Pojazdów Szynowych | | | |
| HCR | | D: Germany | C: City traffic | Castrop-Rauxel | Straßenbahn Herne Castrop-Rauxel GmbH | | | |
| HCRR | | USA: United States of America | R: Railway | | Honey Creek Railroad Inc. | | | |
| HCRY | | CDN: Canada | R: Railway | | Huron Central Railway | | | |
| HCSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Helm Chesapeake Limited Partnership | | | |
| HCV | | D: Germany | B: Bus | Hamburg | Hamburg City Vision | Sightseeing | https://www.hamburg-stadtrundfahrten.com/ | |
| HDA | | HK: Hong Kong | A: Aviation | | Dragonair | | | |
| HDM | | US-NY: USA, New York | C: City traffic | | Hudson & Manhattan | | | |
| HE | | USA: United States of America | R: Railway | | Hollis & Eastern R.R. Co. | | | |
| HEAG | | D: Germany | C: City traffic | Darmstadt | Hessische Elektrizitäts AG | | | |
| HEBBEL | | D: Germany | B: Bus | Leverkusen | Hebbel Busbetrieb GmbH | | | |
| HEC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Heathrow Connect | Heathrow Connect is a train service in London, connecting Heathrow Airport with Paddington station. It is a joint venture between First Great Western and BAA. The service follows the same route as the faster Heathrow Express service but serves intermediate stations on its route, thus connecting several locations in west London with each other, the airport, and central London. | http://www.heathrowconnect.com/ | |
| HECT | HCTOR | S: Sweden | R: Railway | | Hector Rail AB | 2004 - | | |
| HEEX | HEX | D: Germany | R: Railway | | HarzElbeExpress | | | |
| HEG | | D: Germany | R: Railway | | Hersfelder Eisenbahn Gesellschaft mbH | | | |
| HEGY | | H: Hungary | N: Narrow gauge railway | | Hegyközi kisvasút | | | |
| HEI | | J: Japan | R: Railway | | Heisei Chikuho Railway (Heichiku) | | | |
| HEID | | D: Germany | C: City traffic | Heidelberg | Heidelberger Straßen und Bergbahn AG. | | | |
| HEIT | | D: Germany | M: Industry (railway maintenance) | | Heitkamp Rail | | | |
| HEL | | GR: Greece | RO: Railway operator | | Hellenic Train S.A. | | https://en.wikipedia.org/wiki/Hellenic_Train | |
| HELR | | D: Germany | RO: Railway operator | | Helrom GmbH | | helrom.com | |
| HELS | | FIN: Finland | C: City traffic | Helsinki | | | | |
| HEMP | | USA: United States of America | B: Bus | | Hempstead Transit | | | |
| HEN | | D: Germany | F: Industry (manufacturer) | | Henschel | | | |
| HENKEL | | D: Germany | I: Industry (user) | | Henkel | | | |
| HENZAGO | | PL: Poland | B: Bus | Ruda Śląska | Prywatne Przedsiębiorstwo Usługowo-Produkcyjne Henryk Zagozda / Henzago Sp. z o.o. | | | |
| HERA | | PF: French Polynesia | R: Railway | | Compagnie des chemins de fer d’intérêt local du département de l’Hérault | | https://fr.wikipedia.org/wiki/Chemins_de_fer_de_l%27H%C3%A9rault | |
| HERF | | D: Germany | N: Narrow gauge railway | | Herforder Kleinbahn | | | |
| HERING | | D: Germany | M: Industry (railway maintenance) | | HERING Gleisbau | | | |
| HERLI | | D: Germany | B: Bus | | Herlitschka Busreisen | | | |
| HERMES | | NL: Netherlands | RT: Regional transport company | | Hermes Groep NV | Owned by Connexxion | https://nl.wikipedia.org/wiki/Hermes_(vervoerbedrijf) | |
| HERMS | | D: Germany | B: Bus | | Harmsdorf Reisen | | | |
| HEROS | | CH: Switzerland | P: Pool (Leasing / wagon pool) | | Helvetia Rolling Stock GmbH | | | |
| HERTZ | | USA: United States of America | P: Pool (Leasing / wagon pool) | | | | | |
| HERX | | USA: United States of America | I: Industry (user) | | Hershey Chocolate Co. | | | |
| HES | | D: Germany | I: Industry (user) | | Hennigsdorfer Elektrostahlwerk GmbH | | | |
| HESF | | D: Germany | V: Museum | | Hammer Eisenbahnfreunde e. V. + Museumseisenbahn Hamm e. V | | http://www.museumseisenbahn-hamm.de/ | |
| HESS | | CH: Switzerland | T: Type of car, lorry | | Carrosserie HESS AG | | https://en.wikipedia.org/wiki/Carrosserie_Hess | |
| HEX | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Heathrow Express Operating Authority | Heathrow Express is a train service from Heathrow Airport to Paddington in central London operated by the Heathrow Express Operating Authority - a wholly-owned subsidiary of BAA. The service is not part of the National Rail system, despite part of its journey sharing track with National Rail trains and terminating at a London mainline station.http://www.heathrowexpress.com/ | http://www.heathrowexpress.com/ | |
| HFAX | | CDN: Canada | C: City traffic | | Halifax Transit | | https://www.halifax.ca/transportation/halifax-transit | |
| HFHJ | | DK: Denmark | R: Railway | | Hillerød - Frederiksværk - Hundested Jernbane (Frederiksværkbanen) | 1943 - 2001 | | |
| HFJ | | DK: Denmark | R: Railway | | Hillerød - Frederiksværk Jernbane (Frederiksværkbanen) | 1897 - 1943 | | |
| HGB | | D: Germany | R: Railway | | Hessische Güterbahn GmbH | | http://www.hgb-online.com/ | |
| HGF | | H: Hungary | Y: Military | | Hungarian Ground Forces | | | |
| HGK | | D: Germany | R: Railway | | Häfen und Güterverkehr Köln AG | | www.hgk.de/ | |
| HGW | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | Harrogate Gas Works | | | |
| HH | | D: Germany | C: City traffic | Hamburg | | | | |
| HHA | | D: Germany | C: City traffic | Hamburg | Hamburger Hochbahn AG | | https://en.wikipedia.org/wiki/Hamburger_Hochbahn | |
| HHB | | DK: Denmark | R: Railway | | Helsingør - Hornbæk Banen (Hornbækbanen) | 1906 - 1916 | | |
| HHDK | HH | DK: Denmark | R: Railway | | Hjørring - Hørby | 1913 - 1953 | | |
| HHEART | | J: Japan | B: Bus | | Hokkaido Heart Bus | | http://heartbus.net/ | |
| HHGB | | DK: Denmark | R: Railway | | Helsingør - Hornbæk - Gilleleje Banen (Hornbækbanen) | 1916 - 2001 | | |
| HHJ | | DK: Denmark | R: Railway | | Hads-Ning Herreders Jernbane (Odderbanen) | 1884 - 2008 | www.odderbanen.dk/ | |
| HHOV | | D: Germany | V: Museum | | Hamburger Omnibus Verein | | | |
| HHPI | | D: Germany | R: Railway | | Heavy Haul Power International | | www.hhpi.org/ | |
| HHRS | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Hanson & Hall Rail Services Solutions Ltd. | | | |
| HI | | AUS: Australia | I: Industry (user) | | Hammersley Iron | | | |
| HICX | | USA: United States of America | R: Railway | | Huntsville International Intermodal Center | | | |
| HILLSIDE | | USA: United States of America | B: Bus | | 22 Hillside | | | |
| HINO | | J: Japan | T: Type of car, lorry | | Hino | | | |
| HIRO | | J: Japan | C: City traffic | Hiroshima | | | | |
| HIROD | | J: Japan | C: City traffic | | Hiroshima Electric Railway | | | |
| HIROS | | J: Japan | C: City traffic | Hiroshima | | | | |
| HISP | | E: Spain | T: Type of car, lorry | | Hispano Carrocera, S.A. | | https://en.wikipedia.org/wiki/Tata_Hispano | |
| HITS | | J: Japan | R: Railway | | Hitachinaka Railway | | | |
| HJA | | DK: Denmark | R: Railway | | Hjørring - Ålbæk | 1925 | | |
| HJH | | USA: United States of America | I: Industry (user) | | H.J.Heinz Company | | | |
| HJIT | | USA: United States of America | B: Bus | Southampton, NY | Hampton Jitney | | https://en.wikipedia.org/wiki/Hampton_Jitney | |
| HJJ | | DK: Denmark | R: Railway | | Horsens - Juelsminde Jernbane (Juelsmindebanen) | 1884 - 1957 | | |
| HK | | HK: Hong Kong | C: City traffic | Hong Kong | other transit systems | | | |
| HKAG | | CH: Switzerland | I: Industry (user) | | Hastag Kies AG | | | |
| HKB | | D: Germany | R: Railway | | Hersfelder Kreisbahn | | | |
| HKCB | | HK: Hong Kong | C: City traffic | | Citybus Limited | | | |
| HKCF | | HK: Hong Kong | B: Bus | | Hong Kong Cityflyer | | | |
| HKE | | HK: Hong Kong | A: Aviation | | Hong Kong Express | | | |
| HKGX | | USA: United States of America | R: Railway | | Haines & Kibblehouse Inc | | | |
| HKHA | | HK: Hong Kong | O: Organisation | | Hong Kong Hospital Authority | | | |
| HKMTR | | HK: Hong Kong | B: Bus | | MTR Corporation | | | |
| HKNANNY | | HK: Hong Kong | B: Bus | Hong Kong | School private bus service | | https://en.wikipedia.org/wiki/Nanny_van | |
| HKONG | | ??? | ??? | | | | | |
| HKREHA | | HK: Hong Kong | O: Organisation | | The Hong Kong Society for Rehabilitation | | | |
| HKYU | | J: Japan | R: Railway | | Hankyu Railway | Hankyu Railway (Hankyu- Dentetsu) is a Japanese private railway that provides commuter and interurban service to the northern Kansai region. Its main terminal is at Umeda Station in Osaka. The signature color of Hankyu cars is maroon. | http://rail.hankyu.co.jp/ | |
| HKZTS | | PL: Poland | A: Aviation | | Huta Katowice Zakład Transportu Samochodowego sp. z o.o. | | | |
| HLA | | DK: Denmark | R: Railway | | Hjørring - Løkken - Åbybro | 1913 - 1969 | | |
| HLB | | D: Germany | RO: Railway operator | | Hessische Landesbahn GmbH | | | |
| HLCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Helm Financial Corporation | | | |
| HLO | | SK: Slovakia | C: City traffic | Hlohovec | | | | |
| HLQ | | J: Japan | A: Aviation | | Harlequin Air | | | |
| HMAF | | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | British Armed Forces | Her Majesty's Armed Forces | | |
| HMET | | US-TX: USA, Texas | C: City traffic | Houston | Metropolitan Transit Authority of Harris County | | https://en.wikipedia.org/wiki/Metropolitan_Transit_Authority_of_Harris_County | |
| HMFX | | USA: United States of America | I: Industry (user) | | Century Industries | | | |
| HMINT | | J: Japan | B: Bus | | Hokkaido Mint Bus | Charter service only | | |
| HMS | | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | Royal (british) Navy | | | |
| HNA | | USA: United States of America | A: Aviation | | Henson Airlines | | https://en.wikipedia.org/wiki/Piedmont_Airlines | |
| HNJ | | S: Sweden | R: Railway | | Halmstad - Nässjö Järnväg | 1877 - 1945 | | |
| HNLMS | | NL: Netherlands | Y: Military | | Her Dutch Majesty's Ship | | | |
| HNOMS | | N: Norway | Y: Military | | Royal Norwegian Navy | | | |
| HNRC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Harry Needle Railroad Company | | | |
| HO | | NL: Netherlands | ??? | | Hoogovens (Corus) | | | |
| HOB | | USA: United States of America | B: Bus | | Hoboken Transportation | | | |
| HOBBY | | X: Global | TOY: Toy, modell | | Hobbytrain | | | |
| HODM | | H: Hungary | B: Bus | Hódmezõvásárhely | Hód-Mez? | | | |
| HOG | | USA: United States of America | R: Railway | | Heart of Georgia | | | |
| HOJ | | DK: Denmark | R: Railway | | Horsens - Odder Jernbane | 1904 - 1967 | | |
| HOJO | | J: Japan | R: Railway | | Hojo Railway Company | | http://www.hojorailway.jp/ | |
| HOK | | J: Japan | R: Railway | | Hokuetsu Express Co., Ltd. | | http://hokuhoku-line.jp | |
| HOKKB | | J: Japan | B: Bus | | Hokkaido Bus Co. | | http://www.hokkaidoubus-newstar.jp/ | |
| HOKKO | | J: Japan | B: Bus | | Hokko Kanko Bus | | | |
| HOKS | | J: Japan | R: Railway | | Hokuso Railway | | https://en.wikipedia.org/wiki/Hokus%C5%8D_Line | |
| HOKU | | J: Japan | R: Railway | | Hokuetsu | | | |
| HOKX | | USA: United States of America | I: Industry (user) | | Occidental Chemical Corporation | | | |
| HOLB | | CDN: Canada | B: Bus | | Hollinger Bus Lines | | | |
| HOLCH | | CH: Switzerland | I: Industry (user) | | Holcim (Schweiz) AG | | holcim.ch | |
| HOLW | | US-NJ: USA, New Jersey | B: Bus | | Holloway Bus Service | | | |
| HONIG | | D: Germany | B: Bus | | Verkehrsbetriebe Höninger GmbH | | https://www.höninger.de/ | |
| HONX | | USA: United States of America | I: Industry (user) | | Honeymead Products Co. | | | |
| HORI | | J: Japan | R: Railway | | Hokuriku Railroad | | | |
| HORNSBY | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Hornsby | Hornsby Travel | | | |
| HORON | | J: Japan | R: Railway | | Horonai Railway | 1869 - | https://en.wikipedia.org/wiki/Horonai_Railway | |
| HOS | | USA: United States of America | R: Railway | | Hoosier Southern Railroad | | | |
| HOUTRAN | | US-TX: USA, Texas | C: City traffic | Houston | Houston Transit Company | | https://en.wikipedia.org/wiki/HouTran | |
| HOX | | USA: United States of America | I: Industry (user) | | Humble Oil & Refining Co. | | | |
| HOY | | D: Germany | S: Street transport company | | Hoyer | | | |
| HOYW | | D: Germany | C: City traffic | Hoyerswerda | | | | |
| HP | | DK: Denmark | R: Railway | | Hjørring Privatbaner | 1939 - 2001 | | |
| HPEAK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | High Peak Buses | | https://en.wikipedia.org/wiki/High_Peak_Buses | |
| HPMR | | USA: United States of America | TOY: Toy, modell | | Highland Pacific | Modell railroad | | |
| HPTD | | USA: United States of America | R: Railway | | High Point, Thomasville & Denton R.R. Co. | | | |
| HRRC | | USA: United States of America | R: Railway | | Housatonic Railroad | | | |
| HRT | | USA: United States of America | R: Railway | | Hartwell Railroad Company | | | |
| HRTA | HSL | FIN: Finland | C: City traffic | | Helsinki Regional Transport Authority | | https://en.wikipedia.org/wiki/Helsinki_Regional_Transport_Authority | |
| HS | | USA: United States of America | R: Railway | | Hartford and Slocomb R.R. Co. | | | |
| HSAG | | D: Germany | C: City traffic | Heilbronn | Heilbronner Strassenbahn AG | | | |
| HSB | | D: Germany | N: Narrow gauge railway | | Harzer Schmalspurbahnen | | | |
| HSBA | | D: Germany | C: City traffic | Hanau | Hanauer Strassenbahn AG | | | |
| HSBR | | D: Germany | C: City traffic | Heidelberg | | | | |
| HSH | | AL: Albania | R: Railway | | Albanian Railways - Hekurudha e Shqipërisë | | | |
| HSIN | | J: Japan | R: Railway | | Hanshin Electric Railway | | | |
| HSINHO | | RC: Taiwan | B: Bus | Taipei | Hsinho Bus | | | |
| HSL | | D: Germany | RO: Railway operator | | HSL Logistik GmbH | | | |
| HSM | | NL: Netherlands | ??? | | Dutch Iron Railway Company | | | |
| HSOR | | J: Japan | R: Railway | | Hisatsu Orange Railway | | | |
| HSRR | | USA: United States of America | R: Railway | | Hoboken Shore Railroad | | | |
| HSRW | | CDN: Canada | C: City traffic | | Hamilton Street Railway | | | |
| HSS | | S: Sweden | C: City traffic | | | | | |
| HSV | | FAN: Fantasy | O: Organisation | | Hamburger Sportverein | | | |
| HTB | | D: Germany | R: Railway | | Hörseltalbahn, Eisenach | | | |
| HTBC | | J: Japan | B: Bus | | Hokkaido Takushoku Bus Co.,Ltd. | | | |
| HTBD | HTB | DK: Denmark | R: Railway | | Horsens - Tørring Banen (Tørringbanen) | 1891 - 1929 | | |
| HTC | | USA: United States of America | R: Railway | | Houston & Texas Central | | | |
| HTJ | | DK: Denmark | R: Railway | | Høng - Tølløse Jernbane (Tølløsebanen) | 1901 - 2003 | | |
| HUAF | HUF | H: Hungary | Y: Military | | Hungarian Air Force | | | |
| HUBERT | | D: Germany | M: Industry (railway maintenance) | | J. Hubert GmbH | | | |
| HUDCB | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | | | | |
| HUDCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Huddersfield Corporation Transport | | | |
| HUDMAN | | USA: United States of America | C: City traffic | New York | Hudson & Manhattan | | | |
| HUDT | | US-NJ: USA, New Jersey | B: Bus | | Hudson Transit | | | |
| HUKB | | D: Germany | R: Railway | | Hümmlinger Kreisbahn | | | |
| HULL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Hull Trains | Hull Trains is a train operating company in the United Kingdom, running up to six long distance services each day between London Kings Cross and Hull, calling at Grantham, Retford, Doncaster, Selby, Howden and Brough. It is owned by First Group following the buyout of its previous parent company, GB Railways. Hull Trains is one of the three ‘open access’ rail operators in the UK, meaning that instead of owning a franchise and operating a level of service laid down by the Strategic Rail Authority, it applied for, and was awarded in 2002, access rights for 10 years by the Office of the Rail Regulator. | http://www.hulltrains.co.uk/ | |
| HULLCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Hull Corporation Transport | | | |
| HUNC | | H: Hungary | S: Street transport company | | Hungarocamion | | | |
| HUPAC | | CH: Switzerland | RO: Railway operator | | Hupac Intermodal Ltd | | | |
| HUPIT | | I: Italy | R: Railway | | Hupac Italia | | | |
| HUTT | | D: Germany | B: Bus | | Verkehrsbetrieb Hüttebräucker GmbH | | https://www.treffpunkt-bus.de | |
| HV | | DK: Denmark | R: Railway | | Horsens Vestbaner | | | |
| HVAG | HAVAG | D: Germany | C: City traffic | Halle | | | | |
| HVG | | D: Germany | C: City traffic | Halberstadt | Halberstädter Verkehrsgesellschaft | | | |
| HVGP | HVG | D: Germany | B: Bus | Potsdam | | | | |
| HVJ | | DK: Denmark | R: Railway | | Hørve-Værslev Jernbane | 1919 - 1956 | | |
| HVK | | TR: Turkey | Y: Military | | Turkish Air Force (Türk Hava Kuvvetleri) | | https://en.wikipedia.org/wiki/Turkish_Air_Force | |
| HVLE | | D: Germany | R: Railway | | Havelländische Eisenbahngesellschaft AG, Berlin | | | |
| HVN | | VN: Vietnam | A: Aviation | | Vietnam Airlines | | | |
| HVR | HV | USA: United States of America | R: Railway | | Hocking Valley Ry. Co. | | | |
| HVRR | HV | USA: United States of America | R: Railway | | Hocking Valley Railroad Co. | | | |
| HVRX | | USA: United States of America | TU: Touristic railway | | Heber Valley Historic Railroad | | | |
| HWB | | CH: Switzerland | R: Railway | | Huttwil-Wolhusen-Bahn | | | |
| HWBG | HWB | D: Germany | R: Railway | | Hochwaldbahn: HWB Verkehrsgesellschaft mbH | | http://www.hochwaldbahn.de/hwb_verkehr_gmbh.html | |
| HWBV | HWB | D: Germany | ??? | | Hochwaldbahn e.V. | | | |
| HWBZ | HWB | D: Germany | R: Railway | Zittau | Hochwaldbahn | | | |
| HWCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Halliburton Co. | | | |
| HWORMS | | D: Germany | L: Logistics company | | Stadthafen Worms | | | |
| HX | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Heathrow Express | 1999: standard gauge, electrified at 25kV 50Hz. The Heathrow Express service between London Paddington station and Heathrow Airport is operated by BAA plc, the airport authority. From June 1997 trains are operated between Paddington and the entrance of the tunnel under the airport, every 15 minutes. | | |
| HXA | HX | D: Germany | A: Aviation | | Hamburg Airlines | | https://en.wikipedia.org/wiki/Hamburg_Airlines | |
| HZ | | HR: Croatia | ??? | | | | | |
| HZL | | D: Germany | R: Railway | | Hohenzollerische Landesbahn AG | | www.hzl-online.de/ | |
| HZLA | | AUS: Australia | A: Aviation | | Hazelton Airlines | | https://en.wikipedia.org/wiki/Hazelton_Airlines | |
| HZPP | | HR: Croatia | R: Railway | | HŽ Putnički prijevoz | | | |
| HZVB | HVB | D: Germany | B: Bus | | Harzer Verkehrsbetriebe GmbH | | https://hvb-harz.de/ | |
| I | | ??? | ??? | | | | | |
| IAF | | IND: India | YA: Military: Air force | | Indian Air Force | | https://en.wikipedia.org/wiki/Indian_Air_Force | |
| IAFE | | YV: Venezuela | R: Railway | | | | | |
| IAIS | | USA: United States of America | R: Railway | | Iowa Interstate | | | |
| IANR | | USA: United States of America | R: Railway | | Iowa Northern Railway Co. | | | |
| IBAB | | S: Sweden | R: Railway | | Inlandsbanan AB | 1993 - | www.inlandsbanan.se/ | |
| IBB | | E: Spain | A: Aviation | | Binter Canarias | | https://en.wikipedia.org/wiki/Binter_Canarias | |
| IBC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Rainham (Essex) | Imperial Bus Company | | | |
| IBER | | E: Spain | A: Aviation | | Iberia | | | |
| IBT | | USA: United States of America | R: Railway | | International Bridge & Terminal Co. | | | |
| IBX | | J: Japan | A: Aviation | | IBEX Airlines | | | |
| IC | | USA: United States of America | R: Railway | | Illionis Central | | | |
| ICB | | D: Germany | C: City traffic | Frankfurt am Main | In der City Bus GmbH | | | |
| ICBL | | USA: United States of America | B: Bus | | Inter City Lines | | | |
| ICBUS | | D: Germany | B: Bus | | IC Bus | | | |
| ICE | | IS: Iceland | A: Aviation | | Icelandair | | | |
| ICEI | ICE | I: Italy | M: Industry (railway maintenance) | | Impresa di Construzioni Edili | | http://www.icetondo.it/ | |
| ICEM | | I: Italy | I: Industry (user) | | Italcementi | | https://en.wikipedia.org/wiki/Italcementi | |
| ICER | ICE | USA: United States of America | R: Railway | | Iowa, Chicago & Eastern | | | |
| ICG | | USA: United States of America | R: Railway | | Illinois Central Gulf | | | |
| ICHI | | J: Japan | R: Railway | | Ichibata Electric Railway | | http://www.ichibata.co.jp/railway/ | |
| ICIMA | | RO: Romania | M: Industry (railway maintenance) | | ICIM SA Arad | | | |
| ICMC | | USA: United States of America | C: City traffic | | Inter-County Motor Coach | | | |
| IDBUS | | F: France | B: Bus | | iDBUS | an SNCF company | | |
| IDF | | IL: Israel | Y: Military | | Israel Defense Forces | | | |
| IDIV | | PL: Poland | F: Industry (manufacturer) | | Industrial Division | | | |
| IDSC | | CZ: Czech Republic | RO: Railway operator | | IDS CARGO a. s | | ids-cargo.cz | |
| IEAF | | ETH: Ethiopia | YA: Military: Air force | | Imperial Ethiopian Air Force | | https://en.wikipedia.org/wiki/Ethiopian_Air_Force | |
| IETT | | TR: Turkey | C: City traffic | Istanbul | | | | |
| IF | | ??? | ??? | | Interfrigo | | | |
| IFA | | D: Germany | T: Type of car, lorry | | | | | |
| IFB | | B: Belgium | L: Logistics company | | Inter Ferry Boat | B-Cargo subsidiary fournded in 2003. | | |
| IFEA | | UA: Ukraine | C: City traffic | Ivano-Frankivsk | KP Elektroavtotrans Ivano-Frankivsk | | | |
| IFLUG | | DDR: German Democratic Republic | A: Aviation | | Interflug | | | |
| IFRIG | | D: Germany | ??? | | Interfrigo | | | |
| IFRX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Infinity Rail | | | |
| IFS | | USA: United States of America | S: Street transport company | | International Freight Systems | | | |
| IFT | | CZ: Czech Republic | RO: Railway operator | | Interfracht s.r.o. | | interfracht.cz | |
| IGAB | | S: Sweden | R: Railway | | Inlandsgods AB | 2001 - 2007 | | |
| IGB | | D: Germany | R: Railway | | Industriebahngesellschaft mbH (IGB) | | | |
| IGE | | D: Germany | R: Railway | | Internationale Gesellschaft für Eisenbahnverkehr | | | |
| IGL | | PL: Poland | RO: Railway operator | | IGL sp. z o. o. | | | |
| IGLOO | | PL: Poland | I: Industry (user) | Dębica | Agro-industrial works Igloopol | | https://en.wikipedia.org/wiki/Trolleybuses_in_D%C4%99bica | |
| IGN | | USA: United States of America | R: Railway | | International-Great Northern R.R. | | | |
| IGO | | IND: India | A: Aviation | | IndiGo: InterGlobe Aviation Limited | | https://en.wikipedia.org/wiki/IndiGo | |
| IGR | | J: Japan | R: Railway | | Iwate Galaxy Railway Company | | http://www.igr.jp/ | |
| IHB | | USA: United States of America | R: Railway | | Indiana Harbor Belt | | | |
| IHC | | USA: United States of America | T: Type of car, lorry | | International Harvester | | | |
| IHCX | | USA: United States of America | I: Industry (user) | | International Harvester Co. | | | |
| IHO | | EAK: Kenya | A: Aviation | | 748 Air Services | | https://en.wikipedia.org/wiki/748_Air_Services | |
| IHRC | | USA: United States of America | R: Railway | | Indiana Hi-Rail Corp. | | | |
| IIAF | | IR: Iran | Y: Military | | Imperial Iranian Air Force | | | |
| IJA | | J: Japan | Y: Military | | Imperial Japan Army | | | |
| IJN | | J: Japan | Y: Military | | Imperial Japan Navy | | | |
| IK | | H: Hungary | T: Type of car, lorry | | Ikarusz | | | |
| IKAG | | D: Germany | C: City traffic | Iserlohn | Iserlohner Kreisbahn AG | | https://de.wikipedia.org/wiki/Iserlohner_Kreisbahn | |
| IKASA | | J: Japan | R: Railway | | Ikasa Railway | Railway operation cancelled, now a bus company. | http://ja.wikipedia.org/wiki/%E4%BA%95%E7%AC%A0%E9%89%84%E9%81%93 | |
| IKB | | YU: Yugoslavia | F: Industry (manufacturer) | | Ikarbus | | | |
| IKM | | GH: Ghana | A: Aviation | | Aero Surveys Limited (Starbow Airlines) | | https://en.wikipedia.org/wiki/Starbow | |
| IL | | NL: Netherlands | B: Bus | | Interliner | | | |
| ILAF | | IL: Israel | Y: Military | | Israeli Air Force | | | |
| ILDX | | USA: United States of America | I: Industry (user) | | General Electric Co. Lighting Business Group | | | |
| ILL | | USA: United States of America | R: Railway | | | | | |
| ILM | | D: Germany | R: Railway | | Ilmebahn GmbH | | www.ilmebahn.de/ | |
| ILSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Independent Locomotive Service, Inc. | | | |
| ILVA | | I: Italy | I: Industry (user) | | Ilva di Taranto Steel Works | | | |
| IMAF | | I: Italy | M: Industry (railway maintenance) | | IM.A.F. Costruzioni | | | |
| IMCX | | USA: United States of America | I: Industry (user) | | IMC Global Operations, Inc. | | | |
| IMM | | I: Italy | Y: Military | | Marina Militare (Italian Navy) | | | |
| IMO | | D: Germany | R: Railway | | ImoTrans GmbH | Die Gesellschaft wurde im Jahr 2006 auf PE Cargo verschmolzen | http://www.imotrans.de/ | |
| IMPR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Romford | Imperial | | | |
| IMRL | | USA: United States of America | R: Railway | | I & M Rail Link, LLC | | | |
| IMRR | | USA: United States of America | R: Railway | | Illinois and Midland | | | |
| IMSE | | I: Italy | M: Industry (railway maintenance) | | Impresa Salvatore Esposito | | | |
| IMV | | YU: Yugoslavia | F: Industry (manufacturer) | | Industrija motornih vozil | | | |
| IN | | USA: United States of America | R: Railway | | Illinois Northern R.R. Co. | | | |
| INA | | IND: India | Y: Military | | Indian Army | | | |
| INCX | | USA: United States of America | R: Railway | | Inco Ltd. | | | |
| INFR | ILIS | D: Germany | R: Railway | | Infraleuna | | www.logistik.leuna.de/ | |
| INFRA | | D: Germany | C: City traffic | Fürth | infra fürth gmbh | | https://de.wikipedia.org/wiki/Infra_F%C3%BCrth | |
| INPR | | USA: United States of America | R: Railway | | Idaho Northern and Pacific Railroad Company | | http://www.rgpc.com/inprgeneralinformation.htm | |
| INR | | IND: India | R: Railway | | | | | |
| INRAIL | | I: Italy | RO: Railway operator | | INRAIL | | inrail.it | |
| INRD | | USA: United States of America | R: Railway | | The Indiana Rail Road Co. | | | |
| INSB | IVB | A: Austria | C: City traffic | Innsbruck | | | | |
| INT | | USA: United States of America | R: Railway | | Interstate Railroad | | | |
| INTER | | BG: Bulgaria | R: Railway | | Interkom EOOD | | | |
| INTR | | AUS: Australia | R: Railway | | INTERAIL | | | |
| IORY | | USA: United States of America | R: Railway | | Indiana & Ohio Railway Company | | | |
| IPA | | I: Italy | M: Industry (railway maintenance) | | IPA Ferroviaria S.p.a. | | | |
| IPELC | | I: Italy | M: Industry (railway maintenance) | | IPE Locomotori 2000 SRL | | | |
| IPFX | | USA: United States of America | R: Railway | | Iowa Picufuc Fruit Express | | | |
| IQAF | | IRQ: Iraq | YA: Military: Air force | | Iraqi Air Force | | https://en.wikipedia.org/wiki/Iraqi_Air_Force | |
| IR | | IL: Israel | R: Railway | | | | | |
| IRA | | IR: Iran | A: Aviation | | Iran Air | | | |
| IRAIL | | AUS: Australia | R: Railway | | Independent Railways of Australia Pts. | | http://www.independentrail.com.au/ir/ | |
| IRC | | RO: Romania | R: Railway | | InterRegional Calatori | | | |
| IREX | | PL: Poland | B: Bus | Sosnowiec | Irex / Meteor | | | |
| IRIPK | | PL: Poland | V: Museum | | Instytut Rozwoju i Promocji Kolei | | | |
| IRIS | | I: Italy | T: Type of car, lorry | Name of the Iveco buses in 1999 - 2013, due to merger with Renault Bus. | Irisbus | | https://en.wikipedia.org/wiki/Iveco_Bus | |
| IRMR | | USA: United States of America | TOY: Toy, modell | | Iron Ridge Railroad (Imagenary model railroad) | | | |
| IRN | IR | USA: United States of America | R: Railway | | Illinois RailNet, Inc. | | | |
| IRQA | | IRQ: Iraq | Y: Military | | | | | |
| IRRC | | USA: United States of America | R: Railway | | Iowa R.R. Co. | | | |
| IRSI | | CH: Switzerland | P: Pool (Leasing / wagon pool) | | International Rolling Stock Investment GmbH | | | |
| IRSIG | | CH: Switzerland | P: Pool (Leasing / wagon pool) | | International Rolling Stock Investment GmbH | | | |
| IRT | | USA: United States of America | C: City traffic | New York | Interborough Rapid Transit | | | |
| IRTT | | RO: Romania | R: Railway | | European Rail Transport Feroviar | | | |
| IRUN | IRN | RUS: Russia | YM: Military: Navy | | Imperial Russian Navy | | | |
| ISAF | | RO: Romania | ??? | | ISAF S.A. | | | |
| ISAR | | D: Germany | B: Bus | | Isarperle | | | |
| ISC | | I: Italy | R: Railway | | Interporto Servizio Cargo | | http://www.isc.it/en | |
| ISE | | J: Japan | R: Railway | | Ise Electric Railway Co. | Owned by Kintetsu | | |
| ISER | | J: Japan | R: Railway | | Ise Railway | 3. sector railway in Mie Prefecture | http://www.isetetu.co.jp/ | |
| ISL | IL | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Island Line Ltd. | 1999: 13.4km standard gauge, electrified at 660V= 3rd rail | | |
| ISRR | | USA: United States of America | R: Railway | | Indiana Southern Railroad | | | |
| ISUZU | | J: Japan | T: Type of car, lorry | | Isuzu | | | |
| IT | ITC | USA: United States of America | R: Railway | Istanbul | Illinois Terminal | | | |
| ITB | | D: Germany | R: Railway | | ITB Transportgesellschaft mbH | | | |
| ITCO | | USA: United States of America | I: Industry (user) | | Island Terminal Company | | | |
| ITCOKE | | I: Italy | I: Industry (user) | | Italiana Coke | | http://www.italianacoke.it | |
| ITEX | | I: Italy | TU: Touristic railway | | Italy Express | | | |
| ITF | | F: France | A: Aviation | | Air Inter | | | |
| ITL | | D: Germany | R: Railway | | Import Tranport Logistik GmbH | | www.itl-dresden.de/ | |
| ITTR | | USA: United States of America | R: Railway | | ITT Rayonier Railroad | | | |
| ITUKA | | J: Japan | R: Railway | | Itsukaichi Railway | 1925 - 1940 | | |
| IVECO | | ??? | F: Industry (manufacturer) | | | | | |
| IWATE | | J: Japan | R: Railway | | Iwate Development Railway | | https://en.wikipedia.org/wiki/Iwate_Development_Railway | |
| IWIG | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Isle of Wight | | | |
| IYE | | YAR: Yemen | A: Aviation | | Yemenia | | https://en.wikipedia.org/wiki/Yemenia | |
| IYO | | J: Japan | C: City traffic | Matsuyama | Iyo Railway | | | |
| IZICH | | J: Japan | B: Bus | | Izumo Ichibata Kotsu | | | |
| J | | J: Japan | ??? | | Japan | | | |
| JA | | J: Japan | Y: Military | | Japanese Army | | | |
| JAA | | J: Japan | A: Aviation | | Japan Asia Airways | | | |
| JAAT | JAA | T: Thailand | A: Aviation | | JetAsia Airways | | | |
| JAE | | PRC: China | A: Aviation | | Jade Cargo International | | | |
| JAIR | JLJ, XM | ??? | ??? | | | | | |
| JAL | | J: Japan | A: Aviation | | Japan Airlines | | | |
| JAROSZ | | PL: Poland | B: Bus | Knurów | Tanie Linie Autobusowe, Transport-Spedycja-Usługi, Transport-Usługi Jerzy Jaroszek | | | |
| JAS | JAS, JD | J: Japan | A: Aviation | | Japan Air System | | | |
| JASDF | | J: Japan | Y: Military | | Japan Air Self-Defense Force | | | |
| JASLO | | PL: Poland | C: City traffic | Jasło | Zakład Miejskiej Komunikacji Samochodowej w Jaśle | | https://pl.wikipedia.org/wiki/Zak%C5%82ad_Miejskiej_Komunikacji_Samochodowej_w_Ja%C5%9Ble | |
| JAST | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Miejskiej w Jastrzębiu-Zdroju | | | |
| JATR | | J: Japan | A: Aviation | | Japan Air Transport | | https://en.wikipedia.org/wiki/Japan_Air_Transport | |
| JAV | | JOR: Jordan | A: Aviation | | Jordan Aviation | | https://en.wikipedia.org/wiki/Jordan_Aviation | |
| JAWOR | | PL: Poland | C: City traffic | | PKM Jaworzno | | | |
| JAZ | | J: Japan | A: Aviation | | JALways | | https://en.wikipedia.org/wiki/JALways | |
| JB | | CH: Switzerland | R: Railway | | Jungfraubahn | | | |
| JBHZ | | USA: United States of America | S: Street transport company | | J. B. Hunt Transport Inc. | | | |
| JBL | | USA: United States of America | B: Bus | | Jamaica Bus Lines | | | |
| JBV | | N: Norway | M: Industry (railway maintenance) | | Jernbaneverket | | http://www.jernbaneverket.no | |
| JCAB | | J: Japan | O: Organisation | | Japan Civil Aviation Bureau | | | |
| JCG | | J: Japan | Y: Military | | Japan Coast guard | | | |
| JCTOURS | | USA: United States of America | B: Bus | | J. C. Tours | | | |
| JD | | USA: United States of America | T: Type of car, lorry | | John Deer | | | |
| JDA | | J: Japan | A: Aviation | | Japan Domestic Airlines | | | |
| JDZ | | YU: Yugoslavia | RS: State Railway | | | | | |
| JEDR | | PL: Poland | B: Bus | | PKS Jędrzejów | | | |
| JEFFTRAN | | USA: United States of America | C: City traffic | Jefferson (MO) | City of Jefferson's Transit Division | | ttps://en.wikipedia.org/wiki/JeffTran | |
| JEHUB | | D: Germany | B: Bus | | Josef Ettenhuber GmbH | | | |
| JENA | | D: Germany | C: City traffic | Jena | Jenaer Nahverkehr GmbH | | https://de.wikipedia.org/wiki/Jenaer_Nahverkehr | |
| JERA | | USA: United States of America | C: City traffic | | Jerusalem Avenue Bus Line | | | |
| JERSEY | | USA: United States of America | C: City traffic | | Jersey Bus Inc. | | | |
| JEX | | J: Japan | A: Aviation | | JAL Express Co., Ltd | | | |
| JF | | DK: Denmark | ??? | | | | | |
| JFJ | | DK: Denmark | R: Railway | | Jysk-Fyenske Jernbaner | 1868-1893 Later connected to SFJ and renamed to DSB | | |
| JGORA | | PL: Poland | C: City traffic | | MZK Jelenia Góra | | | |
| JGR | | J: Japan | R: Railway | | Japanese Government Railways | | | |
| JGSDF | | J: Japan | Y: Military | | Japanese Ground Self Defense Force | | | |
| JGSP | | SR: Serbia | RT: Regional transport company | Novi Sad | Javno Gradsko Saobraćajno Preduzeće Novi Sad | | https://en.wikipedia.org/wiki/JGSP_Novi_Sad | |
| JGSPNS | | YU: Yugoslavia | C: City traffic | Novi Sad | The Public City Transport Enterprise of Novi Sad | | http://www.gspns.co.rs/ | |
| JH | | AUS: Australia | M: Industry (railway maintenance) | | John Holland | | http://www.johnholland.com.au | |
| JHMD | | CZ: Czech Republic | N: Narrow gauge railway | | Jindrichohradecké místní dráhy, a. s. | | http://jhmd.cz/ | |
| JIHO | | CZ: Czech Republic | B: Bus | | ČSAD JIHOTRANS a.s | | | |
| JJ | | USA: United States of America | R: Railway | | Joliet Junction | | | |
| JJA | | ROK: Korea | A: Aviation | | Jeju Air | | | |
| JJP | | J: Japan | A: Aviation | | Jetstar Japan | | | |
| JJTR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | JJ Travel | | | |
| JK | | H: Hungary | B: Bus | | Jászkun Volán | | | |
| JKK | | E: Spain | A: Aviation | | Spanair | | https://en.wikipedia.org/wiki/Spanair | |
| JKL | | D: Germany | N: Narrow gauge railway | | Jan Klein | | | |
| JLA | | PL: Poland | B: Bus | Jarocin | Jarocińskie Linie Autobusowe | | | |
| JLJ | | J: Japan | A: Aviation | | Japan Airlines Domestic Co. Ltd. | | | |
| JLT | | S: Sweden | R: Railway | | Jönköping Länstrafik | | | |
| JLTR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | J&L Transport LLC | | | |
| JMAG | | CH: Switzerland | M: Industry (railway maintenance) | | | | | |
| JMK | | CZ: Czech Republic | RO: Railway operator | | Jihomoravský kraj | | | |
| JMSDF | | J: Japan | Y: Military | | Japan Maritime Self-Defense Force | | | |
| JMT | | ZA: South Africa | C: City traffic | | Johannesburg Muncipial Transport | | | |
| JNA | | ROK: Korea | A: Aviation | | Jin Air | | | |
| JNR | | J: Japan | R: Railway | | Japan National Railway | | | |
| JNRB | | J: Japan | B: Bus | | JNR Bus | | | |
| JOHNSON | | USA: United States of America | C: City traffic | | Johnson County Transit | | | |
| JOLIET | | CDN: Canada | C: City traffic | | Joliet Mass Transit District | | | |
| JOMO | | J: Japan | R: Railway | | Jomo Railway | | | |
| JOMU | | J: Japan | R: Railway | | Jomu Railway | Passenger traffic ended in 1972, line closed in 1986. | https://ja.wikipedia.org/wiki/%E4%B8%8A%E6%AD%A6%E9%89%84%E9%81%93 | |
| JONCK | | B: Belgium | T: Type of car, lorry | | VDL Jonckheere | | http://en.wikipedia.org/wiki/Jonckheere | |
| JOSE | | D: Germany | I: Industry (user) | | Josera GmbH & Co KG | | josera.de | |
| JOSHIN | | J: Japan | R: Railway | | Joshin Electric Railway | | https://en.wikipedia.org/wiki/J%C5%8Dshin_Dentetsu_J%C5%8Dshin_Line | |
| JOSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Rail Connection, Inc. | | | |
| JPBX | | USA: United States of America | R: Railway | | Caltrain | | | |
| JR | | J: Japan | ??? | | | | | |
| JRB | | J: Japan | B: Bus | | JR Bus | | | |
| JRBC | | J: Japan | B: Bus | | JR Tokai Bus Company | | | |
| JRBCH | | J: Japan | B: Bus | | Chugoku JR Bus | | | |
| JRBH | | J: Japan | B: Bus | | JR Hokkaido Bus | | | |
| JRBK | | J: Japan | B: Bus | | JR Bus Kanto | | | |
| JRBKY | | J: Japan | B: Bus | | JR Kyushu Bus | | | |
| JRBT | | J: Japan | B: Bus | | JR Bus Tohuku | | | |
| JRBTECH | | J: Japan | B: Bus | | JR Bus Tech | Owned by JR Bus Kanto | | |
| JRBW | | J: Japan | B: Bus | | West JR Bus | | | |
| JRC | | J: Japan | R: Railway | | Central Japan Railway Company | | | |
| JRE | | J: Japan | R: Railway | | JR East | | | |
| JRF | | J: Japan | R: Railway | | JR Freight | | | |
| JRH | | J: Japan | R: Railway | | JR Hokkaido | | | |
| JRIV | | USA: United States of America | B: Bus | | James River Bus Lines | | | |
| JRK | | J: Japan | R: Railway | | JR Kyushu | | | |
| JRS | | J: Japan | R: Railway | | Shikoku Railway Company (JR Shikoku) | | | |
| JRTT | | J: Japan | F: Industry (manufacturer) | | Japan Railway Construction, Transport and Technology Agency | | http://www.jrtt.go.jp/ | |
| JRW | | J: Japan | R: Railway | | JR West | | | |
| JRWC | JRC | JA: Jamaica | R: Railway | | Jamaica Railway Corporation | | | |
| JSA | | SGP: Singapore | A: Aviation | | Jetstar Asia Airways | | https://en.wikipedia.org/wiki/Jetstar_Asia_Airways | |
| JSCC | | USA: United States of America | V: Museum | | Jersey Shore Commuter Club | | | |
| JST | | AUS: Australia | A: Aviation | | Jetstar Airways | | | |
| JSYV | | USA: United States of America | S: Street transport company | | J. Syvret & Co. Ltd. | | | |
| JTA | | J: Japan | A: Aviation | | Japan Transocean Air | | | |
| JTAFL | | US-FL: USA, Florida | C: City traffic | | Jacksonville Transportation Authority | | | |
| JTCO | | USA: United States of America | R: Railway | | Jacksonville Terminal Co. | | | |
| JTIX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | The David J. Joseph Co. | | | |
| JTM | | USA: United States of America | R: Railway | | Johnston's Terminal Muskogee | | | |
| JUIST | | D: Germany | N: Narrow gauge railway | | Inselbahn Juist | | | |
| JUMBO | | D: Germany | M: Industry (railway maintenance) | | Jumbotec | | | |
| JURW | JRW | AUS: Australia | M: Industry (railway maintenance) | | Junee Railway Workshop | | | |
| JUST | JST | J: Japan | A: Aviation | | Japan Universal System Transport | | | |
| JWR | | HK: Hong Kong | C: City traffic | | Jiuguang West Railway | | | |
| JZ | | YU: Yugoslavia | R: Railway | | Jugoslovenske železnice | | | |
| K | | AUS: Australia | A: Aviation | | Ansett Australia | | | |
| KAC | | KWT: Kuwait | A: Aviation | | Kuwait Airways | | https://en.wikipedia.org/wiki/Kuwait_Airways | |
| KAGK | | J: Japan | B: Bus | | Kanagawaken Kanko Bus Co. | Subsidiary of the Odakyu Group | | |
| KAGO | | J: Japan | C: City traffic | Kagoshima | | | | |
| KAI | | RI: Indonesia | RS: State Railway | | Kereta Api Indonesia | | | |
| KAIC | | RI: Indonesia | RO: Railway operator | | PT Kereta Commuter Indonesia | | https://en.wikipedia.org/wiki/KAI_Commuter | |
| KAL | | ROK: Korea | A: Aviation | | Korean Air | | | |
| KALA | KLA | PL: Poland | B: Bus | Kalisz | Kaliskie Linie Autobusowe | | http://kla.com.pl/ | |
| KALF | | H: Hungary | B: Bus | | Kisalföld Volán | | | |
| KALI | | SU: Sovietunion | C: City traffic | Kaliningrad | | | | |
| KAMAZ | | SU: Sovietunion | T: Type of car, lorry | | Kamaz | | | |
| KAMI | | J: Japan | A: Aviation | | | Closed on 2006/11/30 | http://ja.wikipedia.org/wiki/%E7%A5%9E%E5%B2%A1%E9%89%84%E9%81%93 | |
| KAMM | | D: Germany | I: Industry (user) | | Kämmerer / Ahlstrom Papier Osnabrück | | | |
| KAN | | J: Japan | R: Railway | | Kanto Railway Co., Ltd. | Kanto- Tetsudo- Kabushiki-gaisha | | |
| KANACHU | | J: Japan | B: Bus | | Kanagawa Chuo Kotsu | | http://www.kanachu.co.jp/ | |
| KANAW | | J: Japan | B: Bus | | Kanto Auto Works Ltd (KANTOU JIDOUSYA Co, Ltd) | | http://ja.wikipedia.org/wiki/%E9%96%A2%E6%9D%B1%E8%87%AA%E5%8B%95%E8%BB%8A_(%E6%A0%83%E6%9C%A8%E7%9C%8C) | |
| KANB | | J: Japan | R: Railway | | Kanbara Railway | | | |
| KANTO | | J: Japan | R: Railway | | Kanto Railway | Subsidiary of the Keisei Group | https://en.wikipedia.org/wiki/Kant%C5%8D_Railway | |
| KANTOB | | J: Japan | B: Bus | | Kanto Bus Co. | | https://www.kanto-bus.co.jp/english/company/ | |
| KAP | | H: Hungary | B: Bus | | Kapos Volán | Part of the Keisei Electric Railway | | |
| KAPK | | H: Hungary | N: Narrow gauge railway | | Kaposvári Kisvasút | | | |
| KAPV | | H: Hungary | B: Bus | Kaposvár | Kaposvári Városi Közlekedés | | | |
| KAR | | CS: Czechslowakia | T: Type of car, lorry | | Karosa | | | |
| KARMANN | | D: Germany | I: Industry (user) | | Karmann Osnabrück | | | |
| KARSAN | | TR: Turkey | T: Type of car, lorry | | Karsan | | | |
| KARV | | CZ: Czech Republic | B: Bus | | ČSAD Karviná a.s. | | https://cs.wikipedia.org/wiki/3%C4%8CSAD | |
| KASH | | J: Japan | R: Railway | | Kashima railway company | | | |
| KASP | | PL: Poland | B: Bus | Kielce | Kieleckie Autobusy Spółka Pracownicza | | | |
| KASWIN | | PL: Poland | C: City traffic | | Komunikację Autobusową Sp. z o.o. w Świnoujściu | | | |
| KASZ | KAEV | H: Hungary | N: Narrow gauge railway | | Kaszó, kisvasút | | | |
| KATAHI | | J: Japan | R: Railway | Kuroyama | Katahigashi port private line | The Kuroyama station divergence new Katahigashi port private line - the Niigata seaside railroad. | | |
| KAUN | | LT: Lithuania | C: City traffic | Kaunas | UAB Kauno autobusai | | | |
| KAVZ | | RUS: Russia | T: Type of car, lorry | | Kurgansky Avtobusny Zavod | | | |
| KAWAC | | J: Japan | C: City traffic | | Kawasaki City Transportation Bureau | | | |
| KAZAN2 | | RUS: Russia | B: Bus | Kazan | Passenger motor transport enterprise No. 2, Kazan | | https://www.kazan-patp2.ru/ | |
| KAZD | KZD | RU: Burundi | RS: State Railway | | Kaliningrad Railway | | | |
| KB | | DK: Denmark | R: Railway | | Kalvehavebanen | 1897 - 1959 | | |
| KBC | | J: Japan | C: City traffic | | Kobe Municipal Subway | | | |
| KBE | | D: Germany | C: City traffic | Köln | Köln-Bonner Eisenbahnen AG | | https://de.wikipedia.org/wiki/K%C3%B6ln-Bonner_Eisenbahnen | |
| KBSR | | USA: United States of America | R: Railway | | Kankakee, Beaverville and Southern R.R. Co. | | | |
| KCAIRPORT | | USA: United States of America | O: Organisation | | Kansas City International Airport | | | |
| KCATA | | USA: United States of America | B: Bus | | Kansas City Area Transportation Authority | | https://en.wikipedia.org/wiki/Kansas_City_Area_Transportation_Authority | |
| KCCX | | USA: United States of America | I: Industry (user) | | Kennecott Copper Corp. | | | |
| KCLX | | USA: United States of America | I: Industry (user) | | Kansas City Power & Light Co. | | | |
| KCM | | USA: United States of America | C: City traffic | Seattle | King County Metro | | | |
| KCPS | | USA: United States of America | C: City traffic | | Kansas City Public Service Co. | | | |
| KCR | | HK: Hong Kong | R: Railway | Hong Kong | Kowloon-Canton Railway | | | |
| KCS | | USA: United States of America | R: Railway | | Kansas City Southern Railway Company | | | |
| KCSM | | MEX: Mexico | R: Railway | | Kansas City Southern de Mexico | | | |
| KDA | | AUS: Australia | A: Aviation | | Kendell Airlines | | https://en.wikipedia.org/wiki/Kendell_Airlines | |
| KDDT | | PL: Poland | B: Bus | | KDD Trans | | | |
| KDO | | PL: Poland | R: Railway | | Koleje Dolnoslaskie | | | |
| KDS | | CZ: Czech Republic | M: Industry (railway maintenance) | | Kladenská Dopravní a Strojní | | | |
| KEB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Country South-East: Kentish Bus | LCSE was largely based around Dartford and Gravesend, with a rural element hanging on around the Darent Valley and Sevenoaks | | |
| KEBFI | | DDR: German Democratic Republic | RT: Regional transport company | | VEB Kraftverkehr Eberswalde-Finow | | | |
| KECS | | H: Hungary | N: Narrow gauge railway | | Kecskeméti kisvasút | | | |
| KEG | | D: Germany | R: Railway | | Karsdorfer Eisenbahn-Gesellschaft | | | |
| KEI | | J: Japan | R: Railway | | Keisei | | | |
| KEIBS | | J: Japan | B: Bus | | Keisei Bus System | | | |
| KEIH | | J: Japan | R: Railway | | Keihan | | | |
| KEIKYU | | J: Japan | R: Railway | | Keikyu Corporation | | | |
| KEIKYUB | | J: Japan | B: Bus | | Keihin Express Bus Company | Owner: Keikyu Corporation | | |
| KEIKYUH | | J: Japan | B: Bus | | Haneda Keikyu Bus Company | Owned by the Keikyu Corporation | | |
| KEIKYUT | | J: Japan | B: Bus | | Keikyu Tourist Bus Limited | | | |
| KEIKYUY | | J: Japan | B: Bus | | Yokohama Keikyu Bus Company | Owned by the Keikyu Corporation, subsidiary of the Keihin Kyuko Bus Co., Ltd. | | |
| KEIO | | J: Japan | R: Railway | | | | | |
| KEIOB | | J: Japan | B: Bus | | Keio Dentetsu Bus | | https://en.wikipedia.org/wiki/Keio_Dentetsu_Bus | |
| KEIORI | | J: Japan | TB: Tourist agency | | Oriental tourism | Owned by the Keikyu Corporation | | |
| KEITB | | J: Japan | B: Bus | | Keisei Town Bus | | | |
| KEITR | | J: Japan | B: Bus | | Keisei Transit Bus | | | |
| KELX | | USA: United States of America | I: Industry (user) | | Kellogg Company | | | |
| KEM | KEMV | H: Hungary | N: Narrow gauge railway | | Kemence | | | |
| KENIA | | ??? | R: Railway | | | | | |
| KENOSHA | | USA: United States of America | C: City traffic | Kenosha | | | | |
| KENTB | | US-NJ: USA, New Jersey | B: Bus | | Kent Bus Company | | | |
| KEOSV | | S: Sweden | B: Bus | | Keolis Sweden | | | |
| KERR | | USA: United States of America | B: Bus | | Kerrville Bus Co. | | | |
| KESERA | | LT: Lithuania | C: City traffic | | UAB Kesera | | | |
| KETT | TLG | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | Ketton Cement | | | |
| KETY | MZK | PL: Poland | B: Bus | | Miedzygminny Zaklad Komunikacyjny w Ketach | | https://pl.wikipedia.org/wiki/Mi%C4%99dzygminny_Zak%C5%82ad_Komunikacyjny_w_K%C4%99tach | |
| KEVAG | | D: Germany | C: City traffic | Koblenz | Koblenzer Elektrizitätswerk und Verkehrs-AG | | https://de.wikipedia.org/wiki/Koblenzer_Elektrizit%C3%A4tswerk_und_Verkehrs-AG | |
| KEYS | | US-CA: USA, California | C: City traffic | | Key System | | | |
| KFBE | | D: Germany | C: City traffic | Köln | Köln-Frechen-Benzelrather Eisenbahn GmbH | | | |
| KFIX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | J & J Railcar Leasing, LLC | | | |
| KFNB | | A: Austria | ??? | | Kaiserliche Franz-Josef NordBahn | | | |
| KFOR | | X: Global | O: Organisation | | | | | |
| KFS | | J: Japan | R: Railway | | Kansai freight service | | | |
| KGB | | USA: United States of America | R: Railway | | Kewaunee, Green Bay & Western R.R. Co. | | | |
| KHAR | | UA: Ukraine | C: City traffic | | Kharkov Transport | | | |
| KHB | | RUS: Russia | A: Aviation | | Dalavia — Far Eastern Airways | | | |
| KHV | | K: Cambodia | A: Aviation | | Cambodia Angkor Air | | https://en.wikipedia.org/wiki/Cambodia_Angkor_Air | |
| KICEO | | F: France | C: City traffic | Vannes | Compagnie des transports Golfe du Morbihan - Vannes Agglomération | | https://fr.wikipedia.org/wiki/Transports_en_commun_de_Vannes | |
| KIEL | KVG | D: Germany | C: City traffic | Kiel | Kieler Verkehrsgesellschaft | | https://de.wikipedia.org/wiki/Kieler_Verkehrsgesellschaft | |
| KIELCE | | PL: Poland | C: City traffic | | MPK Kielce | | | |
| KIEV | | UA: Ukraine | C: City traffic | Kiev | Kievpastrans | | | |
| KIN | | J: Japan | R: Railway | | Kintetsu | | | |
| KINGCOAL | | USA: United States of America | B: Bus | | King Coal Tours | | | |
| KIR | KERV | H: Hungary | N: Narrow gauge railway | | Királyrét | | | |
| KIRB | | D: Germany | C: City traffic | Bad Schandau | Kirnitzschtalbahn | | | |
| KIS | | D: Germany | A: Aviation | | Contact Air | | https://en.wikipedia.org/wiki/Contact_Air | |
| KISO | | J: Japan | N: Narrow gauge railway | | Kiso forest railway | | | |
| KITAMI | | J: Japan | B: Bus | | Hokkaido Kitami Bus Corporation | | | |
| KITT | | CDN: Canada | C: City traffic | | Kitchener Transit | | | |
| KIWI | | NZ: New Zealand | R: Railway | | KiwiRail Holdings Limited | | | |
| KJB | | JA: Jamaica | I: Industry (user) | | Kaiser Jamaica Bauxite Co. | | | |
| KK | | D: Germany | ??? | | K&K - Eisenbahn-, Speise- und Salonwagen GmbH | | | |
| KKSTB | | A: Austria | R: Railway | | Kaiserliche-Königliche Staatsbahnen ? | | | |
| KL | | MAL: Malaysia | C: City traffic | Kuala Lumpur | other city transport | | | |
| KLA | | NL: Netherlands | Y: Military | | Koniklije Landmacht | | | |
| KLAP | | LT: Lithuania | C: City traffic | Klaipeda | UAB Klaipedos autobusu parkas | | | |
| KLASR | | LT: Lithuania | C: City traffic | | UAB Autoklasrida | | | |
| KLB | | CH: Switzerland | R: Railway | | Kriens-Luzern-Bahn | | | |
| KLC | | NL: Netherlands | A: Aviation | | KLM Cityhopper | | https://en.wikipedia.org/wiki/KLM_Cityhopper | |
| KLINGF | | D: Germany | B: Bus | | Gerda Klingenfuß GmbH | | | |
| KLM | | NL: Netherlands | A: Aviation | | KLM | | | |
| KLOCK | | D: Germany | I: Industry (user) | | Klöckner-Werke Bremen | | | |
| KLOSOK | | PL: Poland | B: Bus | | Przedsiębiorstwo Produkcyjno-Usługowo-Handlowe „Kłosok” Andrzej Kłosok | | | |
| KLT | | D: Germany | N: Narrow gauge railway | | Klingentalbahn | | | |
| KM | | PL: Poland | R: Railway | | Koleje Mazowieckie | | | |
| KMB | | HK: Hong Kong | C: City traffic | | Kowloon Motor Bus Company | | | |
| KMKM | | PL: Poland | O: Organisation | Warszawa | Klub Miłośników Komunikacji Miejskiej w Warszawie | | https://kmkm.waw.pl | |
| KMKOL | KM | PL: Poland | C: City traffic | Kołobrzeg | Komunikacja Miejska w Kołobrzegu, sp. z o.o. | | | |
| KML | | PL: Poland | R: Railway | | Koleje Malopolskie | | | |
| KMLOM | KML | PL: Poland | C: City traffic | Lomianki | Komunikacja Miejska Lomianki, sp. z o.o. | | http://kmlomianki.info/ | |
| KMRT | | RC: Taiwan | C: City traffic | | Kaohsiung Mass Rapid Transit | | | |
| KMS | | D: Germany | C: City traffic | Mettmann | | | | |
| KMSZCZ | | PL: Poland | B: Bus | | Komunikacja Miejska sp. z o.o. w Szczecinku | | | |
| KMXS | NVK | DDR: German Democratic Republic | C: City traffic | Karl-Marx Stadt (Chemnitz) | | | | |
| KNAPE | | D: Germany | M: Industry (railway maintenance) | | GSG Knape / Max Knape | | | |
| KNE | | D: Germany | R: Railway | | Kassel-Naumburger Eisenbahn AG | | | |
| KNR | | ROK: Korea | R: Railway | | | | | |
| KOBE | | J: Japan | C: City traffic | Kobe | Kobe Municipial Transportation Bureau | | | |
| KOBSH | | J: Japan | R: Railway | | Kobe Electric Railway (Shintetsu) | | | |
| KOEHNE | | D: Germany | M: Industry (railway maintenance) | | Koehne Gleisbau | | | |
| KOG | | USA: United States of America | R: Railway | | Kansas, Oklahoma & Gulf | | | |
| KOK | | D: Germany | N: Narrow gauge railway | | Kreisbahn Osterode - Kreiensen | | | |
| KOL | | SU: Sovietunion | C: City traffic | Kolomna | | | | |
| KOMBI | | D: Germany | P: Pool (Leasing / wagon pool) | | Kombiwaggon | | | |
| KOMBUS | | PL: Poland | B: Bus | | Kórnickie Przedsiębiorstwo Autobusowe KOMBUS | | | |
| KOMI | | J: Japan | R: Railway | | Kominato Railway | | | |
| KOMOR | | PL: Poland | B: Bus | | Przedsiębiorstwo Usług Komunalnych Komorniki sp. z o.o. | | | |
| KONAN | | J: Japan | R: Railway | | Konan Railway | | https://en.wikipedia.org/wiki/K%C5%8Dnan_Railway_Company | |
| KOQ | | J: Japan | R: Railway | | Kita-Osaka Kyuko Railway (Kitakyu) | | | |
| KOR | | H: Hungary | B: Bus | | Körös Volán | | | |
| KORO | | PL: Poland | B: Bus | Zgierz | Transport Osobowy "Koro" Jerzy Konsowicz, Dariusz Rogut, s.c. | | http://www.transkoro.pl/ | |
| KOSAKA | | J: Japan | I: Industry (user) | | Kosaka Smelting & Refining | | | |
| KOSAKR | | J: Japan | R: Railway | | Kosaka Railway | | https://en.wikipedia.org/wiki/Kosaka_Smelting_%26_Refining_Kosaka_Line | |
| KOSKO | | BG: Bulgaria | B: Bus | Varna | Kosko | | | |
| KOSZ | | PL: Poland | C: City traffic | | MZK Koszalin | | | |
| KOTO | | J: Japan | R: Railway | | Takamatsu-Kotohira Electric Railroad Co., Ltd. (Kotoden) | | http://www.kotoden.co.jp/ | |
| KOVEB | | D: Germany | C: City traffic | Koblenz | Koblenzer Verkehrsbetriebe | |
www.koveb.de | |
| KPCHELM | | PL: Poland | B: Bus | | Komunikacja Prywatna, Chełm | | | |
| KPEV | K.P.E.V. | D: Germany | R: Railway | | Königliche Preussische Eisenbahn-Verwaltung | Am Anfang: Königlich Preußische und Großherzogliche Hessische Staatseisenbahn | | |
| KPKM | | PL: Poland | A: Aviation | Białystok | Komunalne Przedsiębiorstwo Komunikacji Miejskiej Białystok | | https://pl.wikipedia.org/wiki/Komunalne_Przedsi%C4%99biorstwo_Komunikacji_Miejskiej | |
| KPLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Koppel (Western Resources) | | | |
| KPPU | | PL: Poland | B: Bus | Krakow | Krakowskie Przedsiębiorstwo Przewozowo-Usługowe, sp. z o.o. | | | |
| KPR | | USA: United States of America | R: Railway | | Kelowna Pacific Railway, Ltd. | | | |
| KPT | | CZ: Czech Republic | RO: Railway operator | | KPT Rail s.r.o. | | https://www.kptrail.cz/ | |
| KPTE | | UA: Ukraine | C: City traffic | Ewpatoria | | | | |
| KPUC | | CDN: Canada | C: City traffic | | Kitchener Public Utilities Commission | | | |
| KQA | | EAK: Kenya | A: Aviation | | Kenya Airways Ltd. | | https://en.wikipedia.org/wiki/Kenya_Airways | |
| KR | | EAK: Kenya | R: Railway | | Kenya National Railway | | | |
| KRAK | MPK | PL: Poland | C: City traffic | Krakow | | | | |
| KRAPF | | US-PA: USA, Pennsylvania | B: Bus | | Krapf's | | | |
| KRB | | DK: Denmark | R: Railway | | Koge - Ringsted Banen | 1917 - 1963 | | |
| KREBS | | D: Germany | M: Industry (railway maintenance) | | Krebs Gleisbau | | | |
| KREF | | D: Germany | C: City traffic | Krefeld | | | | |
| KRFX | | USA: United States of America | I: Industry (user) | | Kraft Foods, a division of National Dairy Products Corp. | | | |
| KRIMTR | | UA: Ukraine | C: City traffic | | Krymtrolleybus | | | |
| KRIS | | PL: Poland | B: Bus | | Kris-Tour ABC | | | |
| KRM | | D: Germany | F: Industry (manufacturer) | | Krauss-Maffei | | | |
| KRML | KML | D: Germany | RO: Railway operator | | Kreisbahn Mansfelder Land | Die Kreisbahn Mansfelder Land GmbH (KML) ist ein öffentliches Eisenbahninfrastruktur-[1] (EIU) und -verkehrsunternehmen (EVU). Als EIU betreibt es die Parkeisenbahn Vatterode. Als EVU fährt es im Auftrag der Nahverkehrsservice Sachsen-Anhalt im Personenverkehr auf der Bahnstrecke Klostermansfeld–Wippra. | | |
| KROISS | | D: Germany | B: Bus | Rosenheim | L. Kroiss GmbH & Co. KG | | https://de.wikipedia.org/wiki/L._Kroiss | |
| KROSNO | | PL: Poland | C: City traffic | | Miejskiej Komunikacji Samochodowej w Krośnie | | | |
| KROT | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Krotoszynie | | | |
| KRR | | USA: United States of America | R: Railway | | Kiamichi R.R. Co., L.L.C. | | | |
| KRSP | | RO: Romania | I: Industry (user) | | Kronospan Sebes | | http://www.kronospansebes.ro/ | |
| KRT | | J: Japan | R: Railway | | Kashima Rinkai Railway | | https://en.wikipedia.org/wiki/Kashima_Rinkai_Railway | |
| KRUPP | | D: Germany | I: Industry (user) | | Krupp Stahl AG | | | |
| KRZD | | ??? | R: Railway | | Crimea Railway | | https://en.wikipedia.org/wiki/Crimea_Railway | |
| KS | | DK: Denmark | C: City traffic | Koppenhagen | Kobenhavns Sporveje | | | |
| KSAT | | J: Japan | B: Bus | | Kushiro Satellite Co. Ltd. | | http://www.kushiro-eisei.com/company/ | |
| KSB | | DK: Denmark | R: Railway | | København - Slangerup Banen (Slangerupbanen) | 1906 - 1948 | | |
| KSCH | | D: Germany | R: Railway | | Kiel-Schönberger Eisenbahn GmbH | | | |
| KSCX | | USA: United States of America | I: Industry (user) | | Kaiser Steel Corp. | | | |
| KSE | | D: Germany | R: Railway | | Kiel-Segeberger Eisenbahn GmbH | | | |
| KSKR | | J: Japan | R: Railway | | Kusakaru Electric Railway | | | |
| KSL | | PL: Poland | R: Railway | | Koleie Slaskie | | | |
| KSM | | I: Italy | B: Bus | | Konsortium Südtiroler Mietwagenunternehmer | | | |
| KSMX | | USA: United States of America | I: Industry (user) | | Kosmos Cement Co., Inc. | | | |
| KSOD | | H: Hungary | R: Railway | | Kaschau-Oderberger Bahn | | | |
| KSOYUZ | | UA: Ukraine | B: Bus | | Soyuz-Avto Kiev | | | |
| KSTM | | PL: Poland | V: Museum | | Klub Sympatyków Transportu Miejskiego | | https://kstm.pl/en/ | |
| KT | | FIN: Finland | RO: Railway operator | | Karelian Trains | Oy Karelian Trains Ltd was a joint venture agreed on 23 November 2006 between Russian Railways (RZhD) and VR Group (Finnish Railways) to facilitate the operation of international express passenger rail services between Helsinki, Finland, and Saint Petersburg, Russia. | https://en.wikipedia.org/wiki/Karelian_Trains | |
| KTJ | | KS: Kyrgyzstan | RS: State Railway | | Kyrgyz Railway | | http://www.kjd.kg/ | |
| KTKB | | LT: Lithuania | C: City traffic | Klaipeda | KTKB Gintarinis Vairas | | | |
| KTM | | MAL: Malaysia | R: Railway | | Keretapi Tanah Melayu | | https://en.wikipedia.org/wiki/Keretapi_Tanah_Melayu | |
| KTR | | J: Japan | R: Railway | | Kitakinki Tango Railway | | | |
| KTTU | | RUS: Russia | C: City traffic | Krasnodar | Krasnodar Tram and Trolleybus Administration | | https://www.kttu.ru/ | |
| KTX | | ROK: Korea | R: Railway | | Korea Train Express | Korea Train eXpress is South Korea's high-speed rail system, operated by Korail. | https://en.wikipedia.org/wiki/Korea_Train_Express | |
| KTZ | | KZ: Kazakhstan | R: Railway | | Kazakstan Temir Zholy | | www.railways.kz/ | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| KUANG | | RC: Taiwan | B: Bus | | Kuo-Kuang Motor Transportation | | | |
| KUANGHUA | | RC: Taiwan | C: City traffic | | Kuanghua Bus | | | |
| KUBIKI | | J: Japan | R: Railway | | Kubiki Railway & Bus | | | |
| KUGA | | J: Japan | R: Railway | | Kumagawa Railway | | http://en.wikipedia.org/wiki/Kumagawa_Railroad_Yunomae_Line | |
| KUK | | A: Austria | Y: Military | | Kaiserlich Österreich-Ungarische Marine/Imperial Austro-Hungarian Navy | | | |
| KUMA | | J: Japan | R: Railway | | Kumamoto Electric Railway | | | |
| KUMC | | J: Japan | C: City traffic | | Kumamoto City Transportation | | | |
| KUN | | H: Hungary | B: Bus | | Kunság Volán | | | |
| KUNI | KU | USA: United States of America | O: Organisation | Lawrence | University of Kansas | | | |
| KUR | | J: Japan | R: Railway | | Kurobe Gorge Railway | | http://en.wikipedia.org/wiki/Kurobe_Gorge_Railway | |
| KURE | | J: Japan | C: City traffic | | Kure City Transportation Bureau | | | |
| KURSKE | | RUS: Russia | C: City traffic | Kursk | MUP Kurskelektrotrans | | | |
| KUSH | | J: Japan | B: Bus | | Kushiro Bus | | https://ja.wikipedia.org/wiki/%E3%81%8F%E3%81%97%E3%82%8D%E3%83%90%E3%82%B9 | |
| KUTNO | | PL: Poland | C: City traffic | Kutno | Miejski Zakład Komunikacji w Kutnie | | | |
| KVA | | DDR: German Democratic Republic | B: Bus | | Kraftverkehr Annaberg | | | |
| KVAG | | D: Germany | C: City traffic | Kiel | | | | |
| KVB | | D: Germany | C: City traffic | Köln | | | | |
| KVBA | KVB | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Bautzen | | | |
| KVC | | D: Germany | B: Bus | | VEB Kraftverkehr Chemnitz | | | |
| KVD | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Dresden | | | |
| KVDL | | DDR: German Democratic Republic | B: Bus | | Kraftverkehrsgesellschaft Dreiländereck | | | |
| KVE | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Eisleben | | | |
| KVER | | D: Germany | C: City traffic | | Kraftverkehr Erkelenz | | | |
| KVG | | D: Germany | C: City traffic | Kassel | Kasseler Verkehrsgesellschaft | | | |
| KVGA | | D: Germany | B: Bus | | Kraftverkehrsgesellschaft Annaberg | | | |
| KVGB | KVG | D: Germany | B: Bus | Braunschweig | Kraftverkehrsgesellschaft mbH Braunschweig | | https://de.wikipedia.org/wiki/Kraftverkehrsgesellschaft_Braunschweig | |
| KVGO | KVG | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Görlitz | | | |
| KVGR | KVG | D: Germany | R: Railway | | Kahlgrundbahn | | | |
| KVGRI | | D: Germany | B: Bus | | Kraftverkehrsgesellschaft Ribnitz-Damgarten | | | |
| KVGZI | | D: Germany | B: Bus | | Krefverkehrsgesellschaft Zittau | | | |
| KVH | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Halle | | | |
| KVKO | | DDR: German Democratic Republic | B: Bus | Köthen | VEB KraftVerkehr Köthen | | | |
| KVKV | | H: Hungary | C: City traffic | Kassa (Kosice) | Kassai Villamos Közúti Vasút | | | |
| KVL | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Leipzig | | | |
| KVM | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Meißen | | | |
| KVP | | DDR: German Democratic Republic | C: City traffic | | VEB Kraftverkehr Pirna | | | |
| KVPO | | DDR: German Democratic Republic | B: Bus | | VEB KraftVerkehr Potsdam | | | |
| KVT | | LT: Lithuania | C: City traffic | Kaunas | Kauno viešasis transportas | | | |
| KVW | | DDR: German Democratic Republic | B: Bus | | Kraftverkehr Wittenberg | | | |
| KVWE | | DDR: German Democratic Republic | S: Street transport company | Weimar | Kraftverkehr Weimar | | | |
| KVZI | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Zittau | | | |
| KVZW | | DDR: German Democratic Republic | B: Bus | | VEB Kraftverkehr Zwickau | | | |
| KWEST | | USA: United States of America | C: City traffic | | Key West Transit | | | |
| KWG | | D: Germany | R: Railway | | Kreiswerke Gelnhausen (Wächtersbach - Bad Orb) | | | |
| KWH | | D: Germany | B: Bus | Geilenkirchen | Kreiswerke Heinsberg | | | |
| KWOON | | HK: Hong Kong | B: Bus | | Kwoon Chung Motors | | | |
| KWS | | D: Germany | B: Bus | Leverkusen | Kraftverkehr Wupper-Sieg AG Leverkusen | | | |
| KYLE | | USA: United States of America | R: Railway | | Kyle R.R. Co. | | | |
| KYUKB | | J: Japan | B: Bus | | Kyushu Kanko Bus Co. | | | |
| KYUS | | J: Japan | R: Railway | | Kyushu Railway | 1988 - 1907 | https://en.wikipedia.org/wiki/Kyushu_Railway | |
| KYUSHU | | J: Japan | R: Railway | | Kyushu Railway | before the nationalization | | |
| KZ | | ??? | R: Railway | | Kosovo Railway | Kosovo | | |
| KZC | | CZ: Czech Republic | R: Railway | | KŽC Doprava | | | |
| KZD | KZD | PRC: China | R: Railway | | China Railways | | | |
| KZEM | | DDR: German Democratic Republic | I: Industry (user) | | Karlsdorfer Zement GmbH | | | |
| KZK | | PL: Poland | B: Bus | Białystok | Komunalny Zakład Komunikacyjny Białystok | | https://pl.wikipedia.org/wiki/Komunalny_Zak%C5%82ad_Komunikacyjny | |
| LA | | USA: United States of America | C: City traffic | | | | www.kzk.pl | |
| LAB | LLB | BOL: Bolivia | A: Aviation | | Lloyd Aereo Boliviano | | https://en.wikipedia.org/wiki/Lloyd_A%C3%A9reo_Boliviano | |
| LABATT | | USA: United States of America | I: Industry (user) | | Labatt Brewery | | | |
| LAC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London & Country | The Drawlane Group bought LCSW in February 1998, and became British Bus in December 1992. LCSW was rebranded as London & Country in 1993, | | |
| LACMTA | | USA: United States of America | B: Bus | | Los Angeles County Metro Transit Authority | | | |
| LAE | | CO: Colombia | A: Aviation | | Lineas Aereas Carguera de Colombia S.A. | | | |
| LAEV | | H: Hungary | N: Narrow gauge railway | | Lillafüredi Erdei Vasút | | | |
| LAFGVL | | USA: United States of America | B: Bus | | Lafayette & Greenville IBOA | | | |
| LAG | | D: Germany | R: Railway | | Localbahn A.G. | | | |
| LAJ | | USA: United States of America | R: Railway | | Los Angeles Junction | | | |
| LAKC | | US-NJ: USA, New Jersey | B: Bus | | Lake Charter Bus Service | | | |
| LAKL | | USA: United States of America | B: Bus | | Lakeland Bus Lines | | | |
| LAL | | USA: United States of America | R: Railway | | Livonia, Avon & Lakeville R.R. Corp. | | | |
| LAMBW | | USA: United States of America | I: Industry (user) | | Lamb Weston Holdings Inc. | | | |
| LAMCO | | LB: Liberia | R: Railway | | | | | |
| LAMTA | | USA: United States of America | C: City traffic | Los Angeles | Los Angeles Mass Transit Authority | | | |
| LANDOLT | | CH: Switzerland | B: Bus | | Landolt Transport AG | | https://jms-gruppe.ch/landolt/ | |
| LANG | | D: Germany | N: Narrow gauge railway | | Langeoog | | | |
| LANGA | | DDR: German Democratic Republic | B: Bus | | Busunternehmen Langanki | | | |
| LANGEN | | D: Germany | B: Bus | | Theodor Langen Omnibusreisen | | | |
| LANS | | S: Sweden | B: Bus | | LänsTrafiken | | | |
| LANTA | | USA: United States of America | C: City traffic | | Lehigh and Northampton Transportation Authority | | https://en.wikipedia.org/wiki/Lehigh_and_Northampton_Transportation_Authority | |
| LANU | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Lancashire United Transport | | | |
| LAO | | A: Austria | A: Aviation | | Lao Airlines State Enterprise | | https://en.wikipedia.org/wiki/Lao_Airlines | |
| LARM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Armchair Passenger Transport | | | |
| LARW | LA | USA: United States of America | R: Railway | | Louisana & Arkansas Ry. | | | |
| LASPEZ | | I: Italy | C: City traffic | La Spezia | ATC La Spezia | | | |
| LAU | | D: Germany | R: Railway | | Connex Sachsen GmbH (Lausitzbahn) | This company used to be known as Lausitzbahn, but because they also started operating trains outside the Lausitz region the name was changed to Connex Sachsen. They operate passenger trains on Cottbus-Görlitz-Zittau, Leipzig-Bad Lausick-Geithain and a few trains on Görlitz-Bischofswerda-Dresden. Early in 2006 Connex was renamed in Veolia Verkehr. | www.lausitzbahn.de/ | |
| LAUBAG | | D: Germany | I: Industry (user) | | Lausitzer Braunkohle AG | | | |
| LAUDE | LAU | PL: Poland | RO: Railway operator | | Laude Smart Intermodal S.A. | | laude.pl | |
| LAWRB | | USA: United States of America | C: City traffic | Lawrence (KS) | Lawrence Bus Company | | | |
| LAWV | | USA: United States of America | R: Railway | | The Lorain & West Virginia Ry. Co. | | | |
| LAZ | | UA: Ukraine | T: Type of car, lorry | | Lviv Bus Factory | | https://en.wikipedia.org/wiki/Lviv_Bus_Factory | |
| LB | | DK: Denmark | R: Railway | | Lokalbanen A/S | | | |
| LBDK | LB | DK: Denmark | R: Railway | | Langelandsbanen | 1911 - 1962 | | |
| LBE | | D: Germany | R: Railway | | Lübeck-Büchener Eisenbahn | | | |
| LBEB | | USA: United States of America | C: City traffic | Long Beach (NY) | Long Beach Bus | | | |
| LBN | | RA: Argentina | R: Railway | | Linea Belgrano Norte | | | |
| LBNO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Northern | | | |
| LBPH | | A: Austria | N: Narrow gauge railway | | Lokalbahn Payerbach-Hirschwang | | | |
| LBPT | | US-CA: USA, California | B: Bus | | Long Beach Public Transportation | | | |
| LBQ | | D: Germany | N: Narrow gauge railway | | Lingen-Berge-Quakenbrück Kleinbahn | | | |
| LBSCR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | London Brighton & South Coast Railway | Later: Southern Railway | | |
| LBT | | US-CA: USA, California | C: City traffic | Long Beach | Long Beach Transit | | | |
| LBVX | | D: Germany | R: Railway | | vlexx GmbH | | vlexx.de | |
| LC | | USA: United States of America | R: Railway | | Lancaster and Chester | | | |
| LCAR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Carousel Buses | | | |
| LCD | | MEX: Mexico | R: Railway | | | | | |
| LCIT | | I: Italy | P: Pool (Leasing / wagon pool) | | LocoItalia Srl | | | |
| LCITY | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | City Bus Company | | | |
| LCLR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Lincolnshire Coast Light Railway | | | |
| LCNE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Country North-East | LCNE included the Hertfordshire New Towns, Stevenage, Welwyn Garden City, Hatfield, Hertford and Harlow, as well as the Thameside traffic around isolated Grays. | | |
| LCNW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Country North West | London Country North-West contained Watford, and part of the Uxbridge - Hemel Hempstead - Watford - St Albans conurbation, with Heathrow close by. | | |
| LCOA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Coaches | | | |
| LCRC | | USA: United States of America | R: Railway | | Lenawee County R.R. Co., Inc. | | | |
| LCSW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Country South-West | LCSW had centres in Guildford and Crawley, the latter with its Gatwick traffic, plus trunk routes over the North Downs to Croydon. | | |
| LD | | CH: Switzerland | R: Railway | | Landquart - Davos | | | |
| LDEV | | D: Germany | V: Museum | Düsseldorf | | | | |
| LDH | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Load-Haul | Load-Haul was a railfreight operator based in the North-East of the United Kingdom. It was formed in 1994 prior to the privatisation of British Rail.Originally,Load-Haul was known by BR as Train Load Freight-North(TLF-North) The company introduced a bold livery of black with orange lower cabsides.This livery was first unveiled to the public at Doncaster Locomotive Works' Open Day in Summer 1994.The first loco to have this livery was 56039 which attended the event. Load-Haul, along with Mainline Freight and Trans-Rail were purchased by EWS in 1996. | | |
| LDP | | AUS: Australia | P: Pool (Leasing / wagon pool) | | Locomotive Demand Power | | | |
| LDS | | D: Germany | R: Railway | | Logistik Dienstleistung und Service GmbH | | | |
| LDZ | | LV: Latvia | R: Railway | | Latvijas Dzelzcels | | www.ldz.lv/ | |
| LEB | | CH: Switzerland | R: Railway | | Lausanne-Echallens-Bercher | | | |
| LEBO | | PL: Poland | B: Bus | | Zakład Komunikacji Miejskiej w Lęborku | | | |
| LECZ | | PL: Poland | B: Bus | | PKS Łęczyca | | www.pksleczyca.pl/ | |
| LEEDSCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Leeds City Transport | | | |
| LEEDSTR | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Leeds Corporation Tramways | | | |
| LEF | | USA: United States of America | R: Railway | | Lake Erie, Franklin & Clarion Railroad Company | | | |
| LEG | | D: Germany | R: Railway | | Leipziger Eisenbahngesellschaft | | | |
| LEGN | | PL: Poland | C: City traffic | Legnica | Miejskie Przedsiębiorstwo Komunikacyjne w Legnicy | | | |
| LEGO | | TOY: Toy, model | ??? | | Lego toy trains | | | |
| LEHNER | | D: Germany | B: Bus | Gemünd | Omnibusbetrieb Lehner | | | |
| LEIGHC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Leigh Corporation Motors | | | |
| LEIP | | D: Germany | N: Narrow gauge railway | | Leipzig, Lilliput Eisenbahn | | | |
| LEL | | D: Germany | R: Railway | | Landeseisenbahn Lippe | | | |
| LENNARTZ | | D: Germany | B: Bus | Mönchengladbach | Lennartz Reisen GmbH | | | |
| LENORD | | I: Italy | R: Railway | | | LeNORD S.r.l. was a subsidiary of the FNM Group responsible for operating passenger train services in northern Italy. 2006/05/15 - 2011/05/03 | | |
| LENTZ | | L: Luxembourg | B: Bus | | Sales-Lentz | | | |
| LESZNO | | PL: Poland | C: City traffic | | MZK Leszno | | | |
| LETH | | CDN: Canada | B: Bus | | Lethbridge Transit | | | |
| LEUNA | | DDR: German Democratic Republic | I: Industry (user) | | Leunawerke | | | |
| LEW | | DDR: German Democratic Republic | F: Industry (manufacturer) | | Lokomotivbau Elektrotechnische Werke „Hans Beimler“ Hennigsdorf | | https://de.wikipedia.org/wiki/Lokomotivbau_Elektrotechnische_Werke_%E2%80%9EHans_Beimler%E2%80%9C_Hennigsdorf | |
| LEWIS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Lewis Travel | | | |
| LFCC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Capital Citybus | | | |
| LFCW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | First Centrewest | | | |
| LFI | | I: Italy | ??? | | LFI - La Ferrovia Italiana | | | |
| LFOR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Forest | | | |
| LG | | LT: Lithuania | R: Railway | | Valstybine Imone Lietuvos Gelezinkeliai | | www.litrail.lt/ | |
| LGCS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London General Country Services | | | |
| LGEN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London General | | | |
| LGOC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | London General Omnibus Company | | | |
| LH | | D: Germany | A: Aviation | | Lufthansa | | | |
| LHHN | | USA: United States of America | I: Industry (user) | | Lehigh Hanson Heidelberg Cement Group | | | |
| LHIL | | GB: United Kingdom of Great Britain and Northern Ireland | O: Organisation | | London Borough of Hillingdon | | | |
| LHR | | USA: United States of America | R: Railway | | Lehigh & Hudson River Railway | | | |
| LIAZ | | SU: Sovietunion | T: Type of car, lorry | | Likinskiy Avtobusnyi Zavod | | | |
| LIB | | ??? | R: Railway | | Lebanon | | | |
| LIBERTY | | USA: United States of America | B: Bus | | Liberty Coaches | | | |
| LIBLIN | | USA: United States of America | B: Bus | | Liberty Lines | | | |
| LIE | | FL: Liechtenstein | B: Bus | | Liechtenstein Bus | | | |
| LIMA | | X: Global | TOY: Toy, modell | | | | | |
| LIMI | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Limebourne (Independent Way) | | | |
| LIMQ | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Limebourne (Q-Drive) | | | |
| LINCT | | US-NJ: USA, New Jersey | B: Bus | | Lincoln Transit | | | |
| LINEAS | LNS | B: Belgium | RO: Railway operator | | Lineas Group SA/NV | | lineas.net | |
| LING | EI | IRL: Republic of Ireland | A: Aviation | | Aer Lingus Teoranta -> Aer Linus Limited | | | |
| LINH | | USA: United States of America | B: Bus | | Lindenhurst Bus Company | | | |
| LINKKR | | PL: Poland | B: Bus | | Link-Bus Kraków | | | |
| LINZ | | A: Austria | C: City traffic | Linz | | | | |
| LIOR | | SK: Slovakia | B: Bus | | SAD Liorbus | | | |
| LIRC | | USA: United States of America | R: Railway | | Louisville and Indiana | | | |
| LIRR | | USA: United States of America | R: Railway | | Long Island Railroad | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| LIS | | P: Portugal | C: City traffic | Lisboa | | | | |
| LIVCT | LCT | USA: United States of America | C: City traffic | | Livingston County Transit (IL) | | | |
| LIVP | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Liverpool | | | | |
| LJ | | DK: Denmark | R: Railway | | Lollandsbanen | 1874 - | www.lollandsbanen.dk/ | |
| LKA | | PL: Poland | R: Railway | | Lódzka Kolej Aglomeracyjna | | | |
| LKAB | | S: Sweden | ??? | | | | | |
| LKATP1 | | UA: Ukraine | C: City traffic | | Lvov Komunalnij ATP-1 | | | |
| LKE | LKE, 8L | PRC: China | A: Aviation | | Lucky Air | | | |
| LKM | | DDR: German Democratic Republic | F: Industry (manufacturer) | | Lokomotivbau Karl Marx Babelsberg | | | |
| LLA | | PL: Poland | B: Bus | | Lubelskie Linie Autobusowe | | https://lla.com.pl/ | |
| LLB | | CH: Switzerland | N: Narrow gauge railway | | Leuk-Leukerbad-Bahn / Chemin de Fer Electrique de Loèche-les-Bains | | | |
| LLBA | LLB | A: Austria | R: Railway | | Linzer Lokalbahn | Original company name until 2000. In 2000 renamed to LILO. | | |
| LLK | | D: Germany | R: Railway | | Lokalbahn Lam-Kötzting AG | | | |
| LLNK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | LondonLinks | | | |
| LLPX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Locomotive Leasing Partners LLC | | | |
| LMC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | London Midland Trains | | | |
| LMET | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Metroline | | http://en.wikipedia.org/wiki/Metroline | |
| LMIX | | A: Austria | N: Narrow gauge railway | | Lokalbahn Mixnitz - St. Erhard | | | |
| LMR | | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | Longmoor Military Railway | | https://en.wikipedia.org/wiki/Longmoor_Military_Railway | |
| LMRK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Landmark Bus | | | |
| LMS | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | London, Midland & Scottish Rail | | | |
| LMSX | | CDN: Canada | P: Pool (Leasing / wagon pool) | | Locomotive Management Services | | | |
| LMTA | | D: Germany | V: Museum | Mannheim | Landesmuseum für Technik und Arbeit | | | |
| LMV | | DK: Denmark | ??? | | Lemwigbahnen | | | |
| LMVLR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Leek and Manifold Valley Light Railway | The L&MVLR was a 2' 6\" gauge line in Derbyshire, England. It ran through picturesque but rural country, with a very sparse population to sustain it, from Waterhouses (at the end of the North Staffordshire Railway's branch from Leek) to Hulme End, a distance of just over 8 miles. The line opened in 1904 and was operated by the NSR, until both were absorbed into the London, Midland and Scottish Railway in 1923. The LMS continued to operate it at an ever increasing loss due to competition from road transport until finally, in 1934, the dairy that was its main source of traffic closed, and the railway itself soon succumbed. All was not lost, however, because the local council ensured that most of the track-bed was retained as a cycle-way and footpath, and thus can still be enjoyed today. | | |
| LMX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | General Electric Leasing | | | |
| LN | | USA: United States of America | R: Railway | | Louisville and Nashville | | | |
| LNAC | | USA: United States of America | R: Railway | | Louisville, New Albany & Corydon R.R. Co. | | | |
| LNE | | USA: United States of America | R: Railway | | Lehigh and New England Ry. | | | |
| LNER | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | | | | |
| LNJ | | DK: Denmark | R: Railway | | Lyngby - Nærum Jernbane (Nærumbanen) | 1923 - | | |
| LNR | | USA: United States of America | R: Railway | | Louisville & Nashville | | | |
| LNVG | | D: Germany | R: Railway | | Landesnahverkehrsgesellschaft Niedersachsen mbH | | http://www.lnvg.de/ | |
| LNW | | USA: United States of America | R: Railway | | The Louisiana and North West R.R. Co. | | | |
| LOAM | | USA: United States of America | R: Railway | | Louisiana Midland Ry. Co. | | | |
| LOC | | D: Germany | R: Railway | Locomore GmbH & Co. KG | Locomore | | https://en.wikipedia.org/wiki/Locomore | |
| LOCON | | D: Germany | R: Railway | | Locon Logistic & Consulting AG | | | |
| LODZ | | PL: Poland | C: City traffic | Lodz | MPK Lodz | | | |
| LOGO | | ??? | ??? | | | | | |
| LOGSERV | LOGS | A: Austria | RO: Railway operator | | Logistik Service GmbH | | | |
| LOKO | LM | D: Germany | R: Railway | | Lokomotion Gesellschaft für Schienentraktion GmbH | | | |
| LOKOOP | | CH: Switzerland | R: Railway | | Lookup AG | Die Lokoop AG (LAG) war ein von der Schweizerischen Südostbahn (SOB), der Mittelthurgaubahn (MThB) und dem Reisebüro Mittelthurgau (RMT) gegründetes Unternehmen zur Vermietung von Lokomotiven | https://de.wikipedia.org/wiki/Lokoop | |
| LOMZA | | PL: Poland | C: City traffic | | Miejskie Przedsiębiorstwo Komunikacyjne w Łomży | | https://pl.wikipedia.org/wiki/Miejskie_Przedsi%C4%99biorstwo_Komunikacyjne_w_%C5%81om%C5%BCy | |
| LONB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Buslines | | | |
| LONC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Country | | | |
| LONSR | | CDN: Canada | B: Bus | | London Street Railway | | | |
| LONTR | | CDN: Canada | C: City traffic | | London Transit | | | |
| LOORI | | US-NJ: USA, New Jersey | B: Bus | | Loori Bus Company | | | |
| LORP | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Orpington Buses Ltd | | http://roundabout.moonfruit.com/ | |
| LOTH | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Edinburgh | Lothian Regional Transport | | | |
| LOTHR | | FAN: Fantasy | R: Railway | | Rail Lothardie | | | |
| LOTOS | | PL: Poland | R: Railway | | LOTOS Kolej | | | |
| LOTUS | | ??? | T: Type of car, lorry | | | | | |
| LOV | | NL: Netherlands | R: Railway | | Lovers Rail | | | |
| LPB | | CH: Switzerland | R: Railway | | Locarno - Ponte Brolla - Bignasco | | | |
| LPN | | USA: United States of America | R: Railway | | Longview, Portland and Northern Railway | | | |
| LPR | | PL: Poland | O: Organisation | | Lotnicze Pogotowie Ratunkowe | Polish Air Rescue | | |
| LPS | | CDN: Canada | R: Railway | | London & Port Stanley Railway | | | |
| LRAF | RAF | LV: Latvia | T: Type of car, lorry | | Rīgas Autobusu Fabrika (RAF): Latvija | | | |
| LRBH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Retro Bus Hire | | | |
| LROV | | ??? | T: Type of car, lorry | | Land Rover | | | |
| LRS | | USA: United States of America | R: Railway | | Laurinburg & Southern R.R. Co. | | | |
| LRTAM | LRTA | RP: Philippines | C: City traffic | Manila | Light Rail Transit Authority | | | |
| LRW | | USA: United States of America | R: Railway | | Little Rock & Western Railroad | | | |
| LRWY | | USA: United States of America | R: Railway | | Lehigh Railway | | | |
| LSBC | | USA: United States of America | R: Railway | | La Salle and Bureau County Railroad (Chicago Rail Link) | | | |
| LSD | | RO: Romania | R: Railway | | DB Schenker Rail Romania SRL | Formerly: Logistic Services Danubius | | |
| LSDB | | BG: Bulgaria | RO: Railway operator | | DB Schnker Rail Bulgaria | | | |
| LSE | | D: Germany | R: Railway | | Lübeck-Segeberger Eisenbahn | | | |
| LSEB | LSE | CH: Switzerland | R: Railway | | Luzern-Stans-Engelberg-Bahn | | | |
| LSI | | USA: United States of America | R: Railway | | Lake Superior & Ishpeming | | | |
| LSIX | | USA: United States of America | I: Industry (user) | | Liquid Sugars, Inc. | | | |
| LSK | | DDR: German Democratic Republic | Y: Military | | Luftstreitkräfte der Nationalen Volksarmee | | https://en.wikipedia.org/wiki/Air_Forces_of_the_National_People%27s_Army | |
| LSM | | RA: Argentina | R: Railway | | Linea San Martin | | | |
| LSMS | | USA: United States of America | R: Railway | | Lake Shore & Michigan Southern | | | |
| LSRC | | USA: United States of America | R: Railway | | Lake State Railway Company | | | |
| LSWR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | London & South Western Railway | | | |
| LT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | London Transport | | | |
| LTAR | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | Arriva | | | |
| LTAT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Atlas Bus | | | |
| LTAV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Alder Valley | | | |
| LTBT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Blue Triangle | | | |
| LTBU | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Buses | | | |
| LTC | | ??? | Z: Scale | | Let's Train Connect | | | |
| LTCC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Capital Citybus | | http://www.capitalcitybus.co.uk/ | |
| LTCE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Central | | | |
| LTCW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Centerwest | | | |
| LTE | | A: Austria | R: Railway | | Logistik und Transport GmbH | | | |
| LTEX | | USA: United States of America | R: Railway | | Larrys Truck & Electric | | | |
| LTFBG | | I: Italy | RO: Railway operator | | Lo.Tra.Fer srl | | www.lotrafer.it | |
| LTFR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | First | | | |
| LTGG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Grey-Green | | | |
| LTH | | D: Germany | R: Railway | | Logistik Transport Handel | | | |
| LTJC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Jubilee Coaches | | | |
| LTLE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Leaside Division | | | |
| LTLG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | London General | | | |
| LTLU | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | London United | | | |
| LTLX | | USA: United States of America | I: Industry (user) | Casey, Illionis | Leader Oil Company | | | |
| LTMB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | MetroBus | | | |
| LTML | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | MetroLine | | | |
| LTMUS | | GB: United Kingdom of Great Britain and Northern Ireland | V: Museum | | London Transport Museum | | | |
| LTOG | | DK: Denmark | R: Railway | | Lokaltog A/S | Lokaltog was formed on 1 July 2015 as a merger of Lokalbanen A/S and Regionstog A/S. | | |
| LTRI | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | R&I Tours of North London | | | |
| LTRL | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | Tramlink | | | |
| LTRV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Traveller | | https://en.wikipedia.org/wiki/London_Traveller | |
| LTS | | S: Sweden | R: Railway | | LT: | | | |
| LTU | | CH: Switzerland | A: Aviation | | LTU | | | |
| LTVX | | USA: United States of America | I: Industry (user) | | LTV Steel Co. | | | |
| LTWL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stanwell Buses Limited (Westlink) | | | |
| LUB | | D: Germany | C: City traffic | Lübeck | | | | |
| LUBIN | PKS | PL: Poland | B: Bus | | Przedsiêbiorstwo Komunikacji Samochodowej w Lubinie S.A. | | | |
| LUBL | | PL: Poland | C: City traffic | Lublin | Lublin MPK | | | |
| LUCH | | D: Germany | N: Narrow gauge railway | | Lüchow-Schmarsauer Eisenbahn GmbH | | | |
| LUD | MVG | D: Germany | B: Bus | Lüdenscheid | Märkische Verkehrsgesellschaft mbH Lüdenscheid | | | |
| LUNT | | A: Austria | B: Bus | | Landbus Unterland | Der Landbus Unterland ist ein Teil des Vorarlberger Landbussystems. Der Landbus Unterland ist auf Basis eines Gemeindeverbands organisiert, welcher sich aus den Gemeinden des unteren Rheintals, sowie des Leiblachtals zusammensetzt. Auch einige „Hanggemeinden“ wie Bildstein sind dem Verband beigetreten. In Betrieb ging das Landbus Unterland System im Jahr 1999. | http://www.landbus-unterland.at/ | |
| LURR | | E: Spain | B: Bus | | Lurraldebus Donostia | | | |
| LUTD | LDT | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Luton & District / The Shire | Luton & District in May 1990 bought the Stevenage depot and operations of Sovereign Bus and Coach (ex LCNE), and in October they bought London Country North-West, which had previously been bought by its management. In April 1995 the company was rebranded as "The Shires", with a new blue and yellow livery and local area operating titles. Cowie Group took over in June 1996, and renamed Arriva in November 1997 | | |
| LUTSK | | UA: Ukraine | B: Bus | Lutsk | ATP 10701 Lutsk | | https://uk.wikipedia.org/wiki/%D0%9B%D1%83%D1%86%D1%8C%D0%BA%D0%B8%D0%B9_%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81 | |
| LUTSKE | | UA: Ukraine | C: City traffic | | Lutsk company of electric transport | | https://uk.wikipedia.org/wiki/%D0%9B%D1%83%D1%86%D1%8C%D0%BA%D0%B8%D0%B9_%D1%82%D1%80%D0%BE%D0%BB%D0%B5%D0%B9%D0%B1%D1%83%D1%81 | |
| LV | | USA: United States of America | R: Railway | | Lehigh Valley | | | |
| LVAL | | USA: United States of America | R: Railway | | Lackawanna Valley R.R. Corp. | | | |
| LVB | | D: Germany | C: City traffic | Leipzig | | | | |
| LVG | | D: Germany | B: Bus | Lübeck | Lübeck-Travemünder Verkehrsgesellschaft mbH | | https://de.wikipedia.org/wiki/L%C3%BCbeck-Travem%C3%BCnder_Verkehrsgesellschaft | |
| LVJ | | DK: Denmark | R: Railway | | Lyngby - Vedbæk Jernbane | 1900 - 1923 | | |
| LVLJ | | D: Germany | B: Bus | Ludwigsburg | Ludwigsburger Verkehrslinien Reisebüro Jäger GmbH | Since 2016: LVL Jäger GmbH | https://de.wikipedia.org/wiki/LVL_J%C3%A4ger | |
| LVOV | | UA: Ukraine | C: City traffic | Lvov | LKP Lvivelektrotrans | | | |
| LVRC | | USA: United States of America | R: Railway | | Lamoile Vallye Railroad | | | |
| LVRF | | AUS: Australia | R: Railway | | Lachlan Valley Rail Freight | | | |
| LVRR | | USA: United States of America | R: Railway | | Lycoming Valley | | | |
| LVTS | | USA: United States of America | C: City traffic | Las Vegas | Las Vegas Transit System | | | |
| LW | | CDN: Canada | R: Railway | | Louisville & Wadley Ry. Co. | | | |
| LWB | | HK: Hong Kong | C: City traffic | Hong Kong | Long Win Bus | | | |
| LWEI | | D: Germany | M: Industry (railway maintenance) | | Leonhard Weiss GmbH | | | |
| LWNUK | | PL: Poland | B: Bus | | Przedsiębiorstwo Wielobranżowe Leszek Wnuk | | | |
| LWP | | SK: Slovakia | C: City traffic | | Lokalbahn Wien-Pressburg | | | |
| LY | | A: Austria | ??? | | Austria - unknown | | | |
| LYNB | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Lynton and Barnstaple Railway | The Lynton and Barnstaple Railway was a 19 mile long 1ft 11.5in gauge line across Exmoor opened in 1898 as an independent company, absorbed by the SR at grouping and sadly closed by that Company in 1935. Its main use was to carry tourists to Lynton and Lynmouth from the Mainline Railway at Barnstaple. It also carried a reasonable quantity of local goods traffic. | | |
| LYON | TCL | F: France | C: City traffic | Lyon | Transports en Commun Lyonnais | | www.tcl.fr | |
| M | | H: Hungary | R: Railway | | Magyar Államvasutak | | | |
| MAA | | USA: United States of America | R: Railway | | Magma Arizona R.R. Co. | | | |
| MABST | | USA: United States of America | C: City traffic | | Manhattan & Bronx Surface Transit Operating Authority | | | |
| MABSTOA | | USA: United States of America | B: Bus | | Manhattan & Bronx Surface Transit Operating Authority | | | |
| MACEG | | I: Italy | M: Industry (railway maintenance) | | MACEG S.r.l. - Construzioni Generali Edili e Ferroviarie | | | |
| MADR | MVG | D: Germany | C: City traffic | Mülheim an der Ruhr | Mülheimer Verkehrs Gesellschaft mbH | | | |
| MAF | | MYA: Myanmar | Y: Military | | Myanmar | | | |
| MAG | | D: Germany | T: Type of car, lorry | | Magirus | | | |
| MAGDA | | PL: Poland | B: Bus | Makowisko | Uslugi Transportowe Józef Magda | | | |
| MAGGI | | CH: Switzerland | I: Industry (user) | | Maggi | | | |
| MAGLI | | I: Italy | F: Industry (manufacturer) | | Magliola Antonio & Figli S.p.a. - workshop | | | |
| MAH | | H: Hungary | A: Aviation | | Malév: Magyar Légiközlekedési Vállalat. | | | |
| MAID | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Maidstone & District | | | |
| MAIDCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Maidstone Corporation Transport | | | |
| MAINZ | MVG | D: Germany | C: City traffic | Mainz | Mainzer Verkehrsgesellschaft | | https://de.wikipedia.org/wiki/Mainzer_Verkehrsgesellschaft | |
| MAK | | D: Germany | F: Industry (manufacturer) | | Maschienenbau Kiel | | | |
| MAKI | | CH: Switzerland | I: Industry (user) | | Makies AG | | https://www.makies.ch | |
| MALA | | MAL: Malaysia | A: Aviation | | Malayan Airways | | https://en.wikipedia.org/wiki/Malaysia%E2%80%93Singapore_Airlines#History | |
| MALB | | PL: Poland | C: City traffic | Malbork | Miejski Zakład Komunikacji w Malborku | | | |
| MALOWA | MALOW | D: Germany | M: Industry (railway maintenance) | | MaLoWa Bahnwerkstatt GmbH | | | |
| MAN | | D: Germany | T: Type of car, lorry | | MAN | | | |
| MANAS | | TR: Turkey | T: Type of car, lorry | | MAN Türkiye A.Ş. | | https://en.wikipedia.org/wiki/MANA%C5%9E | |
| MANL | | USA: United States of America | B: Bus | | Manhattan Lines | | | |
| MAPLE | | USA: United States of America | B: Bus | | Maplewood Equipment Co. | | | |
| MARB | | US-NJ: USA, New Jersey | B: Bus | | Marathon Bus Service | | | |
| MARC | | USA: United States of America | R: Railway | | Maryland Rail Commuter | | | |
| MARCIN | | USA: United States of America | R: Railway | | Marietta & Cincinnati Railroad | | | |
| MARIN | | US-CA: USA, California | B: Bus | | Marin Airporter | | | |
| MARKAB | | PL: Poland | B: Bus | | Zgierskie Przedsiebiorstwo Komunikacyjne "MARKAB" Sp. z o.o. | | | |
| MARKLIN | | X: Global | TOY: Toy, modell | | Märklin | | | |
| MARM | | I: Italy | I: Industry (user) | | Ferrovia Marmifera Privata di Carrara | | https://en.wikipedia.org/wiki/Marmifera | |
| MART | | ??? | A: Aviation | | Martinair | | | |
| MARTA | | USA: United States of America | B: Bus | | Metropolitation Atlanta Rapid Transit Authority | | | |
| MARTI | | CH: Switzerland | RO: Railway operator | | Marti Infra AG | | martiagh.ch | |
| MARUG | | J: Japan | C: City traffic | Marugame | Marugame Community Bus | | | |
| MAS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | MAS Special Engineering (BrightBus) | | http://brightbus.net/ | |
| MASA | MAS | MAL: Malaysia | A: Aviation | | Malaysia Airlines (Penerbangan Malaysia) | | | |
| MASSBAY | | USA: United States of America | B: Bus | | Mass. Bay Transportation Authority | | | |
| MATA | | USA: United States of America | C: City traffic | Memphis | Memphis Area Transit Authority | | | |
| MATICH | | J: Japan | B: Bus | | Matsue Ichibata Kotsu | | | |
| MATR | | H: Hungary | B: Bus | | Mátra Volán | | | |
| MATS | | J: Japan | R: Railway | | Matsuura Railway | | http://en.wikipedia.org/wiki/Matsuura_Railway | |
| MATSU | | J: Japan | R: Railway | | Matsumoto Electric Railway | | | |
| MATT | | USA: United States of America | R: Railway | | Mattagami Railroad | | | |
| MAU | | H: Hungary | B: Bus | | Mávaut | | | |
| MAVC | | H: Hungary | R: Railway | | MÁV Cargo | | | |
| MAVEP | | H: Hungary | M: Industry (railway maintenance) | | Mávépcell Kft. | | | |
| MAVS | | H: Hungary | R: Railway | | MÁV Start | | | |
| MAX | | CH: Switzerland | S: Street transport company | Dietlikon | Max Schmid Transporte | | | |
| MAXH | | D: Germany | I: Industry (user) | | Max Hütte | | | |
| MAXX | | NZ: New Zealand | R: Railway | | Metropolitan Auckland XXpressways | | | |
| MAZ | | RU: Burundi | T: Type of car, lorry | | MAZ | | | |
| MAZDA | | ??? | T: Type of car, lorry | | | | | |
| MB | | D: Germany | T: Type of car, lorry | | Mercedes-Benz | | | |
| MBC | | CH: Switzerland | N: Narrow gauge railway | | Transports de la région Morges–Biere–Cossonay | | | |
| MBE | | D: Germany | R: Railway | | Müllheim-Badenweiler-Eisenbahn | | | |
| MBJ | | DK: Denmark | R: Railway | | Maribo - Bandholm Jernbane (Bandholmbanen) | 1869 - 1952 | | |
| MBKX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Mitsui Rail Capital, LLC | | | |
| MBMR | | USA: United States of America | TOY: Toy, modell | | Mesquite Belt Modell Railroad | | http://www.trainweb.org/mesquitebelt/ | |
| MBRR | | USA: United States of America | R: Railway | | Meridian & Bigbee R.R. Co. | | | |
| MBS | | A: Austria | ??? | | Montafonerbahn | | | |
| MBSL | | USA: United States of America | C: City traffic | | MetroBus St.Louis | | | |
| MBTA | | USA: United States of America | R: Railway | | Massachusetts Bay Transportation Authority | | | |
| MBUS | | NL: Netherlands | V: Museum | | Museum Buurtspoorweg | | | |
| MC | | USA: United States of America | R: Railway | | MassCentral | | | |
| MCAR | | F: France | B: Bus | St. Louis | Metrocars | | https://www.distribus.com/qui-sommes-nous/metrocars | |
| MCER | | USA: United States of America | R: Railway | | Massachusetts Central R.R. | | | |
| MCEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Midwest Railcar Capital Equipment Corp. | | | |
| MCHX | | USA: United States of America | R: Railway | | Transcisco Rail Services Co. | | | |
| MCI | | USA: United States of America | T: Type of car, lorry | | MCI | | | |
| MCL | | I: Italy | N: Narrow gauge railway | | Mediterranian | | | |
| MCNE | | I: Italy | R: Railway | | Metrocampania Nordest | | http://www.metrocampanianordest.it/ | |
| MCR | | USA: United States of America | R: Railway | | McCloud River Railway Company | | | |
| MCRR | | USA: United States of America | R: Railway | | The Monongahela Connecting R.R. Co. | | | |
| MCRW | MCRR | USA: United States of America | R: Railway | | Maine Coast R.R. Corp. | | | |
| MCTS | | USA: United States of America | B: Bus | | Milwaukee County Transit System | | | |
| MCU | | I: Italy | R: Railway | | Mediterranea Centrale Umbra | 1915 - 1956 | | |
| MD | | USA: United States of America | R: Railway | | Maryland - Delaware | | | |
| MDAD | | USA: United States of America | A: Aviation | | Miami Dade Aviation Department | | | |
| MDADE | | USA: United States of America | B: Bus | | Miami-Dade Transit | | | |
| MDD | | USA: United States of America | F: Industry (manufacturer) | | | | | |
| MDME | | CO: Colombia | C: City traffic | | Metro de Medellín | | | |
| MDML | | CZ: Czech Republic | C: City traffic | Mariánské Lázně | Městská doprava Mariánské Lázně | | https://www.mdml.cz/ | |
| MDOT | | USA: United States of America | C: City traffic | | Maryland Department of Transportation | | | |
| MDPO | | CZ: Czech Republic | C: City traffic | Opava | Městský dopravni podnik Opava | | https://www.mdpo.cz/ | |
| MDSPB | | SK: Slovakia | C: City traffic | | Mestská dopravná spoločnosť, a.s., Považská Bystrica | | | |
| MDT | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Merchant Despatch Transportation | | | |
| MDW | | USA: United States of America | R: Railway | | Minnesota, Dakota & Western | | | |
| ME | | USA: United States of America | R: Railway | | Morristown & Erie | | | |
| MEBA | | D: Germany | R: Railway | | MecklenburgBahn | | https://de.wikipedia.org/wiki/MecklenburgBahn | |
| MEC | | USA: United States of America | R: Railway | | Maine Central Railroad | | | |
| MECC | | F: France | M: Industry (railway maintenance) | | Angelo Meccoli | | http://www.meccoli.fr/ | |
| MECS | | H: Hungary | N: Narrow gauge railway | | Mecseki kisvasút - Pécs | | | |
| MEDI | | RO: Romania | C: City traffic | | SC Meditur SA | | https://meditur.ro/ | |
| MEDW | MED | P: Portugal | RO: Railway operator | | MEDWAY - Operador Ferroviario e Logistico de Mercadorias, SA | | https://www.medway-portugal.com/ | |
| MEE | | D: Germany | N: Narrow gauge railway | | Mühlhausen-Ebelebener Eisenbahn | near Erfurt/Thuringia | | |
| MEG | | D: Germany | R: Railway | | Mitteldeutscher Eisenbahngesellschaft GmbH | | www.meg-bahn.de/ | |
| MEGA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Megabus | | | |
| MEIDB | | D: Germany | B: Bus | | Meidenbauer Reiobus | | https://www.regiobus.info/ | |
| MENA | | I: Italy | T: Type of car, lorry | | Carrozzeria Menarini | | | |
| MEND | MRL | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Mendip Rail Limited | | | |
| MERA | MT | CZ: Czech Republic | R: Railway | | Metrans Rail | | | |
| MERCER | | USA: United States of America | B: Bus | | Mercer Metro | | | |
| MERR | | USA: United States of America | R: Railway | | Maine Eastern Railroad | | | |
| MERS | ATM | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Arriva Trains Merseyside (former Merseyrail Electrics) | 1999: 120km standard gauge, electrified at 750V= 3rd rail Merseyrail is the name given to the electric commuter train network centred on Liverpool. The name was used as the official brand for the network in the days of British Rail, and has stuck through several franchise holders. Merseyrail is one of the most frequent British commuter systems outside London, transporting 100,000 passengers a day, with services running (on average) every 15 minutes during weekday daytime, and 30 minutes at evenings and weekends. Services run on two lines covering the Liverpool suburban area and greater Merseyside, with a total track length of 120 km, and 67 stations. | http://www.merseyrail.org/ | |
| MERSB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Merseybus | 1986 - | | |
| MERULA | | LT: Lithuania | B: Bus | | UAB Merula | | | |
| MERVAL | | RCH: Chile | C: City traffic | | Metro Regional de Valparaíso S.A. | | | |
| MESEA | | F: France | RO: Railway operator | | Société en charge de la LGV SEA (Tours - Bordeaux) | | | |
| MESZ | MEEV | H: Hungary | N: Narrow gauge railway | | Mesztegnyö | | | |
| MET | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | London | Metropolitan Railway | | | |
| METO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Metropolitan Omnibus | | | |
| METR | MR | D: Germany | R: Railway | | metronom Eisenbahngesellschaft mbH | | www.der-metronom.de/ | |
| METRA | METX | USA: United States of America | C: City traffic | Chicago | Metra | | | |
| METRO | | ZA: South Africa | C: City traffic | | Metrorail | | | |
| METROAPPLE | | USA: United States of America | B: Bus | | Metro Apple Express | | | |
| MEXSUB | | MEX: Mexico | C: City traffic | | Ferrocarril Suburbano de la Zona Metropolitana del Valle de México | | | |
| MFER | | RA: Argentina | F: Industry (manufacturer) | | Materfer: Material Ferroviario S.A. | | | |
| MFFE | | D: Germany | R: Railway | | Großherzoglich Mecklenburgische Friedrich Franz Eisenbahn | | | |
| MFO | | CH: Switzerland | F: Industry (manufacturer) | | Maschinenfabrik Oerlikon | | | |
| MFOR | | BR: Brazil | C: City traffic | | Metrô de Fortaleza | | https://en.wikipedia.org/wiki/Fortaleza_Metro | |
| MFVJ | | DK: Denmark | R: Railway | | Mariager - Fårup - Viborg Jernbane (Mariagerbanen) | 1927 - 1966 | | |
| MG | | CH: Switzerland | R: Railway | | Ferrovia Monte Generoso | | | |
| MGA | | USA: United States of America | R: Railway | | Monongahela Ry. Co. | | | |
| MGB | | CH: Switzerland | R: Railway | | Matterhorn-Gotthard-Bahn | MGB was created in 2003 through an amalgamation of Furka Oberalp Bahn (FO) and BVZ Zermatt-Bahn (BVZ). | https://en.wikipedia.org/wiki/Matterhorn_Gotthard_Bahn | |
| MGBC | | USA: United States of America | B: Bus | | M&G Bus Company | | | |
| MGDY | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Miejskiej w Gdyni | | | |
| MGE | | USA: United States of America | A: Aviation | | Asia Pacific Airlines | Based on Guam | | |
| MGL | | MGL: Mongolia | A: Aviation | | MIAT Mongolian Airlines | | | |
| MGLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Mobil Grain Ltd. | | | |
| MGSX | | USA: United States of America | I: Industry (user) | | Martin Gas Sales Incorporated | | | |
| MGW | | D: Germany | M: Industry (railway maintenance) | | mgw Service GmbH | | | |
| MGWR | | IRL: Republic of Ireland | ??? | | Midland Great Western Railway | | | |
| MH | | USA: United States of America | R: Railway | | Mohawk & Hudson | | | |
| MHDBB | | SK: Slovakia | C: City traffic | Banska Bystrica | | | | |
| MHE | | D: Germany | R: Railway | | Meppen-Haselünner Eisenbahn | | | |
| MHFX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | MHF Logistical Solutions Inc. | | | |
| MHVK | | H: Hungary | M: Industry (railway maintenance) | | MÁV Hajdú Vasútépítõ Kft. | | | |
| MHWA | | USA: United States of America | R: Railway | | Mohawk, Adirondack & Northern R.R. Corp. | | | |
| MI | | USA: United States of America | R: Railway | | Missouri-Illinois R.R. Co. | | | |
| MIB | MIB/KWO | CH: Switzerland | R: Railway | | Meiringen-Innertkirchen-Bahn/Kraftwerk Oberhasli | 5km narrow gauge(1000mm), electrified at 1200V= This line used to be a construction railway for the hydro-electric power plant. Later the line was opened to the public and operated by battery cars. In 1977 it was electrified and second-hand cars were bought from OEG in Mannheim(D). | http://www.aareschlucht.ch/Album/d-mib_neu_e.htm | |
| MIBRAG | | D: Germany | I: Industry (user) | | Mitteldeutsche Braunkohle AG | | | |
| MICHA | | PL: Poland | B: Bus | Radom | Michalczewski Sp. z o.o. | | | |
| MID | MML | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Midland Main Line Ltd. | 1999: 477km standard gauge, not electrified. Midland Mainline (MML) is a British train operating company, created after the privatisation of British Rail. It runs passenger services from London St Pancras to the East Midlands and Yorkshire, on the Midland Main Line. MML is based in Derby and owned by the National Express Group. | http://www.midlandmainline.com/ | |
| MIDI | | F: France | R: Railway | | Compagnie des chemins de fer du Midi | | | |
| MIDW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Mid Warwickshire | | | |
| MIDX | | US-NJ: USA, New Jersey | B: Bus | | Middlesex Bus Company | | | |
| MIELEC | | PL: Poland | B: Bus | Mielec | Miejska Komunikacja Samochodowa Sp. z o.o. | | http://www.mks-mielec.pl/ | |
| MIGN | | USA: United States of America | R: Railway | | Michigan Northern Railway Company | | | |
| MIKA | | CH: Switzerland | V: Museum | | MIKADO | | | |
| MIKI | | J: Japan | R: Railway | | Miki Railway | | | |
| MIL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | National Power Rail | | | |
| MILLET | MISA | F: France | P: Pool (Leasing / wagon pool) | | Millet SAS | | | |
| MILLI | | AFG: Afghanistan | B: Bus | | Milli Bus Enterprise | | https://en.wikipedia.org/wiki/Milli_Bus | |
| MILW | | USA: United States of America | R: Railway | | Chicago, Milwaukee, St. Paul and Pacific Railroad | | | |
| MINA | | J: Japan | R: Railway | | Minami Aso Railway | | | |
| MINE | | X: Global | N: Narrow gauge railway | | Mine | | | |
| MINIK | | PL: Poland | B: Bus | | MiniBus Karczew | | | |
| MINSK | | BY: Belarus | C: City traffic | Minsk | Minsktrans | | | |
| MIR | | I: Italy | R: Railway | | Mercitalia | | | |
| MISC | | USA: United States of America | R: Railway | | Mississipi Central | | | |
| MISS | | CDN: Canada | C: City traffic | Mississauga | Mississauga Transit | | | |
| MITB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Mitcham Belle | | | |
| MITR | | D: Germany | ??? | | Mitropa | | | |
| MITRAG | | CH: Switzerland | P: Pool (Leasing / wagon pool) | | Mitrag AG | | http://mitrag.ch/ | |
| MITS | | J: Japan | T: Type of car, lorry | | Mitshubishi | | | |
| MITSUI | | J: Japan | I: Industry (user) | | Mitsui Mining Co., Ltd. | | | |
| MITTENWALD | | A: Austria | R: Railway | | Mittenwaldbahn | | https://de.wikipedia.org/wiki/Mittenwaldbahn | |
| MIVRTA | | USA: United States of America | C: City traffic | Dayton OH | Miami Valley Regional Transit Authority | | | |
| MIYAGI | | J: Japan | R: Railway | | Miyagi Electric Railway | Predecessor of the Senseki line | | |
| MIYAGO | | J: Japan | B: Bus | | Miyago Bus | | | |
| MIYAKO | | J: Japan | B: Bus | | Miyazaki Kotsu Co. Ltd. | | https://ja.wikipedia.org/wiki/%E5%AE%AE%E5%B4%8E%E4%BA%A4%E9%80%9A | |
| MIZURIN | | J: Japan | R: Railway | | Mizushima Rinkai Railway Co., Ltd. | | https://en.wikipedia.org/wiki/Mizushima_Rinkai_Railway | |
| MJAWT | | CDN: Canada | C: City traffic | | Moose Jaw Transit | | | |
| MJBAD | | DK: Denmark | R: Railway | | Midtjyske Jernbaner | 2008 - | | |
| MKAT | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Miejskiej Katowice | | | |
| MKB | | D: Germany | R: Railway | | Mindener Kreisbahnen GmbH | | www.mkb.de/ | |
| MKD | MKD, 6F | MK: North Macedonia | A: Aviation | | MAT Airways | | | |
| MKIX | | USA: United States of America | F: Industry (manufacturer) | | Morrison Knudsen Corp. | | | |
| MKON | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Koninie sp. z o.o. | | | |
| MKSDEB | | PL: Poland | C: City traffic | | Miejska Komunikacja Samochodowa sp. z o.o. w Dêbicy | | | |
| MKSSK | | PL: Poland | B: Bus | | MKS Skarżysko-Kamienna | | | |
| MKT | | USA: United States of America | R: Railway | | Missouri-Kansas-Texas Railroad Company | | | |
| MLAT | MLT | USA: United States of America | R: Railway | | Morgan’s Louisiana & Texas Railroad | | | |
| MLD | | NL: Netherlands | Y: Military | | Marineluchtvaartdienst | The Netherlands Naval Aviation Service (Dutch: Marineluchtvaartdienst) is the naval aviation branch of the Royal Netherlands Navy. | https://en.wikipedia.org/wiki/Netherlands_Naval_Aviation_Service | |
| MLFR | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Mainline Freight | | https://en.wikipedia.org/wiki/Mainline_Freight | |
| MLMX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Metal Management Inc. | | | |
| MLT | | S: Sweden | ??? | | Malmöhus Länstrafik | | | |
| MMA | | CDN: Canada | R: Railway | | Montreal, Maine & Atlantic Railway Company | | | |
| MMBL | | US-CA: USA, California | B: Bus | | Montebello Municipal Bus Lines | | | |
| MMCX | | USA: United States of America | R: Railway | | TransMatrix, Inc. | | | |
| MMID | | USA: United States of America | R: Railway | | Maryland Midland | | | |
| MML | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Manchester | Manchester Metrolink | | | |
| MMRR | | USA: United States of America | R: Railway | | Mid Michigan Railroad | | | |
| MMRTC | | SA: Saudi-Arabia | C: City traffic | | Makkah Mass Rail Transit Company | | | |
| MMTC | | RP: Philippines | C: City traffic | | Metro Manila Transit Corporation | | | |
| MMV | | H: Hungary | R: Railway | | Magyar Magánvasút ZRT | | | |
| MMVTA | | US-PA: USA, Pennsylvania | C: City traffic | | Mid Mon Valley Transit Authority | | | |
| MN | | NL: Netherlands | B: Bus | | Midnet | | | |
| MNA | | USA: United States of America | R: Railway | | Missouri and Northern Arkansas Railroad | | | |
| MNB | | TR: Turkey | A: Aviation | | MNG Airlines | | https://en.wikipedia.org/wiki/MNG_Airlines | |
| MNCR | MNCW | USA: United States of America | R: Railway | | Metro North Commuter Railroad | | | |
| MNCW | | USA: United States of America | R: Railway | New York | Metro-North Railroad | | | |
| MNCX | | USA: United States of America | I: Industry (user) | | Minnesota Corn Processors, Inc. | | | |
| MNDP | MRL | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Mendip Rail | | | |
| MNG | | MGL: Mongolia | A: Aviation | | Aero Mongolia | | https://en.wikipedia.org/wiki/Aero_Mongolia | |
| MNJ | | USA: United States of America | R: Railway | | Middleton and New Jersey Railway Company | | | |
| MNM | | AUS: Australia | I: Industry (user) | | Mt. Newman Mining | BHP-Billton | | |
| MNNR | | USA: United States of America | R: Railway | | Minnesota Commercial Railway | | | |
| MNOS | | H: Hungary | V: Museum | | MÁV Nosztalgia Kft | | | |
| MNRR | | USA: United States of America | R: Railway | | Modoc Northern Railroad Co. | | | |
| MNS | | USA: United States of America | R: Railway | | Minneapolis, Northfield & Southern | | | |
| MNVA | | USA: United States of America | R: Railway | | Minnesota Valley Transportation Co., Inc.-Southwest | | | |
| MO | | CH: Switzerland | R: Railway | | Martigny - Orsieres | | | |
| MOB | | CH: Switzerland | R: Railway | | Montreux-Oberland-Bernois | | | |
| MOBI | | PL: Poland | B: Bus | | Mobilis | | | |
| MOBUS | | D: Germany | C: City traffic | Mönchengladbach | MöBus | | | |
| MOBX | | USA: United States of America | I: Industry (user) | | Mobil Oil Corp. | | | |
| MOCL | | USA: United States of America | C: City traffic | Montgomery, AL | Montgomery City Lines | | https://en.wikipedia.org/wiki/National_City_Lines#Montgomery_City_Lines_and_the_Montgomery_Bus_Boycott | |
| MOEKB | | D: Germany | R: Railway | | Moerser Kreisbahn | | | |
| MOERS | | D: Germany | C: City traffic | | Moerser Straßenbahn | | | |
| MOG | | BR: Brazil | R: Railway | | Companhia Mogiana de Estradas de Ferro | | | |
| MOH | | USA: United States of America | R: Railway | | Mobile & Ohio | | | |
| MOLLI | | D: Germany | N: Narrow gauge railway | | Mecklenburgische Bäderbahn Molli | | | |
| MON | CIL | USA: United States of America | R: Railway | | Chicago Indianapolis & Louisville Railroad (Monon) | | | |
| MONACELLI | | I: Italy | I: Industry (user) | | Ditta Monicelli | | | |
| MONBS | | USA: United States of America | B: Bus | | Monroe Bus Service | | | |
| MONM | | US-NJ: USA, New Jersey | B: Bus | | Monmouth Bus Lines | | | |
| MONSEY | | USA: United States of America | B: Bus | | Monsey Tours | | | |
| MONT | MTR | USA: United States of America | R: Railway | | Montour Railroad Company | | | |
| MOP | | USA: United States of America | R: Railway | | | | | |
| MOSK | | RUS: Russia | C: City traffic | | Mosgortrans | | | |
| MOSKVITCH | | SU: Sovietunion | T: Type of car, lorry | | | | | |
| MOSOLF | | D: Germany | ??? | | MOSOLF SE & Co. KG | | | |
| MOSSH | | GB: United Kingdom of Great Britain and Northern Ireland | SH: Shipping company | | Moss Hutchinson Line Ltd. | | | |
| MOSTRA | | RUS: Russia | B: Bus | | Mostransavto | | | |
| MOTALA | | S: Sweden | M: Industry (railway maintenance) | | Motala Verkstad | | http://www.motalaverkstad.se/ | |
| MOVIA | | DK: Denmark | C: City traffic | | Trafikselskabet Movia | | | |
| MP | | USA: United States of America | R: Railway | | Missouri Pacific | | | |
| MPA | | USA: United States of America | R: Railway | | Maryland & Pennsylvania R.R. Co. | | | |
| MPEX | | USA: United States of America | R: Railway | | Motivepower Industries Inc. | | | |
| MPH | MPH, MP | NL: Netherlands | A: Aviation | | Martinair Holland N.V. | | | |
| MPILA | | PL: Poland | C: City traffic | | MZK Pila | | | |
| MPIX | | USA: United States of America | F: Industry (manufacturer) | | Motive Power Incorporated | | | |
| MPKO | | PL: Poland | C: City traffic | | MPK Olsztyn | | | |
| MPKOS | | PL: Poland | C: City traffic | | Miejskie Przedsiębiorstwo Komunikacji w Ostrowcu Świętokrzyskim | | https://pl.wikipedia.org/wiki/Miejskie_Przedsi%C4%99biorstwo_Komunikacji_w_Ostrowcu_%C5%9Awi%C4%99tokrzyskim | |
| MPKSLU | | PL: Poland | C: City traffic | | MPK Slupsk | | | |
| MPO | MP | RA: Argentina | R: Railway | | Metropolitano | | | |
| MPSB | | DDR: German Democratic Republic | N: Narrow gauge railway | | | | | |
| MPZ | | CZ: Czech Republic | V: Museum | | Muzeum Prumyslovych Zeleznic Mladejov | | | |
| MR | | ??? | Z: Scale | | Mission Railroad Spec. | | | |
| MRB | | D: Germany | R: Railway | | Mitteldeutsche Regiobahn | | | |
| MRC | MRS | USA: United States of America | R: Railway | | Manufacturers Ry. Co. of St. Louis | | | |
| MRCE | | NL: Netherlands | P: Pool (Leasing / wagon pool) | | Mitsui Rail Company Europe | | http://www.mrc-rail.com/europe.htm | |
| MRCEDL | | EU: European Union | P: Pool (Leasing / wagon pool) | | MRCE Dispolok | | | |
| MRL | | USA: United States of America | R: Railway | | Montana Raillink Inc. | | | |
| MRLT | | AUS: Australia | I: Industry (user) | | Mineral Resources Limited | | | |
| MRLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Mid-America Railcar Leasing | | | |
| MRR | | USA: United States of America | R: Railway | | Mid Atlantic R.R. Co., Inc. | | | |
| MRS | | I: Italy | R: Railway | | Military Railway Service | | | |
| MRSC | MRS | USA: United States of America | R: Railway | | Manufacturers Railway Co. | Anheuser-Busch, St.Louis | | |
| MRSL | | BR: Brazil | R: Railway | | MRS Logistica | | | |
| MRSR | MRS | USA: United States of America | R: Railway | | Manufacturers Railway Company of St. Louis | | | |
| MRSS | | BR: Brazil | R: Railway | | MRS Logistica S.A. | | | |
| MRTJ | | RI: Indonesia | C: City traffic | Jakarta | Mass Rapid Transit Jakarta | | | |
| MSA | | I: Italy | A: Aviation | | Mistral Air | Renamed to Poste Air Cargo in 2019 | https://en.wikipedia.org/wiki/Poste_Air_Cargo | |
| MSBA | | USA: United States of America | B: Bus | | Metropolitan Suburban Bus Authority | | | |
| MSCH | | D: Germany | V: Museum | | Museumsbahn Schönheide | | | |
| MSE | | USA: United States of America | R: Railway | | Mississippi Export Railroad | | | |
| MSM | | D: Germany | R: Railway | | MSM-Gruppe | | | |
| MSOS | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Miejskiej w Sosnowcu | | https://pl.wikipedia.org/wiki/Przedsi%C4%99biorstwo_Komunikacji_Miejskiej_w_Sosnowcu | |
| MSP | | E: Spain | I: Industry (user) | | Minero Siderurgica de Ponferrada | | | |
| MSR | | ET: Egypt | A: Aviation | | Egyptair | | | |
| MSRC | | USA: United States of America | R: Railway | | MidSouth Rail Corp. | | | |
| MSS | | S: Sweden | C: City traffic | Malmö | | | | |
| MSTAR | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacyjny w Starachowicach | | | |
| MSTC | | F: France | R: Railway | | Mamers StCalais | | | |
| MSTL | | USA: United States of America | R: Railway | | Minneapolis & St.Louis | | | |
| MSTM | | A: Austria | V: Museum | | Mödlinger Stadtverkehrsmuseum | | | |
| MSWI | | PL: Poland | C: City traffic | Świerklaniec | Przedsiębiorstwo Komunikacji Miejskiej, Międzygminna Sp. z o.o. | | | |
| MT | | E: Spain | R: Railway | | Metro de Mirandela | | | |
| MTA | | USA: United States of America | C: City traffic | New York | Metropolitan Transport Authority | | | |
| MTAB | | USA: United States of America | C: City traffic | | Metropolitan Transport Authority Bus Company | | | |
| MTALIB | | USA: United States of America | B: Bus | | MTA Long Island Bus | | | |
| MTAP | | CDN: Canada | O: Organisation | | Metropolitan Toronto Auxiliary Police | | | |
| MTAS | | N: Norway | ??? | | | | | |
| MTEG | | D: Germany | R: Railway | | Muldental Eisenbahnverkehrsgesellschaft mbH. | | | |
| MTHB | | CH: Switzerland | R: Railway | | Mittelthurgaubahn | | | |
| MTJ | | DK: Denmark | R: Railway | | Maribo - Torrig Jernbane (Torrigbanen) | 1924 - 1941 | | |
| MTL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | MTL London Northern | | | |
| MTM | | A: Austria | V: Museum | | Museumstramway Mariazell | | | |
| MTMI | | USA: United States of America | C: City traffic | Minneapolis, Saint Paul | Metro Transit (Minnesota) | | https://en.wikipedia.org/wiki/Metro_Transit_(Minnesota) | |
| MTNM | | AUS: Australia | I: Industry (user) | | Mount Newman Mining Railway | | | |
| MTR | | HK: Hong Kong | C: City traffic | | Mass Transit Railway | | | |
| MTRAM | M>TRAM | CDN: Canada | C: City traffic | Melbourne | M>Tram | The company was bought by Yarra Trams, Yarra Trams operates now the whole tramway network of Melbourne. | | |
| MTRC | | CDN: Canada | C: City traffic | | Montreal Transit Commission | | | |
| MTRR | M | USA: United States of America | R: Railway | | Montour Railroad | | | |
| MTRS | MTR | PRC: China | C: City traffic | Shenzhen | MTR Shenzhen | | | |
| MTS | | USA: United States of America | C: City traffic | | San Diego Metropolitan Transit System | | | |
| MTSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Max Transportation Service | | | |
| MTTU | | UA: Ukraine | C: City traffic | Mariupol | Mariupol Tram-Trolleybus Administration | | https://uk.wikipedia.org/wiki/%D0%A2%D1%80%D0%B0%D0%BD%D1%81%D0%BF%D0%BE%D1%80%D1%82_%D0%9C%D0%B0%D1%80%D1%96%D1%83%D0%BF%D0%BE%D0%BB%D1%8F | |
| MTW | | USA: United States of America | R: Railway | | Marinette, Tomahawk and Western Railroad | | | |
| MTWC | | CDN: Canada | C: City traffic | | Montreal Tramways Company | | | |
| MTZ | | MGL: Mongolia | R: Railway | | Mongolian Railways | | | |
| MUA | | I: Italy | ??? | | MUA - Mediterranea Umbro Aretina | 1956 - 1979 | | |
| MUFERGA | | E: Spain | O: Organisation | | Museo del Ferrocarril de Galicia | | | |
| MUHL | | D: Germany | I: Industry (user) | | Betriebe der Stadt Mühlheim | | | |
| MULC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Mulleys Coaches | | | |
| MULH | | F: France | C: City traffic | Mulhouse | Soléa | | | |
| MULLER | | CH: Switzerland | M: Industry (railway maintenance) | | Müller Gleisbau AG | | http://www.mueller-frauenfeld.ch/mueller-gleisbau-ag.html | |
| MUN | MVV | D: Germany | TA: Transport and Tariff Association | München | N=Traffic and Tariff Association ;G=Verkehrsverbund;H=Közlekedési szövetség; | Common livery of vehicles of the contracting partners | https://de.wikipedia.org/wiki/M%C3%BCnchner_Verkehrs-_und_Tarifverbund | |
| MUNI | | USA: United States of America | C: City traffic | San Francisco | Municipial Railway San Francisco | | | |
| MURAD | | RUS: Russia | B: Bus | Saratov | IP Muradaliev | | | |
| MUS | | CZ: Czech Republic | ??? | | | | | |
| MUSAK | | J: Japan | B: Bus | | Musashino Kotsu Bus Co. | | | |
| MVAB | | S: Sweden | F: Industry (manufacturer) | | Motala Verkstad AB | 1822 - | | |
| MVB | | D: Germany | C: City traffic | Magdeburg | | | | |
| MVG | | D: Germany | C: City traffic | Mannheim | | | | |
| MVGK | | A: Austria | B: Bus | | Mürztaler Verkehrs-Gesellschaft m.b.H. | | | |
| MVK | | H: Hungary | C: City traffic | | Miskolci Városi Közlekedési RT | | | |
| MVRTA | | USA: United States of America | C: City traffic | | Merrimack Valley Regional Transit Authority | | | |
| MVRY | | USA: United States of America | R: Railway | | The Mahoning Valley R.R. | | | |
| MVV | | FAN: Fantasy | R: Railway | | Magyar Virtuális Vasúttársaság | | | |
| MVVT | | CH: Switzerland | V: Museum | | Museumsbahn Vapeurs Val-de Travers | | | |
| MWAB | | S: Sweden | F: Industry (manufacturer) | | Midwaggon AB | 1998 - | | |
| MWAR | | PL: Poland | B: Bus | | Miejskie Zakłady Autobusowe w Warszawie | | https://pl.wikipedia.org/wiki/Miejskie_Zak%C5%82ady_Autobusowe_w_Warszawie | |
| MWB | | D: Germany | R: Railway | | Mittelweserbahn | | www.mittelweserbahn.de/ | |
| MWCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Midwest Railcar Corp. | | | |
| MWEJ | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji Wejherowo | | | |
| MWNR | | MW: Malawi | R: Railway | | Malawi Railways | | | |
| MWR | | USA: United States of America | R: Railway | | Muncie and Western R.R. Co. | | | |
| MWRY | | USA: United States of America | R: Railway | | Mineral Wells & Eastern Ry. Co. | | | |
| MWSB | | USA: United States of America | B: Bus | | Montgomery & West Side IBOA | | | |
| MYA | | MYA: Myanmar | R: Railway | | | | | |
| MYCA | | A: Austria | A: Aviation | | MyCargo Airlines | ACT Airlines (Turkish: ACT Havayollari) formerly branded as myCargo Airlines | https://en.wikipedia.org/wiki/Air_ACT#History | |
| MZ | | MK: North Macedonia | R: Railway | | Makedonski Zeleznici | | www.mz.com.mk/ | |
| MZA | | E: Spain | R: Railway | | | | | |
| MZKBB | | PL: Poland | C: City traffic | | MZK Bielsko0Biala | | | |
| MZKBE | | PL: Poland | B: Bus | Bełchatow | Miejski Zakład Komunikacji w Bełchatowie | | | |
| MZKJ | | PL: Poland | C: City traffic | Gdansk | Miejski Zakład Komunikacji Sp. Z O.O. w Jarosławiu | | | |
| MZKKK | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Kędzierzynie-Koźlu | | | |
| MZKOS | | PL: Poland | B: Bus | Ostrowiec Świętokrzyski | Miejski Zakład Komunikacji w Ostrowcu Świętokrzyskim | | | |
| MZKOW | MZK | PL: Poland | C: City traffic | Ostrów Wielkopolski | Miejski Zakład Komunikacji S.A., Ostrów Wielkopolski | | | |
| MZKSW | | PL: Poland | C: City traffic | | Miejski Zakład Komunalny sp. z o. o., Stalowa Wola | | https://www.mzk.stalowa-wola.pl/zaklad-komunikacji-miejskiej-zkm/ | |
| MZKT | | PL: Poland | C: City traffic | Torun | MZK Torun | | | |
| MZKW | | PL: Poland | C: City traffic | | MZK Warszawa | | | |
| MZKZG | | PL: Poland | C: City traffic | Zielona Góra | Miejski Zaklad Komunikacji w Zielonej Górze | | | |
| MZSGDA | | PL: Poland | C: City traffic | | Miejski Zaklad Komunikacji w Starogardzie Gdañskim | | | |
| MZUKW | | PL: Poland | C: City traffic | | Miejski Zak³ad Us³ug Komunalnych Walbrzych | | http://www.mzuk.com.pl/ | |
| MZYR | MZK | PL: Poland | C: City traffic | Żyrardów | Miejski Zakład Komunikacji Żyrardów | 1978 - 2009 | | |
| MZYW | | PL: Poland | C: City traffic | | MZK Zywiec | | | |
| N | VAG | D: Germany | C: City traffic | Nürnberg | Verkehrs-Aktiengesellschaft Nürnberg | | https://en.wikipedia.org/wiki/Verkehrs-Aktiengesellschaft_Nürnberg | |
| NAAF | | NAM: Namibia | Y: Military | | Namibian Air Force | | | |
| NACB | NCB | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | National Coal Board | | | |
| NACCO | | F: France | P: Pool (Leasing / wagon pool) | | NACCO SAS | | | |
| NAG | | J: Japan | R: Railway | | Nagano Electric Railway | | | |
| NAGA | | J: Japan | C: City traffic | Nagasaki | | | | |
| NAGAB | | J: Japan | B: Bus | | Nagasaki Bus | | | |
| NAGADEN | | J: Japan | B: Bus | | Nagaden Bus | | | |
| NAGARA | | J: Japan | R: Railway | | Nagaragawa Railway | | | |
| NAGOYA | | J: Japan | C: City traffic | Nagoya | | | | |
| NAGOYAB | | J: Japan | B: Bus | | Nagoya Bus Co. | | | |
| NAHA | | J: Japan | B: Bus | | Naha Bus Co. | | | |
| NAHX | | USA: United States of America | I: Industry (user) | | North American Car Corp. | | | |
| NAKO | | J: Japan | B: Bus | | Nara Kotsu Bus Lines Co. | beongs to Kintetsu Bus Holdings Co. | https://en.wikipedia.org/wiki/Nara_Kotsu_Bus_Lines | |
| NAMC | | J: Japan | A: Aviation | | Nihon Aircraft Manufacturing Corporation | | | |
| NAN | | J: Japan | R: Railway | | Nankai Electric Railway Co., Ltd. | | | |
| NANBU | | J: Japan | B: Bus | | Nanbu Bus | | | |
| NANCY | STAN | F: France | C: City traffic | Nancy | Compagnie Générale Française des Transports et Entreprises | The company managed public transport networks in several French cities. | | |
| NANGOK | | J: Japan | B: Bus | Kagoshima | Nangoku Kotsu | | https://nangoku-kotsu.com/ | |
| NANJ | | PRC: China | C: City traffic | | Nanjing Metro | | | |
| NANSYUB | | J: Japan | B: Bus | | Nansyu Bus | | https://nansyu-bus.co.jp/ | |
| NAPOLI | ANM | I: Italy | C: City traffic | Napoli | Azienda Napoletana Mobilitá SPA. | | | |
| NAR | | CDN: Canada | R: Railway | | Northern Alberta Railways | | | |
| NARA | | J: Japan | R: Railway | | Nara Electric Railway | | | |
| NARKE | | USA: United States of America | B: Bus | | Newark & Elizabeth Independent Bus Operator | | | |
| NARKWO | | USA: United States of America | B: Bus | | Newark & West Orange IBOA | | | |
| NASA | | USA: United States of America | I: Industry (user) | | | | | |
| NAT | | USA: United States of America | A: Aviation | | National Air Transport | The predecessor of United Airlines | | |
| NATAN | | PL: Poland | B: Bus | Płaza | Firma "Natan" Bogdan Głogowski | | | |
| NATB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | BAT Group | | | |
| NATL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | National | | | |
| NATX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | North Americal Tank Line | | | |
| NAUM | | D: Germany | C: City traffic | Naumburg | | | | |
| NBDS | | NL: Netherlands | ??? | | North Brabant German Railway Company | Dorog, Sand mine | | |
| NBE | NBEG | D: Germany | R: Railway | | Nordbayerische Eisenbahn GmbH | | www.nbe-bahn.de | |
| NBEP | | PL: Poland | R: Railway | | NBE Rail Polska | Owned by NBE Rail: Nordbayerische Eisenbahn | | |
| NBER | | USA: United States of America | R: Railway | | Nittany & Bald Eagle | | | |
| NBJ | | S: Sweden | R: Railway | | Nora - Bergslags Järnväg | 1905 - 1979 | | |
| NBM | | NL: Netherlands | ??? | | Nederlandsche Buurtspoorweg Maatschappij / Dutch Localrailway Company | | | |
| NBOR | NEKN | H: Hungary | N: Narrow gauge railway | | Nagybörzsöny | | | |
| NBSR | | CDN: Canada | R: Railway | | New Brunswick Southern Ry. Co. Ltd. | | | |
| NC | | USA: United States of America | R: Railway | | Nashville Chattanooga & St. Louis Ry. | | | |
| NCA | | J: Japan | A: Aviation | | Nippon Cargo Airlines | | | |
| NCAR | NCA | RA: Argentina | R: Railway | | Nuevo Central Argentina | | | |
| NCB | | USA: United States of America | R: Railway | | Nevada Copper Belt Ry. | | | |
| NCDOT | | USA: United States of America | O: Organisation | | North Carolina DOT | | | |
| NCIR | | USA: United States of America | R: Railway | | New Castle Industrial R.R. | | | |
| NCK | | H: Hungary | N: Narrow gauge railway | | Nagycenk | | | |
| NCL | | USA: United States of America | C: City traffic | | National City Lines | | | |
| NCLX | | USA: United States of America | I: Industry (user) | | Nova Chemicals Ltd. | | | |
| NCR | | USA: United States of America | R: Railway | | Northern Central Railway | | | |
| NCRC | | USA: United States of America | R: Railway | | Nebraska Central Railroad Company | | | |
| NCS | | NL: Netherlands | R: Railway | | Dutch Central Railway Company | | | |
| NCSTL | | USA: United States of America | R: Railway | | Nashville, Chattanooga and St. Louis | | | |
| NCTD | | US-CA: USA, California | C: City traffic | | North County Transit District (San Diego) | | https://en.wikipedia.org/wiki/North_County_Transit_District | |
| NCVA | | USA: United States of America | R: Railway | | North Carolina & Virginia R.R. Co. | | | |
| NDCR | | USA: United States of America | R: Railway | | Northampton Development Center Railroad | | | |
| NDEM | | MEX: Mexico | R: Railway | | Ferrocarriles Nacionales de Mexico | | | |
| NE | | D: Germany | R: Railway | | Neusser Eisenbahn | | www.nd-haefen.de/ | |
| NEB | | D: Germany | R: Railway | | Niederbarnimer Eisenbahn | | | |
| NECK | | D: Germany | I: Industry (user) | | Neckarwerke | | | |
| NECR | | USA: United States of America | R: Railway | | New England Central | | | |
| NEDTRAIN | | NL: Netherlands | ??? | | | | | |
| NEG | | D: Germany | R: Railway | | Norddeutschen Eisenbahn-Gesellschaft | | | |
| NEI | NE | I: Italy | M: Industry (railway maintenance) | | | | | |
| NEOMAN | | D: Germany | T: Type of car, lorry | | Neoman Bus GmbH | Neoman Bus GmbH, also known as Neoman Bus Group, was a bus, trolleybus and coach manufacturer in Germany, created when MAN Nutzfahrzeuge AG acquired Neoplan Bus GmbH in 2001 | https://en.wikipedia.org/wiki/Neoman_Bus | |
| NEOP | | D: Germany | T: Type of car, lorry | | Neoplan | | | |
| NEOPUL | | P: Portugal | M: Industry (railway maintenance) | | Neopul | | | |
| NEOR | | USA: United States of America | C: City traffic | New Orleans | | | | |
| NERR | | USA: United States of America | R: Railway | | Nashville & Eastern | | | |
| NESA | | D: Germany | R: Railway | | Eisenbahn-Betriebsgesellschaft Neckar-Schwarzwald-Alb mbH | | | |
| NETLOG | | D: Germany | ??? | | Netlog | | | |
| NETT | | N: Norway | B: Bus | | Nettbuss | | https://en.wikipedia.org/wiki/Vy_Buss | |
| NEUSS | | D: Germany | C: City traffic | Neuss | Stadtwerke Neuss GmbH (Verkehrsbetriebe) | | | |
| NEUW | | CH: Switzerland | M: Industry (railway maintenance) | | Neuweiler AG | | https://www.neuweiler-ag.ch/de/kontakt.html | |
| NEW | | D: Germany | N: Narrow gauge railway | | | | | |
| NEWAG | | PL: Poland | F: Industry (manufacturer) | | Newag | | | |
| NEWCO | | I: Italy | I: Industry (user) | | Newco S.r.l. | Hat den Anschlußgleis zum Stahlwerk betrieben. | | |
| NEWG | | USA: United States of America | R: Railway | | New Georgia Railroad | | | |
| NEWM | | D: Germany | C: City traffic | Mönchengladbach | NEW mobil und aktiv Mönchengladbach | | https://de.wikipedia.org/wiki/NEW_AG | |
| NEX | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | National Express | | | |
| NFD | | USA: United States of America | R: Railway | | Norfolk, Franklin and Danville Railway | | | |
| NFJ | | DK: Denmark | R: Railway | | Nordfynske Jernbane (Bogensebanen) | 1882 - 1966 | | |
| NFTA | | USA: United States of America | C: City traffic | Buffalo | Niagara Frontier Transportation Authority | | | |
| NFTS | | USA: United States of America | C: City traffic | Buffalo | Niagara Frontier Transit System | 1950 - 1967 | | |
| NGET | | RUS: Russia | C: City traffic | Nizhny Novgorod | Nizhegorodelektrotrans | | | |
| NGSH | | D: Germany | RO: Railway operator | | Nahverkehrsgesellschaft Schleswig-Holstein | | | |
| NH | | USA: United States of America | R: Railway | | New Heaven | | | |
| NHC | | CZ: Czech Republic | ??? | | | | | |
| NHIR | | USA: United States of America | R: Railway | | New Hope & Ivyland Railroad Company | | | |
| NHN | | USA: United States of America | R: Railway | | New Hampshire Northcoast Corp. | | | |
| NHRR | | USA: United States of America | R: Railway | | New Hope & Ivyland Rail Road | | | |
| NHV | NHVT | USA: United States of America | R: Railway | | New Hampshire and Vermont Railroad | | | |
| NIAG | | D: Germany | R: Railway | | Niederrheinische Verkehrsbetriebe AG | | www.niag-online.de/ | |
| NIAX | | USA: United States of America | R: Railway | | Niagara & Western New York Railroad | | | |
| NICD | | USA: United States of America | R: Railway | Chicago | Northern Indiana Commuter Transportation District | | | |
| NICE | TN | F: France | C: City traffic | Nice | | | | |
| NICEB | NICE | USA: United States of America | C: City traffic | | Nassau Inter-County Express | | https://en.wikipedia.org/wiki/Nassau_Inter-County_Express | |
| NIDA | | D: Germany | R: Railway | | Kleinbahn Niebüll-Dagebüll | | | |
| NIEP | | D: Germany | B: Bus | | Omnibusbetrieb Nieporte GmbH | | | |
| NIGA | | J: Japan | R: Railway | | Niishikigawa Railway | | http://en.wikipedia.org/wiki/Nishikigawa_Railway_Nishikigawa_Seiryu_Line | |
| NIHON | | J: Japan | B: Bus | | Nihon Kotsu Co. | | | |
| NILG | | IND: India | N: Narrow gauge railway | | Nilgiri Rack Railway | | | |
| NIMX | | USA: United States of America | R: Railway | | Naparano Iron and Metal Co. | | | |
| NIPP | | J: Japan | R: Railway | | Nippon Express Co. | | http://www.nipponexpress.com/ | |
| NIS | | J: Japan | R: Railway | | Nishi-Nippon Railroad Co., Ltd (Nishitetsu) | | | |
| NISB | | J: Japan | B: Bus | | Nishitetsu Bus | | | |
| NISD | | J: Japan | T: Type of car, lorry | | Nissan Diesel Motor Co. | | | |
| NISEKO | | J: Japan | B: Bus | | Niseko Bus Co. | | | |
| NISHIT | | J: Japan | B: Bus | | Nishi Tokyo Bus Co., Ltd. | | https://en.wikipedia.org/wiki/Nishi_Tokyo_Bus | |
| NISR | | J: Japan | R: Railway | | Niigata Seaside Railway | Freight-only railway line, 1970 - 2002 | | |
| NISSAN | | J: Japan | T: Type of car, lorry | | | | | |
| NISX | | ??? | ??? | | | | | |
| NJ | | CDN: Canada | R: Railway | | Napierville Junction Ry. Co. | | | |
| NJA | | J: Japan | A: Aviation | | New Japan Aviation | | | |
| NJCT | | USA: United States of America | C: City traffic | New Jersey | North Jersey Commuter Transportation | | | |
| NJDK | | DK: Denmark | R: Railway | | Nordjyske Jernbaner A/S | 2001 - | | |
| NJDOT | | USA: United States of America | B: Bus | | New Jersey DOT | | | |
| NJRX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | North Jersey Rail Leasing | | | |
| NJSP | | USA: United States of America | O: Organisation | | New Jersey State Police | | | |
| NJST | | USA: United States of America | B: Bus | | North Jersey Surface Transit | | | |
| NJT | | USA: United States of America | C: City traffic | | New Jersey Transit | | | |
| NJTA | | US-NJ: USA, New Jersey | C: City traffic | | North Jersey Transit Authority | | | |
| NJTOUR | | US-NJ: USA, New Jersey | B: Bus | | NJ Tours | NJ Tours provided charter and tour service until it was ruled that state agencies can not compete with the private sector for this business. | | |
| NK | | J: Japan | R: Railway | | Niigata Kotsu Ltd. | | | |
| NKAKR | | PL: Poland | B: Bus | Kruszwica | Nadgoplańska Bus Transport in Kruszwica | | https://pl.wikipedia.org/wiki/Nadgopla%C5%84ska_Komunikacja_Autobusowa_w_Kruszwicy | |
| NKAN | | J: Japan | B: Bus | | Nishitetsu Kanko Bus | | | |
| NKEIB | | J: Japan | B: Bus | | New Keisei Bus | | | |
| NKJ | | DK: Denmark | R: Railway | | Nakskov - Kragenæs Jernbane (Kragenæsbanen) | 1915 - 1967 | | |
| NKP | | USA: United States of America | R: Railway | | New York, Chicago & St. Louis R.R. (Nickel Plate Road) | | | |
| NLB | | HK: Hong Kong | B: Bus | Hong Kong | New Lantau Bus | | | |
| NLE | | D: Germany | R: Railway | | Niederlausitzer Eisenbahn | | | |
| NLG | | USA: United States of America | R: Railway | | North Louisiana & Gulf R.R. Co. | | | |
| NME | | D: Germany | R: Railway | | Neukölln-Mittenwalder Eisenbahn-Gesellschaft AG | | www.neukoelln-mittenwalder-eisenbahn.de/ | |
| NMEXT | | USA: United States of America | B: Bus | | New Mexico Transportation | A Grayhound Subsidiary | | |
| NMPP | | F: France | I: Industry (user) | | Nouvelles Messageries de la Presse Parisienne | | | |
| NN | | USA: United States of America | R: Railway | | Nevada Northern Railway Co. | | | |
| NNG | | RUS: Russia | C: City traffic | | | | | |
| NNKB | | J: Japan | B: Bus | | Narashino New Keisei Bus | | | |
| NO | | USA: United States of America | R: Railway | | | | | |
| NOB | | D: Germany | R: Railway | | Nord-Ostsee-Bahn | | | |
| NOGA | | J: Japan | R: Railway | | Nogami Electric Railway | | | |
| NOGE | | E: Spain | T: Type of car, lorry | | Nogebus | | https://en.wikipedia.org/wiki/Nogebus | |
| NOGR | | H: Hungary | B: Bus | | Nógrád Volán | | | |
| NOK | | T: Thailand | A: Aviation | | Nok Air | | https://en.wikipedia.org/wiki/Nok_Air | |
| NOKL | | USA: United States of America | R: Railway | | Northwestern Oklahoma | | | |
| NOOR | | NL: Netherlands | R: Railway | | NoordNed | | | |
| NOPB | | USA: United States of America | R: Railway | | New Orleans Public Belt R.R. | | | |
| NOPS | | USA: United States of America | C: City traffic | | New Orleans Public Service Inc. | | | |
| NOR | | E: Spain | R: Railway | | Norte | | | |
| NORA | | D: Germany | P: Pool (Leasing / wagon pool) | | Northrail GmbH | | | |
| NORB | NBE | D: Germany | RO: Railway operator | | Nordbahn Eisenbahngesellschaft | | | |
| NORBV | | USA: United States of America | B: Bus | | North Boulevard IBOA | | | |
| NORC | | I: Italy | R: Railway | | NordCargo | | | |
| NORD | | F: France | R: Railway | | | | | |
| NORK | | S: Sweden | C: City traffic | Norrköping | | Veolia is the operator for the tram lines in Norrköping, but the infrastructure and the vehicles are owned by the community. | | |
| NORR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Northern Rail Ltd | Northern Rail is a train operating company that has operated local services in the north of England since 2004. The franchise was won by a consortium formed of NedRailways (the English unit of Nederlandse Spoorwegen, the state-owned train operating company of the Netherlands) and Serco, an international operator of public transport systems. This consortium had already won the contract to operate the Merseyrail network earlier in 2003. | http://www.northernrail.org/ | |
| NORTA | | USA: United States of America | C: City traffic | | New Orleans Regional Transit Authority | | | |
| NORTRAN | | USA: United States of America | C: City traffic | Chicago | North Suburban Mass Transit District | | | |
| NORWALK | | USA: United States of America | C: City traffic | | Norwalk Transit District | | | |
| NOSE | | J: Japan | R: Railway | | Nosé Electric Railway | Fully owned by the Hankyu Railway | | |
| NOTM | | USA: United States of America | R: Railway | | New Orleans, Texas & Mexico | | | |
| NOTO | | J: Japan | R: Railway | | Noto Railway | | http://en.wikipedia.org/wiki/Noto_Railway | |
| NOVABUS | | USA: United States of America | T: Type of car, lorry | | NovaBus/TMC | | | |
| NOVOG | | A: Austria | R: Railway | | Niederösterreichische Verkehrsorganisationsges.m.b.H | | https://www.noevog.at/ | |
| NOX | | USA: United States of America | I: Industry (user) | | National Oil Co. | | | |
| NOZ | | N: Norway | A: Aviation | | Norwegian Air Shuttle | | https://en.wikipedia.org/wiki/Norwegian_Air_Shuttle | |
| NP | | USA: United States of America | R: Railway | | Northern Pacific | | | |
| NPDG | | D: Germany | SH: Shipping company | | Neue Pellwormer Dampfschiffahrts GmbH | | https://de.wikipedia.org/wiki/Neue_Pellwormer_Dampfschiffahrtsgesellschaft | |
| NPMB | | DK: Denmark | R: Railway | | Næstved - Præstø - Mern Banen (Præstøbanen) | 1900 - 1961 | | |
| NPMR | | USA: United States of America | TOY: Toy, modell | | Nevada Pacific | Modell railroad | | |
| NPR | | USA: United States of America | R: Railway | | Northern Plains Railroad | | | |
| NPW | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | National Power Rail | | | |
| NR | | AUS: Australia | R: Railway | | National Rail Corporation | | | |
| NRC | | WAN: Nigeria | RS: State Railway | | Nigerian Railway Corporation | | https://en.wikipedia.org/wiki/Nigerian_Railway_Corporation | |
| NRDX | | USA: United States of America | L: Logistics company | | Nordic Warehouse Inc. | | | |
| NREX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | National Railway Equipment Co. | | | |
| NRFAB | | S: Sweden | P: Pool (Leasing / wagon pool) | | Nordic Re-Finance AB | 2006 - | | |
| NRI | | USA: United States of America | R: Railway | | Nebkota Railway Inc. | | | |
| NRJ | | DK: Denmark | R: Railway | | Nakskov - Rødby Jernbane | 1926 - 1954 | | |
| NRLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Bombardier Capital Rail Incorporated | | | |
| NRS | | NL: Netherlands | ??? | | Dutch Rhine Railway Company | | | |
| NRSG | NRS | D: Germany | R: Railway | | Nordic Rail Service GmbH | | http://www.nordic-rail-service.de/ | |
| NRTX | | USA: United States of America | R: Railway | | Music City Star | Nashville | | |
| NRW | | D: Germany | B: Bus | | Nord-Rhein-Westfalien design | Many bus companies using the same paint scheme~ | | |
| NRZ | | ZW: Zimbabwe | R: Railway | | National Railways of Zimbabwe | | | |
| NS | | NL: Netherlands | R: Railway | | Nederlandse Spoorwegen | | http://www.ns.nl/ | |
| NSA | NS | USA: United States of America | R: Railway | | Norfolk Southern Railway Company | | | |
| NSACZ | | PL: Poland | C: City traffic | | Miejskie Przedsiębiorstwo Komunikacyjne w Nowym Sączu | | https://pl.wikipedia.org/wiki/Miejskie_Przedsi%C4%99biorstwo_Komunikacyjne_w_Nowym_S%C4%85czu | |
| NSB | | N: Norway | ??? | | | | | |
| NSBA | | D: Germany | C: City traffic | Neunkirchen | Neunkirchner Strassenbahn | | | |
| NSC | | NL: Netherlands | ??? | | NS Cargo | | | |
| NSE | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Network SouthEast | Network SouthEast (NSE) was a sector of British Rail that principally operated commuter trains in the London area and inter-urban services in the densely populated South-East of England. It was formed in 1986 when BR was sectorised (see British Rail brand names for a full history). In the privatisation of British Rail on 1st April 1994 it was broken into a number of franchises. | | |
| NSHU | | J: Japan | C: City traffic | | Saitama New Urban Transit Co | | | |
| NSIB | | RUS: Russia | C: City traffic | Novosibirsk | | | | |
| NSKK | | J: Japan | M: Industry (railway maintenance) | | Nippon Speno KK | | | |
| NSL | | USA: United States of America | R: Railway | | Norwood & St. Lawrence R.R. Co. | | | |
| NSME | | ??? | Z: Scale | | NSME Screensaver | | | |
| NSMT | | US-IL: USA, Illinois | C: City traffic | Chicago | Northwest Suburban Mass Transit | | | |
| NSO | NS | USA: United States of America | R: Railway | | Norfolk Southern R.R. | The old Norfolk Southern company, before the merger with Norfolk Western. | | |
| NSTCM | | CH: Switzerland | R: Railway | | Nyon - St-Cergue - Morez | | | |
| NSW | | AUS: Australia | R: Railway | | New South Wales Government Railways | | | |
| NSWT | | AUS: Australia | R: Railway | | New South Wales TrainLink | | | |
| NTARG | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Nowym Targu | | | |
| NTARI | | I: Italy | M: Industry (railway maintenance) | | Notari S.r.l. Construzioni Speciali | | | |
| NTC | | USA: United States of America | R: Railway | | Northern Transit Co. | | | |
| NTOG | NOR | N: Norway | P: Pool (Leasing / wagon pool) | | Norke tog AS | | https://www.norsketog.no | |
| NTWR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Network Rail | | | |
| NTYU | | J: Japan | C: City traffic | Tokyo | New Transit Yurikamome | formerly Tokyo Waterfront New Transit Waterfront Line | https://en.wikipedia.org/wiki/Yurikamome | |
| NUMA | | J: Japan | N: Narrow gauge railway | | Numajiri Railway | | | |
| NVA | | DDR: German Democratic Republic | Y: Military | | | | | |
| NVAG | | D: Germany | R: Railway | | Nordfriesische Verkehrsbetriebe | | | |
| NVG | | D: Germany | B: Bus | | NVG Omnibus-Betriebsgesellschaft mbH | | https://wuerzburgwiki.de/wiki/NVG | |
| NVH | | D: Germany | B: Bus | | Nahverkehr Hohenlohekreis | | | |
| NVK | | DDR: German Democratic Republic | C: City traffic | Karl-Marx Stadt | | | | |
| NVO | | D: Germany | B: Bus | | Nahverkehr Ostwestfalen GmbH | | | |
| NVR | | CDN: Canada | R: Railway | | Northern Vermont Railroad | | | |
| NVRO | NVR | DDR: German Democratic Republic | B: Bus | | Nahverkehr Rostock | | | |
| NVRR | | USA: United States of America | R: Railway | | Napa Valley Railroad | | | |
| NVS | | D: Germany | C: City traffic | Schwerin | | | | |
| NVV | | D: Germany | C: City traffic | Viersen | Niederrheinwerke Viersen GmbH | | | |
| NW | | USA: United States of America | R: Railway | | Norfolk and Western | | | |
| NWA | | ??? | A: Aviation | | | | | |
| NWB | | D: Germany | R: Railway | | Nordwest-Bahn | | | |
| NWE | | USA: United States of America | A: Aviation | | Northwest Airlines | | | |
| NWEB | NWB | D: Germany | R: Railway | | Niederweserbahn | | | |
| NWFB | | HK: Hong Kong | C: City traffic | | New World First Bus Services Limited | | | |
| NWP | | USA: United States of America | R: Railway | | Northwestern Pacific Railroad Company | | | |
| NWR | | USA: United States of America | R: Railway | | Nashville and Western Railroad Corporation | | | |
| NWX | | USA: United States of America | RO: Railway operator | | North Western Refrigerator Line | | | |
| NX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | National Car Co. | | | |
| NXEA | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | National Express East Anglia | | https://en.wikipedia.org/wiki/National_Express_East_Anglia | |
| NXEC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | National Express East Coast | | | |
| NYA | | USA: United States of America | R: Railway | | New York & Atlantic | | | |
| NYAS | | US-NY: USA, New York | B: Bus | New York | New York Airport Service | | | |
| NYBS | | UA: Ukraine | B: Bus | | New York University | | | |
| NYC | | USA: United States of America | R: Railway | | New York Central | | | |
| NYCDOC | | US-NY: USA, New York | O: Organisation | | New York City Department of Corrections | | | |
| NYCFD | | US-NY: USA, New York | O: Organisation | | New York City Fire Department | | | |
| NYCH | | USA: United States of America | R: Railway | | New York Cross Harbor | | | |
| NYCS | | USA: United States of America | C: City traffic | | MTA New York City Subway | | | |
| NYCSO | | US-NY: USA, New York | O: Organisation | | New York City Sheriff's Office | | | |
| NYCTPD | | US-NY: USA, New York | O: Organisation | | New York City Transit Police | Merged into NYPD in 1995 | | |
| NYC_ | | USA: United States of America | C: City traffic | New York | | | | |
| NYGL | | USA: United States of America | R: Railway | | New York & Greenwood Lake Ry. | | | |
| NYIR | | H: Hungary | N: Narrow gauge railway | | Nyírvidék | | | |
| NYKEAN | | USA: United States of America | B: Bus | | New York, Keansburg, & Long Branch Bus Co. | | | |
| NYLE | | USA: United States of America | R: Railway | | New York & Lake Erie | | | |
| NYLEC | | PL: Poland | B: Bus | Piekary Śląskie | Usługi Transportowe oraz przewóz osób autobusem Eugeniusz Nylec | | | |
| NYOW | | ??? | ??? | | | | | |
| NYPD | | US-NY: USA, New York | O: Organisation | | New York City Police Department | | | |
| NYPDAP | | US-NY: USA, New York | O: Organisation | | New York City Police Department Auxilary Police | | | |
| NYSA | MZK | PL: Poland | C: City traffic | | MZK Nysa | | | |
| NYSW | | USA: United States of America | R: Railway | | New York, Susquehanna and Western Railroad Company | | | |
| NYUNI | | USA: United States of America | B: Bus | | New York University | | | |
| NZ | | NL: Netherlands | B: Bus | | NZH | | | |
| NZD | | RUS: Russia | R: Railway | | Nikolai Railway | | | |
| NZH | NZHSTM | NL: Netherlands | ??? | | Noord-Zuid-Hollandsche Stoomtramweg-Maatschappij | | | |
| NZR | | NZ: New Zealand | R: Railway | | New Zealand Railways | | | |
| OAD | | NL: Netherlands | B: Bus | | | | | |
| OAF | | A: Austria | T: Type of car, lorry | | Österreichische Automobil-Fabrik | Original name: Österreichische Austro-Fiat | https://en.wikipedia.org/wiki/%C3%96AF | |
| OAK | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Oakway | | | |
| OAKT | | CDN: Canada | C: City traffic | | Oakville Transit | | | |
| OBA | | N: Norway | R: Railway | | Ofotbanen | | | |
| OBB | | A: Austria | R: Railway | | Österreichische Budesbahn | | | |
| OBBL | | USA: United States of America | B: Bus | | Orange & Black Bus Lines | | | |
| OBBP | | A: Austria | B: Bus | | ÖBB Postbus | | | |
| OBBPB | | A: Austria | B: Bus | | Österreichische Postbus AG | | | |
| OBS | | D: Germany | V: Museum | | | | | |
| OBSH | OBS | DDR: German Democratic Republic | B: Bus | Halle | | | | |
| OBSK | OBS | D: Germany | B: Bus | | Omnibusbetrieb Saalkreis GmbH | | | |
| OC | | USA: United States of America | R: Railway | | Oregon & California Railroad | | | |
| OCEANC | | US-NJ: USA, New Jersey | C: City traffic | Toms River, NJ | Ocean County Department of Transportation Services | | | |
| OCFA | | DZ: Algeria | R: Railway | | SNCF: Office des Chemins de fer Algériens | | | |
| OCG | | I: Italy | R: Railway | | Oceanogate Italia srl | | | |
| OCRR | | CDN: Canada | R: Railway | | Ottawa Central Ry. | | | |
| OCTA | | US-CA: USA, California | C: City traffic | | Orange County Transportation Authority | | https://en.wikipedia.org/wiki/Orange_County_Transportation_Authority | |
| OCTD | | USA: United States of America | B: Bus | | Orange County Transit District | | | |
| OCTR | | CDN: Canada | C: City traffic | Ottawa | OC Transpo | | | |
| ODAK | | J: Japan | R: Railway | | Odakyu | | | |
| ODAKB | | J: Japan | B: Bus | | Odakyu Bus | | | |
| ODAKHH | | J: Japan | B: Bus | | Odakyu Hakone Highway Bus Co. | | | |
| ODEG | | D: Germany | R: Railway | | Ostdeutsche Eisenbahn GmbH | | | |
| ODES | | UA: Ukraine | C: City traffic | Odessa | | | | |
| ODET | | A: Austria | A: Aviation | Odessa | KP Odesmiskelektrotrans | | https://en.wikipedia.org/wiki/Trams_in_Odesa | |
| OEBB | | CH: Switzerland | R: Railway | | Oensingen-Balsthal-Bahn | | http://www.oebb.ch/ | |
| OEG | | D: Germany | C: City traffic | Mannheim | Oberrheinische Eisenbahngesellschaft (Mannheim) | | | |
| OEPOST | | A: Austria | B: Bus | | Österreichische Bundespost: Postbus | | | |
| OESTE | | E: Spain | R: Railway | | | | | |
| OGEG | | A: Austria | V: Museum | | Österreichische Gesellschaft für Eisenbahngeschichte | | | |
| OHCR | | USA: United States of America | R: Railway | | Ohio Central Railroad Inc | | | |
| OHE | | D: Germany | R: Railway | | Osthannoversche Eisenbahnen | | www.ohe-transport.de/ | |
| OHESP | OHE-SP | D: Germany | R: Railway | | Osthavelländische Eisenbahnen Berlin-Spandau AG | | | |
| OHJ | | DK: Denmark | R: Railway | | Odsherred Jernbane (Odsherredsbanen) | 1899 - 2003 | | |
| OHK | | HK: Hong Kong | A: Aviation | | Oasis Hong Kong Airlines | | | |
| OHYU | | J: Japan | I: Industry (user) | | Mitshubishi Ohyubari Railway | | | |
| OIG | | J: Japan | R: Railway | | Oigawa Railway | | | |
| OILT | | RO: Romania | I: Industry (user) | | Oil Terminal Constanta | | | |
| OIM | | USA: United States of America | I: Industry (user) | | Oliver Iron Mining | | | |
| OJJ | ØJJ | DK: Denmark | R: Railway | | Østjydske Jernbane | 1876 - 1881 | | |
| OK | | B: Belgium | I: Industry (user) | | O&K | | | |
| OKAYAMA | | J: Japan | C: City traffic | Okayama | Okayama Electric Tramway | | https://en.wikipedia.org/wiki/Okayama_Electric_Tramway | |
| OKD | | CZ: Czech Republic | ??? | | | | | |
| OKDJ | | DK: Denmark | R: Railway | | Odense - Kerteminde - Dalby Jernbane (Kertemindebanen) | 1900 - 1914 | | |
| OKIM | | J: Japan | C: City traffic | | Okinawa Urban Monorail | | | |
| OKMJ | | DK: Denmark | R: Railway | | Odense - Kerteminde - Martofte Jernbane (Kertemindebanen) | 1914 - 1966 | | |
| OLDHCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Oldham Corporation Passenger Transport | | | |
| OLIC | | F: France | M: Industry (railway maintenance) | | Olichon S.A.S. | | | |
| OLOM | DPMO | CZ: Czech Republic | C: City traffic | Olomouc | Dopravni podnik mesta Olomouce | | | |
| OLYMP | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Olympus Bus & Coach Limited | | | |
| OLYMPIA | | USA: United States of America | B: Bus | | Olympia Trails | A Coach USA company | | |
| OMA | | OM: Oman | A: Aviation | | Oman Air | | https://en.wikipedia.org/wiki/Oman_Air | |
| OMAT | | USA: United States of America | C: City traffic | Omaha (NE) | Metro Area Transit | | https://en.wikipedia.org/wiki/Metro_Transit_(Omaha) | |
| OMB | | DK: Denmark | R: Railway | | Odense - Middelfart Banen (Nordvestfyenske Jernbane) | 1911 - 1966 | | |
| OME | | D: Germany | R: Railway | | Ostmecklenburgische Eisenbahn | | | |
| OMI | | J: Japan | R: Railway | | Omi Railroad Co., Ltd. | Subsidiary of the Seibu Railway Co. Ltd. | | |
| OMID | | CDN: Canada | R: Railway | | Ontario Midland Railroad Corporation | | | |
| OMLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | OmniTRAX Leasing, Ltd. | | | |
| OMNITECH | | PL: Poland | B: Bus | Gliwice | Omnitech Sp. z o. o | | | |
| OMNX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | OmniSource Corp. | | | |
| OMUS | | D: Germany | V: Museum | | Oberleitungbus-Museum Solingen | | | |
| ONCF | | MA: Morocco | R: Railway | | Office National des Chemin de Fer / Moroccan National Railways | | | |
| ONE | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | one (London Eastern Railway Ltd,) | ‘one’ is the brand name of London Eastern Railway Ltd, which operates local, suburban and express services from London Liverpool Street in the City of London to East and North London, Essex, Hertfordshire, Cambridgeshire and East Anglia, otherwise known as the Greater Anglia network. ‘one’ is part of the National Express Group. The Greater Anglia network was awarded to a single operator as part of a drive to reduce the number of train companies operating to major termini, in an effort to improve integration between services and reliability. On April 1, 2004 ‘one’ took over all services formerly operated by Anglia Railways and First Great Eastern, as well as the ‘West Anglia’ services of WAGN. The company is now the sole passenger operator on most of the Great Eastern | http://www.onerailway.com/ | |
| ONFJ | | DK: Denmark | R: Railway | | Odense - Nørre Broby - Fåborg Jernbane (Brobybanen) | 1906 - 1954 | | |
| ONR | | ??? | ??? | | | | | |
| ONRAIL | | D: Germany | ??? | | OnRail | | | |
| ONS | | D: Germany | B: Bus | Peine | Omnibus Nahverkehr Service GmbH | | https://www.ons-peine.de/ueber-uns/ | |
| ONT | | CDN: Canada | R: Railway | | Ontario Northland Railway | | | |
| ONWR | | USA: United States of America | R: Railway | | Oregon & Northwestern Railroad | | | |
| OOST | | NL: Netherlands | R: Railway | | Oostnet | | | |
| OPEL | | D: Germany | T: Type of car, lorry | | | | | |
| OPKS | | PL: Poland | B: Bus | | PKS Opole | | | |
| OPOLE | | PL: Poland | C: City traffic | Opole | Miejski Zakład Komunikacyjny, Opole | | | |
| OPTARE | | GB: United Kingdom of Great Britain and Northern Ireland | T: Type of car, lorry | | Optare | | | |
| OPUC | | CDN: Canada | C: City traffic | | Oshawa Public Utilities Commission | | | |
| ORBIS | | USA: United States of America | O: Organisation | | Orbis Interntional | Orbis International is an international non-profit non-governmental organization (NGO) dedicated to saving sight worldwide.[ | | |
| ORC | | J: Japan | A: Aviation | | Oriental Air Bridge | | | |
| OREN | | RUS: Russia | C: City traffic | Orenburg | | | | |
| ORIO | | I: Italy | M: Industry (railway maintenance) | | Orione S.r.L., Tito | | | |
| ORL | | F: France | C: City traffic | Orleans | | | | |
| ORLEN | | PL: Poland | B: Bus | Płock | Orlen Transport Płock sp. z o.o. | | | |
| ORN | | USA: United States of America | R: Railway | | Oregon Railroad and Navigation Company | | | |
| ORNE | | USA: United States of America | B: Bus | | Orange, Newark, and Elizabeth | | | |
| ORSA | | S: Sweden | R: Railway | | Orsatåg AB | 1998 - 2003 | | |
| OSAG | | CH: Switzerland | I: Industry (user) | | Osterwalder St. Gallen AG | | http://www.osterwalder.ch/sg | |
| OSAKAB | | J: Japan | B: Bus | | Osaka Bus Co. | | http://www.osakabus.jp/ | |
| OSAM | | J: Japan | C: City traffic | | Osaka Monorail | | | |
| OSB | | D: Germany | R: Railway | | Ortenau-S-Bahn | | | |
| OSBS | | USA: United States of America | S: Street transport company | | Osborn & Son Trucking Co Inc. | | | |
| OSC | | J: Japan | C: City traffic | | Osaka Municipal Transportation Bureau | | | |
| OSCH | | D: Germany | B: Bus | Oschersleben | | | | |
| OSE | | GR: Greece | ??? | | | | | |
| OSEE | | D: Germany | B: Bus | | Ostseebus | | | |
| OSHT | | CDN: Canada | C: City traffic | | Oshava Transit | | | |
| OSIN | | SU: Sovietunion | C: City traffic | Osinniki | | | | |
| OSJS | ØSJS | DK: Denmark | R: Railway | | Østsjællandske Jernbane Selskab (Østbanen) | 1879 - 2001 | | |
| OSL | | USA: United States of America | R: Railway | | Oregon Short Line | | | |
| OSLO | | N: Norway | C: City traffic | Oslo | | | | |
| OSN | | D: Germany | C: City traffic | | Stadtwerke Osnabrück | | | |
| OSR | | F: France | R: Railway | | OSR | Belongs to SNCB | | |
| OSTR | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Ostrołęce | | | |
| OSWI | | PL: Poland | B: Bus | | MZK Oswiecim | | | |
| OSY | | GR: Greece | B: Bus | Athen | Odikes Sygkinonies | | | |
| OTCT | | RO: Romania | R: Railway | | Oil Terminal Constanta | | | |
| OTEX | | BG: Bulgaria | R: Railway | | Optima Express | | | |
| OTOKAR | | TR: Turkey | T: Type of car, lorry | | Otokar Otomotiv ve Savunma Sanayi A.Ş., | | https://en.wikipedia.org/wiki/Otokar | |
| OTS | | J: Japan | C: City traffic | | Osaka Port Transport System | | | |
| OTZ | | A: Austria | B: Bus | | Ötztaler Verkehrsgesellschaft mbH | | | |
| OUEST | | F: France | R: Railway | | Chemins de fer de l'Ouest | | https://en.wikipedia.org/wiki/Chemins_de_fer_de_l%27Ouest | |
| OUIES | | E: Spain | RO: Railway operator | | Ouigo España | | ouigo.com/es | |
| OVA | | E: Spain | A: Aviation | | Air Europa Express | | https://en.wikipedia.org/wiki/Air_Europa_Express | |
| OVAG | | D: Germany | B: Bus | Gummersbach | Oberbergische Verkehrs-AG Gummersbach | | | |
| OVB | | D: Germany | B: Bus | Offenbach am Main | Offenbacher Verkehrs-Betriebe GmbH | | | |
| OVERGR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Walter Dengerfield Bus Company | Fleetname: Overground | | |
| OVF | | D: Germany | B: Bus | | Omnibusverkehr Franken GmbH | | https://de.wikipedia.org/wiki/Omnibusverkehr_Franken | |
| OVPS | | D: Germany | C: City traffic | Pirna | Oberelbische Verkehrsgesellschaft Pirna-Sebnitz | | | |
| OW | | USA: United States of America | R: Railway | | New York, Ontario & Western | | | |
| OWB | | D: Germany | N: Narrow gauge railway | | Oberweißbacher Bergbahn | | | |
| OWEN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Owen's Coaches | | | |
| OWI | | USA: United States of America | R: Railway | | Oneida & Western Railroad | | | |
| OWLX | | USA: United States of America | B: Bus | | OWL Express | A Coach USA company | | |
| OWRN | | USA: United States of America | R: Railway | | Oregon-Washington Railroad and Navigation Company | | | |
| OWTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Oneida & Western Transportation | | | |
| OXBC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Oxford | Oxford Bus Company | The City of Oxford Motor Services Ltd. It is a subsidiary of the Go-Ahead Group. | | |
| OZEKI | | J: Japan | B: Bus | | Ozeki Kanko Bus Co. | | | |
| P88T | | US-PA: USA, Pennsylvania | B: Bus | Pittsburgh | 88 Transit | | | |
| PA | | USA: United States of America | A: Aviation | | Pan American | | | |
| PABCO | | USA: United States of America | B: Bus | | PABCO Transit Inc. | | | |
| PABI | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacyjny Pabianice sp. z o.o. | | | |
| PAC | PAC, PO | USA: United States of America | A: Aviation | | Polar Air Cargo | | | |
| PACE | | USA: United States of America | B: Bus | | PACE (Chicago, Ill.) | | | |
| PACSA | | CDN: Canada | A: Aviation | | Pacific Sky Aviation | | http://www.pacificsky.ca/ | |
| PADA | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Padarn Railway | | | |
| PAE | | USA: United States of America | R: Railway | | Peoria & Eastern Ry. | | | |
| PAJU | | LT: Lithuania | C: City traffic | Klaipeda | UAB Pajurio Autobusai | | | |
| PAKL | | PL: Poland | B: Bus | | Przewozy Autokarowe Kazimierz Lisinski | | | |
| PAL | | USA: United States of America | R: Railway | | Paducah & Louisville | | | |
| PALH | H-PAEV | H: Hungary | N: Narrow gauge railway | | Pálháza | | | |
| PALP | PAL | RP: Philippines | A: Aviation | | Philippine Airlines | | | |
| PAN | | H: Hungary | B: Bus | | Pannon Volán | | | |
| PANA | | J: Japan | F: Industry (manufacturer) | | Panasonic | | | |
| PANGAS | | CH: Switzerland | I: Industry (user) | | PanGas AG | | | |
| PANLOG | | CH: Switzerland | R: Railway | | Panlog AG | | | |
| PANYNJ | | USA: United States of America | C: City traffic | | Port Authority of New York & New Jersey | | | |
| PAR | | F: France | C: City traffic | Paris | | | | |
| PARD | | CZ: Czech Republic | C: City traffic | | Pardubice | | | |
| PARLA | | E: Spain | C: City traffic | Parla | Tranvia de Parla | | | |
| PARX | | USA: United States of America | R: Railway | | Pan American Railway Copany | | | |
| PASOLINI | | I: Italy | M: Industry (railway maintenance) | | Pasolini VCB | | | |
| PASSAT | | US-NJ: USA, New Jersey | B: Bus | | Passic-Athenia Bus Company | | | |
| PASSV | | US-NJ: USA, New Jersey | B: Bus | | Passaic Valley | | | |
| PAT | | USA: United States of America | C: City traffic | Pittsburgh | Port Authority Transit (Pittsburgh - Allegheny county) | | Port Authority of Allegheny County | |
| PATCO | | USA: United States of America | C: City traffic | Pittsburgh | Port Authority Transit Corporation | | | |
| PATH | | USA: United States of America | C: City traffic | | Port Authority Trans-Hudson | | | |
| PAVELEC | | PL: Poland | B: Bus | | Usługi Transportowe Krzysztof Pawelec | | | |
| PAWO | | PL: Poland | V: Museum | | Parowozownia Wolsztyn | | | |
| PAWT | | USA: United States of America | B: Bus | | Pawtuxet Valley Bus Lines | | https://cptdb.ca/wiki/index.php/Pawtuxet_Valley_Bus_Lines | |
| PAZ | | RUS: Russia | T: Type of car, lorry | | Pavlovsky Avtobusny Zavod | | https://en.wikipedia.org/wiki/Pavlovo_Bus_Factory | |
| PB | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Porterbrook | Porterbrook is one of the three major ROSCOs (ROlling Stock COmpany) in the United Kingdom. Created in 1994 as part of the privatisation of British Rail, it owns around a third of passenger railway locomotives, multiple units and coaching stock running on Network Rail's system which it leases to various train operators. In 1996 it was sold as in a management-employee buyout and subsequently owned by Stagecoach Group until 2000 when it was taken over by the Abbey National bank. | http://www.porterbrook.com/ | |
| PBB | | D: Germany | B: Bus | Merseburg | | | | |
| PBCC | | USA: United States of America | I: Industry (user) | | Peabody Coal Company (old) | | | |
| PBIL | | USA: United States of America | T: Type of car, lorry | | Peterbilt | | | |
| PBLX | | USA: United States of America | I: Industry (user) | | The Pilsbury Co. | | | |
| PBR | | CH: Switzerland | R: Railway | | Joux Le Pont-Le Brassus | | | |
| PBS | | DK: Denmark | R: Railway | | Privat Banen Sønderjylland | 1997 - 2001 | | |
| PBSV | | D: Germany | R: Railway | | PBSV Verkehrs-GmbH Magdeburg | | www.pbsv-gmbh.de/ | |
| PBUS | | ??? | Z: Scale | | | | | |
| PBYT | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Bytowie | | | |
| PC | | USA: United States of America | R: Railway | | Penn Central | | | |
| PCC | | USA: United States of America | R: Railway | | Pittsburgh, Cincinnati, Chicago & St Louis Railroad | | | |
| PCCA | PCC | PL: Poland | R: Railway | | | | | |
| PCCR | PRS | PL: Poland | R: Railway | | PCC Rail Szczakowa S.A. | | www.pcc.railszczakowa.com.pl/ | |
| PCCSTL | | USA: United States of America | R: Railway | | Pittsburgh, Cincinnati, Chicago & St. Louis Railroad | | | |
| PCCX | | USA: United States of America | I: Industry (user) | | Peabody Coal Co. | | | |
| PCE | | CH: Switzerland | ??? | | Prestige Continental Express | | | |
| PCHOJ | | PL: Poland | B: Bus | | PKS Chojnice Sp. z o.o. | | | |
| PCHR | | USA: United States of America | R: Railway | | Port Colborne Harbour Railway | | | |
| PCIE | | PL: Poland | B: Bus | | PKS Cieszyn | | | |
| PCRC | | PA: Panama | R: Railway | | Panama Canal Railway Company | | http://www.panarail.com/en | |
| PCT | | A: Austria | R: Railway | | Private Car Train - ARS-Altmann | | | |
| PCWP | | US-NY: USA, New York | B: Bus | | Port Chester & White Plains Bus Co | | | |
| PDRR | | USA: United States of America | R: Railway | | Pee Dee River R.R. Co. | | | |
| PE | | USA: United States of America | C: City traffic | Los Angeles | Pacific Electric Railway | | | |
| PEC | | D: Germany | N: Narrow gauge railway | | Parkeisenbahn Cottbus | | | |
| PECH | | D: Germany | N: Narrow gauge railway | | Parkeisenbahn Chemnitz | | | |
| PEERLESS | | US-CA: USA, California | B: Bus | | Peerless Stages | | | |
| PEG | | D: Germany | R: Railway | | Prignitzer Eisenbahn GmbH | | www.prignitzer-eisenbahn.de/ | |
| PELW | | USA: United States of America | F: Industry (manufacturer) | | Peoria Locomotive Works | | | |
| PEN | | USA: United States of America | R: Railway | | Pennsylvania | | | |
| PENNJ | | US-NJ: USA, New Jersey | B: Bus | | Penn-Jersey Coachways | | | |
| PERKIOMEN | | USA: United States of America | TB: Tourist agency | | Perkiomen Tours & Travel | | https://www.perkiomentours.com | |
| PET | | N: Norway | I: Industry (user) | | Peterson AS | | | |
| PETBT | | CDN: Canada | B: Bus | | Peterborough Transit | | | |
| PETRO | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | | Petrochem | | | |
| PETROEC | | EC: Ecuador | I: Industry (user) | | Empresa Estatal Petróleos del Ecuador | | | |
| PEUGEOT | | ??? | T: Type of car, lorry | | Peugeot | | | |
| PFB | | D: Germany | R: Railway | | Pfalzbahn | | http://www.pfalzbahn.de/ | |
| PFE | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Pacific Fruit Express Co. | | | |
| PFIELD | | USA: United States of America | B: Bus | | Plainfield Transit Flxible | | | |
| PFLI | | D: Germany | B: Bus | | Pflieger Reise- und Verkehrs-GmbH + Co | | | |
| PFT | | B: Belgium | O: Organisation | | Patrimoine Ferroviaire et Tourisme | | http://www.pfttsp.be | |
| PFWC | | USA: United States of America | R: Railway | | Pittsburgh, Fort Wayne & Chicago Railroad | | | |
| PGDA | | PL: Poland | B: Bus | | PKS Gdańsk | | | |
| PGE | | CDN: Canada | R: Railway | | Pacific Great Eastern Railway | | | |
| PGER | | CDN: Canada | R: Railway | | Pacific Great Eastern Railway | | | |
| PGEX | | USA: United States of America | I: Industry (user) | | Portland General Electric Co. | | | |
| PGKBROD | | PL: Poland | C: City traffic | Brodnica | Przedsiêbiorstwo Gospodarki Komunalnej sp. z o.o. | | | |
| PGKSUW | | PL: Poland | B: Bus | | Przedsiêbiorstwo Gospodarki Komunalnej w Suwalkach sp. z o.o | | | |
| PGLIW | | PL: Poland | B: Bus | | PKS Gliwice | | | |
| PGLOG | | PL: Poland | B: Bus | | "Intertrans" PKS Glogów | | | |
| PGNIEZ | | PL: Poland | B: Bus | | PKS Gniezno | | | |
| PGR | | USA: United States of America | R: Railway | | Progressive Rail, Inc. | | | |
| PHD | | USA: United States of America | R: Railway | Grodzisk Mazowiecki | Port Huron and Detroit Railroad Company | | | |
| PHILB | | US-NJ: USA, New Jersey | B: Bus | | Philboro Coach Corporation | | | |
| PHILI | | F: France | B: Bus | | Philibert Transport Loire | | https://philibert-location.fr/ | |
| PHTS | | USA: United States of America | C: City traffic | Phoenix | Phoenix Transit System | | | |
| PIA | | PK: Pakistan | A: Aviation | | Pakistan International Airlines | | | |
| PICH | | F: France | M: Industry (railway maintenance) | | Pichenot Bouillé | | | |
| PICJ | | VDR: Viet-Nam, Democratic Republic of | A: Aviation | | Jetstar Pacific | | https://en.wikipedia.org/wiki/Pacific_Airlines#Jetstar_Pacific | |
| PICK | | USA: United States of America | R: Railway | | Pickens Railway | | | |
| PIESBERG | | D: Germany | I: Industry (user) | | Piesberger Steinindustrie | | | |
| PIL | | CH: Switzerland | N: Narrow gauge railway | | Pilatus Bahnen | | | |
| PILB | PR | AUS: Australia | R: Railway | | Pilbara Rail | | | |
| PIMK | | BG: Bulgaria | R: Railway | | PIMK Rail | | | |
| PINZ | | A: Austria | T: Type of car, lorry | | Pinzgauer | | | |
| PIOM | | I: Italy | I: Industry (user) | | Piombino Steel Works | | | |
| PIONEER | | US-NY: USA, New York | B: Bus | | Pioneer | | | |
| PIPER | | US-FL: USA, Florida | F: Industry (manufacturer) | | Piper Aircraft Inc. | | https://en.wikipedia.org/wiki/Piper_Aircraft | |
| PIRAN | | SLO: Slovenia | B: Bus | Piran | | | | |
| PITER | | RUS: Russia | B: Bus | | Piteravto LLC | | | |
| PITTSBURGH | | USA: United States of America | C: City traffic | Pittsburgh | | | | |
| PJAT | | RUS: Russia | C: City traffic | Piatigorsk | | | | |
| PKAE | PKA | PL: Poland | B: Bus | Elblag | Przedsiębiorstwo Komunikacji Busowej sp. z o. o | | | |
| PKAF | | PK: Pakistan | Y: Military | | Pakistan Air Force | | | |
| PKATGDY | | PL: Poland | C: City traffic | | Przedsiebiorstwo Komunikacji Autobusowej i Trolejbusowej w Gdyni | 1994 0 1998 | | |
| PKBIAB | | PL: Poland | B: Bus | | PKS Bialsko Biala | | | |
| PKBIAL | PKS | PL: Poland | B: Bus | | PKS Bialstok S.A. | | | |
| PKBROD | PKS | PL: Poland | B: Bus | | Przedsiêbiorstwo Komunikacji Samochodowej w Brodnicy S.A. | | | |
| PKBRZ | | PL: Poland | B: Bus | | PKS Brzeg | | | |
| PKBYD | | PL: Poland | B: Bus | | PKS Bydgoszcz | | | |
| PKDZIE | | PL: Poland | B: Bus | | PKS Dzierzoniów S.A. | | | |
| PKGOS | | PL: Poland | B: Bus | | PKS Gostynin | | | |
| PKGROJ | PKS | PL: Poland | B: Bus | Grójec | Przedsiêbiorstwo Komunikacji Samochodowej sp. z o.o. | | | |
| PKGRUD | PKS | PL: Poland | B: Bus | | PKS Grudzi¹dz Sp. z o.o. | | | |
| PKGRYF | | PL: Poland | B: Bus | | PKS Gryfice | | | |
| PKIEL | | PL: Poland | B: Bus | | PKS Kielce | | | |
| PKJEDR | | PL: Poland | B: Bus | | PKS Jedrzejow | | | |
| PKJEG | | PL: Poland | B: Bus | | PKS Jelenia Góra | | | |
| PKKAM | | PL: Poland | B: Bus | | PKS Kamienna Góra | | | |
| PKLEC | | PL: Poland | B: Bus | | PKS Łęczyca | | | |
| PKLEG | | PL: Poland | B: Bus | | Przedsiêbiorstwo Komunikacji Samochodowej Legnica | | | |
| PKLES | | PL: Poland | B: Bus | | PKS Leszno | | | |
| PKMO | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Miejskiej Sp. z o.o. | | | |
| PKOL | | PL: Poland | B: Bus | | PPKS Kolobrzeg | | | |
| PKOSZ | | PL: Poland | B: Bus | | PKS Koszalin | | | |
| PKOZ | | PL: Poland | B: Bus | | PKS Kozienice | | | |
| PKP | | PL: Poland | R: Railway | | | | | |
| PKPC | | PL: Poland | R: Railway | | PKP Cargo | | | |
| PKPOL | | PL: Poland | B: Bus | | PKS Polonus w Warszawie | | | |
| PKPOZN | PKS | PL: Poland | B: Bus | | Przedsiêbiorstwo Komunikacji Samochodowej w Poznaniu S.A. | | | |
| PKPPR | | PL: Poland | R: Railway | | Przewozy Regionalne | | | |
| PKPRZ | | PL: Poland | B: Bus | | PKS Przemyśl | | | |
| PKPSZ | | PL: Poland | B: Bus | | PKS w Pszczynie | | | |
| PKRAC | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunalne Racibórz | | | |
| PKRAD | | PL: Poland | B: Bus | | PKS Radom | | | |
| PKRAK | | PL: Poland | B: Bus | | PKS w Krakowie S.A. | | | |
| PKRAS | | PL: Poland | B: Bus | | Przedsiębiorstwo Państwowej Komunikacji Samochodowej w Kraśniku | | | |
| PKROS | | PL: Poland | B: Bus | | PKS Krosno | | | |
| PKRYB | | PL: Poland | B: Bus | | PKS Rybnik | | | |
| PKSAN | | PL: Poland | B: Bus | | PKS Sanok | | | |
| PKSBB | | PL: Poland | B: Bus | | PKS Bielsko Biala | | | |
| PKSBE | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Bełchatowie Sp. z o.o. | | www.pks.belchatow.pl | |
| PKSCZ | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej Częstochowa S.A. | | | |
| PKSE | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej Elblag | | | |
| PKSGM | | PL: Poland | B: Bus | | PKS Grodzisk Mazowiecki | | | |
| PKSGR | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej Sp. z o.o. w Grójcu | | | |
| PKSIE | | PL: Poland | B: Bus | | PKS Siematycze | | | |
| PKSIS | | PL: Poland | B: Bus | | PKSiS Oswiecim S.A. | | | |
| PKSJ | | PL: Poland | B: Bus | | PKS Jaslo | | | |
| PKSL | | PL: Poland | B: Bus | | PKS Lodz | | | |
| PKSLU | | PL: Poland | B: Bus | | PKS Lubliniec | | | |
| PKSLUP | PKS | PL: Poland | B: Bus | | Przedsiêbiorstwo Komunikacji Samochodowej w S³upsku S.A. | | | |
| PKSNS | | PL: Poland | B: Bus | | PKS Novy Sącz | | | |
| PKSOL | | PL: Poland | B: Bus | | PKS Olsztyn | | | |
| PKSOP | | PL: Poland | B: Bus | | PKS Sokołów Podlaski | | | |
| PKSOW | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Ostrowie Wielkopolskim | | | |
| PKSPI | | PL: Poland | B: Bus | Piaseczno | Przedsiębiorstwo Państwowej Komunikacji Samochodowej w Piasecznie | | | |
| PKSPRZ | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej Spółka z o.o. w Przemyślu | | | |
| PKSPU | | PL: Poland | B: Bus | | PKS Pulawy | | | |
| PKSSI | | PL: Poland | B: Bus | | PKS Siedlce | | | |
| PKSSW | | PL: Poland | A: Aviation | | PKS w Stalowej Woli S.A. | | | |
| PKSUW | | PL: Poland | B: Bus | | PKS Suwalki | | | |
| PKSWE | | PL: Poland | B: Bus | | PKS Wejherovo | | | |
| PKSWEJ | | PL: Poland | B: Bus | Wejherowo | Pomorska Komunikacja Samochodowa | | | |
| PKSWID | | PL: Poland | B: Bus | | PKS Swidnica | | | |
| PKTAR | | PL: Poland | B: Bus | | PKS Tarnöw | | | |
| PKTBZ | | PL: Poland | B: Bus | | PKS Tarnobrzeg | | http://www.pks.tarnobrzeg.pl/ | |
| PKTG | | PL: Poland | C: City traffic | | Przedsiêbiorstwo Komunikacji Trolejbusowej Gdynia | | | |
| PKTGDY | | PL: Poland | C: City traffic | | Przedsiębiorstwo Komunikacji Trolejbusowej Sp. z o.o. w Gdyni | | http://pktgdynia.pl/index.php/en/firm/ | |
| PKTOR | | PL: Poland | B: Bus | | PKS Torun | | | |
| PKWEJ | | PL: Poland | B: Bus | | PKS Wejheerowo | | | |
| PKZAM | | PL: Poland | B: Bus | | PKS Zamosc | | | |
| PL | | PL: Poland | B: Bus | | Other | | | |
| PLA | | PRC: China | Y: Military | | People's Liberation Army | | | |
| PLAAF | | PRC: China | Y: Military | | People's Liberation Army Air Force | | | |
| PLAU | | D: Germany | C: City traffic | Plauen | | | | |
| PLAXTON | | GB: United Kingdom of Great Britain and Northern Ireland | T: Type of car, lorry | | Plaxton | | | |
| PLCX | | USA: United States of America | I: Industry (user) | | General Electric Rail Services Corp. | | | |
| PLE | | USA: United States of America | R: Railway | | The Pittsburgh & Lake Erie R.R. Co. | | | |
| PLEVT | | BG: Bulgaria | C: City traffic | Pleven | Troleybus Transport Pleven | | | |
| PLM | | F: France | R: Railway | | Compagnie des chemins de fer de Paris à Lyon et la Méditerranée | | | |
| PLOCK | | PL: Poland | C: City traffic | | Komunikacja Miejska Płock | | | |
| PLOI | | RO: Romania | C: City traffic | | Regia Autonoma de Transport Ploiesti | | | |
| PLOK | | D: Germany | RO: Railway operator | | Pro-Lok GmbH | | | |
| PLU | PL | USA: United States of America | I: Industry (user) | | Pacific Lumber | | | |
| PLUN | | LT: Lithuania | B: Bus | | UAB PIungės AP | | | |
| PLY | | USA: United States of America | T: Type of car, lorry | | | | | |
| PM | | USA: United States of America | R: Railway | | Pere Marquette Railway | | https://en.wikipedia.org/wiki/Pere_Marquette_Railway | |
| PMC | | RP: Philippines | Y: Military | | Philippine Marine Corps | | | |
| PMCKY | PMCK&Y | USA: United States of America | R: Railway | | Pittsburgh, McKeesport & Youghiogheny | | | |
| PMDP | | CZ: Czech Republic | C: City traffic | Plzen | Plzenské Méstské Dopravni Podniky | | | |
| PMIM | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Mińsku Mazowieckim | | | |
| PMRAG | | PL: Poland | B: Bus | | PKS Mrągowo sp. z o.o. | | | |
| PMTA | | PK: Pakistan | C: City traffic | | Punjab Mass Transit Authority | | | |
| PMTLU | | PL: Poland | RO: Railway operator | | POL - MIEDŻ TRANS | | | |
| PMYSZ | | PL: Poland | B: Bus | | PKS Myszków | | | |
| PN | | AUS: Australia | R: Railway | | Pacific National | | | |
| PNC | PN | USA: United States of America | R: Railway | | Piedmont & Northern Railway | | http://en.wikipedia.org/wiki/Piedmont_and_Northern_Railway | |
| PNCX | | USA: United States of America | I: Industry (user) | | Precision National Corporation | | | |
| PNDM | | PL: Poland | B: Bus | | PPKS Nowy Dwór Mazowiecky | | | |
| PNJX | | USA: United States of America | I: Industry (user) | | General Electric Railcar Services | | | |
| PNQ | | AUS: Australia | R: Railway | | Pacific National Queensland | | | |
| PNSOL | | PL: Poland | B: Bus | | PKS Nowa Sól | | | |
| PNV | | D: Germany | C: City traffic | | PNV Personennahverkehrs GmbH Riesa-Großenhain | | | |
| PNWR | | USA: United States of America | R: Railway | | Portland & Western | | | |
| PNYSA | | PL: Poland | B: Bus | | PKS w Nysie Sp. z o.o. | | | |
| PO | | F: France | R: Railway | | Compagnie du chemin de fer Paris et Orléans | | | |
| POC | | ??? | ??? | | P&O Cruises | | | |
| POCMT | | USA: United States of America | B: Bus | | Pocono Mountain Trails | | | |
| POL | | X: Global | O: Organisation | | Police | | | |
| POLAF | | PL: Poland | Y: Military | | Polish Air Force | | | |
| POLAK | | PL: Poland | B: Bus | Chorzów | Usługi Przewozowe Henryk Polak | | | |
| POLBUS | | PL: Poland | B: Bus | | PKS Polbus | | www.polbus.pl | |
| POLK | | CZ: Czech Republic | B: Bus | | ČSAD POLKOST | | | |
| POLX | | PL: Poland | B: Bus | | Polski Express | | | |
| POM | | USA: United States of America | R: Railway | | Port of Miami Railroad | | | |
| PORTO | STCP | P: Portugal | C: City traffic | Porto | Sociedade de Transportes Colectivos do Porto, E.I.M. | | | |
| POST | | D: Germany | O: Organisation | | Deutsche Post | | | |
| POT | VIP | D: Germany | C: City traffic | Potsdam | ViP Verkehrsbetrieb Potsdam GmbH | | https://de.wikipedia.org/wiki/Verkehrsbetrieb_Potsdam | |
| POTB | | USA: United States of America | R: Railway | | Port of Tillamook Bay R.R. | | | |
| POTM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Stoke-on-Trent | Potteries Motor Traction | | | |
| POZ | MPK | PL: Poland | C: City traffic | Poznan | | | | |
| PP | | CZ: Czech Republic | RO: Railway operator | | Posázavský Pacifik doprava s.r.o. | | | |
| PPAN | | US-MA: USA, Massachusetts | B: Bus | | Peter Pan Bus Lines | | https://en.wikipedia.org/wiki/Peter_Pan_Bus_Lines | |
| PPGX | | USA: United States of America | I: Industry (user) | | Pittsburgh Plate Glass Co. | | | |
| PPKSBB | | PL: Poland | B: Bus | | PPKS Bialsko Biala | | | |
| PPKWAR | | PL: Poland | B: Bus | | PPKS w Warszawie | | | |
| PPLOCK | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Płocku | | | |
| PPLX | | USA: United States of America | I: Industry (user) | | Pennsylvania Power & Light Co. | | | |
| PPSZCZ | | PL: Poland | B: Bus | | PKS Pszczyna | | | |
| PPU | | USA: United States of America | R: Railway | | Peoria and Pekin Union | | | |
| PPX | | US-NY: USA, New York | B: Bus | | Pelham Parkway Express | | | |
| PR | KPEV | D: Germany | R: Railway | | Preussische (KPEV) | | | |
| PRAB | | S: Sweden | R: Railway | | Peterson Rail AB | 2007 - 2012 | | |
| PRAG | DPP | CZ: Czech Republic | C: City traffic | Praha | Dopravní podnik hl. m. Prahy | | www.dpp.cz | |
| PRAGA | | CZ: Czech Republic | T: Type of car, lorry | | | | | |
| PRC | | PK: Pakistan | R: Railway | | Pakistan Rail Company | | | |
| PREA | PR | USA: United States of America | R: Railway | | Philadelphia & Reading | | | |
| PREG | | PL: Poland | RO: Railway operator | | POLREGIO sp. z o.o. | | | |
| PREM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Premier Bus Company | | | |
| PRESS | | D: Germany | R: Railway | | Eisenbahnbau- und Betriebsgesellschaft Preßnitztalbahn mbH | | www.pressnitztalbahn.com/ | |
| PREX | | USA: United States of America | R: Railway | | Peoria & Western Railway | | | |
| PRG | | D: Germany | B: Bus | | Personen- und Reiseverkehrs GmbH Greiz | | https://www.bus-greiz.de/unternehmen/ueber-uns/ | |
| PRINCE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Prince Omnibus | | | |
| PRINCEM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Prince Marshal | | | |
| PRKII | | PL: Poland | M: Industry (railway maintenance) | | Przedsiębiorstwa Robót Kolejowych i Inżynieryjnych | | | |
| PRL | | USA: United States of America | R: Railway | | Penn Eastern Rail Lines, Inc. | | | |
| PRLW | | USA: United States of America | R: Railway | | Pennsylvania Railroad Lines West | | | |
| PROBO | | CZ: Czech Republic | B: Bus | | PROBO TRANS BEROUN | | https://cs.wikipedia.org/wiki/PROBO_BUS | |
| PROT | | PL: Poland | RO: Railway operator | | Protor sp. z o.o. sp. k. | | protorsa.com.pl | |
| PROV | CP | F: France | R: Railway | | Chemins de fer de Provence | | www.trainprovence.com/ | |
| PROX | | USA: United States of America | I: Industry (user) | | Procor Ltd. | | | |
| PRR | | USA: United States of America | R: Railway | | Pennsylvania Railroad | | | |
| PRSL | | USA: United States of America | R: Railway | | Pennsylvania-Reading Seashore Lines | | | |
| PRSX | | USA: United States of America | R: Railway | | Progress Rail Services Corp. | | | |
| PRT | | US-PA: USA, Pennsylvania | C: City traffic | | Philadelphia Rapid Transit | | | |
| PRZE | | PL: Poland | B: Bus | | PKS w Rzeszowie S.A. | | | |
| PRZEMYSL | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji Sp. z o.o. w Przemyślu | | https://www.mzk.przemysl.pl/ | |
| PS | | H: Hungary | C: City traffic | Pécs | Pécsi Közlekedési RT | | | |
| PSCT | | US-NJ: USA, New Jersey | B: Bus | | Public Service Coordinated Transportation Company | | https://en.wikipedia.org/wiki/NJ_Transit_Bus_Operations | |
| PSKOVPA | | RUS: Russia | B: Bus | | GPPO PskovPassazhirAvtotrans | | | |
| PSL | | USA: United States of America | R: Railway | | Peabody Short Line R.R. | | | |
| PSP | | PL: Poland | YA: Military: Air force | | Polskie Siły Powietrzne | The Polish Air Forces (Polskie Siły Powietrzne) was the name of the Polish Air Forces formed in France and the United Kingdom during World War II. | https://en.wikipedia.org/wiki/Polish_Air_Forces_in_France_and_Great_Britain | |
| PSPOZ | | PL: Poland | O: Organisation | | Państwowa Straż Pożarna | | | |
| PSR | PS | USA: United States of America | R: Railway | | The Pittsburgh & Shawmut R.R. Co. | | | |
| PST | | USA: United States of America | C: City traffic | | Philadelphia Suburban Transportation Company | | | |
| PSTC | | USA: United States of America | C: City traffic | | Philadelphia Suburban Transportation Company | | | |
| PSZ | | SK: Slovakia | RO: Railway operator | | Prvá Slovenska zeleznicná | | | |
| PTC | | USA: United States of America | B: Bus | | Philadelphia Transportation Co. | | | |
| PTEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | North American Car Corp. | | | |
| PTG | | E: Spain | RO: Railway operator | | Alsa PTG Tours | | | |
| PTI | | CH: Switzerland | A: Aviation | | PrivatAir | | | |
| PTLRTJ | | RI: Indonesia | C: City traffic | | PT LRT Jakarta | | | |
| PTLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Pullman Transport Leasing Co. | | | |
| PTM | | USA: United States of America | R: Railway | | Portland Terminal Co. | | | |
| PTRY | | PL: Poland | C: City traffic | Piotrków Trybunalski | Miejski Zakład Komunikacyjny sp. z o.o. in Piotrków Trybunalski | | | |
| PTS | | PL: Poland | P: Pool (Leasing / wagon pool) | | Polski Tabor Szynowy Sp. z o.o. | Polski Tabor Szynowy (former FPW Invest) was established in July 2011 as a part of the Industrial Development Agency Capital Group. | https://polskitabor.pl/ | |
| PTSK | | PL: Poland | B: Bus | | Przedsiębiorstwo Transportu Samochodowego S.A., Kraków | | | |
| PTT | | CH: Switzerland | ??? | | Post | | | |
| PUKOM | | PL: Poland | C: City traffic | Komorniki | Przedsiębiorstwo Usług Komunalnych Komorniki | | | |
| PULAWY | | PL: Poland | B: Bus | Puławy | Miejski Zakład Komunikacji w Puławach | | | |
| PULHAM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Pulham & Sons (Coaches) Ltd. | | | |
| PULL | PLM | USA: United States of America | R: Railway | | Pullman R.R. Co. | | | |
| PUP | | PL: Poland | B: Bus | Czeladź | PUP Jerzy Sebzda / Sed-Baz / MJP-BAZ sp. z o.o. | | | |
| PV | | LV: Latvia | R: Railway | | A/S Pasazieru Vilciens | Since 2008 PV operates all domestic passenger trains in Latvia independent from LDz. Since 2003 PV was a subsidiary of LDz. The EMU/DMU depot is run by "VRC Zasulauks". PV plans to buy 32 new dual-voltage EMUs, to be delivered between 2019 and 2021. All passenger-operated railway lines will be electrified by 2025. | http://www.pv.lv/ | |
| PVGX | | USA: United States of America | R: Railway | | Peavey Co. | | | |
| PVM | | D: Germany | C: City traffic | | | | | |
| PVTA | | USA: United States of America | C: City traffic | | Pioneer Valley Transit Authority | | | |
| PVVV | | H: Hungary | C: City traffic | Pozsony | | | | |
| PW | | USA: United States of America | R: Railway | | Providence & Worcester Railroad Company | | | |
| PWALB | | PL: Poland | B: Bus | | PKS Wałbrzych | | | |
| PWALCZ | | PL: Poland | B: Bus | | PKS Sp. z o.o. Wałcz | | | |
| PWHD | | PL: Poland | B: Bus | | Przedsiêbiorstwo Wielobranzowe Henryk Dyrda | | | |
| PWRY | | USA: United States of America | R: Railway | | Peoria & Western | | | |
| PWV | | USA: United States of America | R: Railway | | Pittsburgh & West Virginia Ry. | | | |
| PYA | | USA: United States of America | R: Railway | | Pittsburgh, Youngstown & Ashtabula Railroad | | | |
| PZARY | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Samochodowej w Żarach | | https://pl.wikipedia.org/wiki/Przedsi%C4%99biorstwo_Komunikacji_Samochodowej_w_%C5%BBarach | |
| PZIEG | PKS | PL: Poland | B: Bus | | PKS Zielona Góra | | | |
| PZIW | | PL: Poland | B: Bus | | PKS Żywiec | | | |
| PZS | | SK: Slovakia | RO: Railway operator | | Podvihorlatský Zeleznièny spolok | | | |
| Q | | ??? | Z: Scale | | Inch | | | |
| QBUS | | D: Germany | B: Bus | Ballenstedt | Q-Bus Nahverkehrsgesellschaft mbH | | | |
| QBUZ | | NL: Netherlands | C: City traffic | | Qbuzz | | | |
| QBZ | | NL: Netherlands | RO: Railway operator | | Qbuzz | | https://en.wikipedia.org/wiki/Qbuzz | |
| QC | | CDN: Canada | R: Railway | | Quebec Central Railway Company | | | |
| QCM | | CDN: Canada | I: Industry (user) | | Quebec Cartier Mining Railway | | | |
| QCR | | CDN: Canada | R: Railway | | Quebec Central Rail | | | |
| QFA | | AUS: Australia | A: Aviation | | Qantas | | | |
| QG | CTV | RI: Indonesia | A: Aviation | | PT Citilink Indonesia | | https://en.wikipedia.org/wiki/Citilink | |
| QGRY | | CDN: Canada | R: Railway | | Quebec Gatineau Ry., Inc. | | | |
| QIT | | CDN: Canada | I: Industry (user) | | Quebec Iron & Titanium | | | |
| QNSL | | CDN: Canada | R: Railway | | Québec North Shore and Labrador Railway | | | |
| QNZ | QNZ, QF | NZ: New Zealand | A: Aviation | | Jetconnect | | | |
| QR | | AUS: Australia | R: Railway | | Queensland Rail | | | |
| QRN | | AUS: Australia | R: Railway | | QR National | Formerly Queensland Rail and Interail | | |
| QSC | | US-NY: USA, New York | B: Bus | New York | Queens Surface Corp. | | | |
| QSR | | CDN: Canada | R: Railway | | Quebec Southern Railway | | | |
| QT | | US-NY: USA, New York | B: Bus | New York | Queens Transit | | | |
| QTI | | CDN: Canada | R: Railway | | Quaboag Transfer | | | |
| QTR | | Q: Qatar | A: Aviation | | Qatar Airways | | | |
| QUASE | | I: Italy | L: Logistics company | | Quadrante Servizi S.r.l. | | | |
| QUECKE | | D: Germany | B: Bus | Dortmund | Quecke-Reisen | | | |
| QUENT | | US-NY: USA, New York | B: Bus | New York | Queens-Nassau Transit Lines | | | |
| R4C | | D: Germany | R: Railway | | Rail4Chem (BASF AG, Bertschi AG, HOYER GmbH, VTG-LEHNKERING AG) | | www.rail4chem.com/ | |
| R4U | | D: Germany | R: Railway | | Rail4You | | | |
| RA | | SU: Sovietunion | Y: Military | | Red Army - Sovietunion | | | |
| RAAF | | AUS: Australia | YA: Military: Air force | | Royal Australian Air Force | | https://en.wikipedia.org/wiki/Royal_Australian_Air_Force | |
| RAB | | D: Germany | R: Railway | | DB ZugBus Regionalverkehr Alb-Bodensee | | | |
| RAC | | J: Japan | A: Aviation | | Ryukyu Air Commuter | | | |
| RACA | | S: Sweden | ??? | | Railcare | | | |
| RADOM | | PL: Poland | C: City traffic | | MPK Radom | | | |
| RADVE | | D: Germany | R: Railway | | RailAdventure GmbH | | http://www.railadventure.de | |
| RAF | | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | Royal Air Force | | | |
| RAFAF | | AFG: Afghanistan | YA: Military: Air force | | Royal Afghan Air Force | | | |
| RAG | | D: Germany | R: Railway | | Bahn- und Hafenbetriebe der Ruhrkohle AG GmbH | | www.rag-bahnhafen.de/ | |
| RAI | | EU: European Union | ??? | | Railion | | | |
| RAILIN | | CH: Switzerland | VC: Railway Friends Association | | Rail in club Interlaken | | | |
| RAILL | | SK: Slovakia | P: Pool (Leasing / wagon pool) | | Rolling Stock Lease s.r.o. | | sslovensko.sk | |
| RAILP | | PL: Poland | F: Industry (manufacturer) | | Rail Polska Sp | | | |
| RAILPRO | | NL: Netherlands | M: Industry (railway maintenance) | | voestalpine Railpro BV | | http://www.voestalpine.com/railpro | |
| RAILS | | CH: Switzerland | ??? | | Railship | | | |
| RAIP | | NL: Netherlands | R: Railway | | Railpromo | | | |
| RALP | | CH: Switzerland | R: Railway | | RegionAlps | | | |
| RALPIN | | CH: Switzerland | RO: Railway operator | | RAlpin AG | | | |
| RAMA | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | London Cityrama | | | |
| RANR | | NL: Netherlands | C: City traffic | | RandstadRail | | | |
| RAPID | | PL: Poland | B: Bus | Warszawa | Rapid-Bus s.c. | | | |
| RAR | | D: Germany | P: Pool (Leasing / wagon pool) | | Rent a Rail Eisenbahn-Service AG | | | |
| RARV | | US-NJ: USA, New Jersey | B: Bus | | Raritan Valley Bus Service | | | |
| RAT | | RO: Romania | C: City traffic | Craiova | | | | |
| RATB | | RO: Romania | C: City traffic | Bucharest | Regia Autonomă de Transport București | | https://en.wikipedia.org/wiki/Societatea_de_Transport_Bucure%C8%99ti | |
| RATC | | ??? | Y: Military | | Royal Army Transport Corps | | | |
| RATT | | RO: Romania | C: City traffic | Timisoara | Regia Autonomă de Transport Timişoara | | | |
| RATUC | | RO: Romania | C: City traffic | Cluj | Regia Autonomă de Transport Urban de Călători | - 2013 | | |
| RAWP | | D: Germany | M: Industry (railway maintenance) | | Rechsbahn Ausbesserungswerke Potsdam | | | |
| RAYN | | USA: United States of America | I: Industry (user) | | Rayonier Inc. | | | |
| RB | | CH: Switzerland | R: Railway | | Rigibahnen | | | |
| RBA | | D: Germany | B: Bus | | Regionalbus Augsburg GmbH | | https://de.wikipedia.org/wiki/Regionalbus_Augsburg | |
| RBAHN | | A: Austria | RO: Railway operator | | Regiobahn ErlebnisZug GmbH | | | |
| RBB | | D: Germany | R: Railway | | Regiobahn Bitterfeld-Berlin GmbH | | www.regiobahnbitterfeld.de/ | |
| RBBR | RBB | D: Germany | B: Bus | | Regionalbus Braunschweig GmbH | | https://de.wikipedia.org/wiki/Regionalbus_Braunschweig | |
| RBBX | | USA: United States of America | O: Organisation | | Ringling Bros. Barnum & Bailey | Circus trains | | |
| RBG | | D: Germany | R: Railway | | Regental Bahnbetriebs-GmbH | | www.laenderbahn.com/ | |
| RBH | | D: Germany | R: Railway | | Ruhrkohle Bahn - Hafen | Successor of the RAG (Ruhrkohle AG) | | |
| RBK | | D: Germany | C: City traffic | | Reginalbahn Kassel | | | |
| RBLUE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Royal Blue Coach Services | | https://en.wikipedia.org/wiki/Royal_Blue_Coach_Services | |
| RBM | | D: Germany | B: Bus | Merseburg | | | | |
| RBMN | | USA: United States of America | R: Railway | | Reading Blue Mountain & Northern Railroad Company | | | |
| RBO | | D: Germany | B: Bus | | Regionalbus Ostbayern GmbH | | | |
| RBOX | | USA: United States of America | ??? | | Railbox | | | |
| RBS | | CH: Switzerland | ??? | | Regionalverkehr Bern-Solothurn | | | |
| RBSH | | D: Germany | R: Railway | | Regionalbahn Schleswig-Holstein GmbH | | | |
| RBST | RBS | D: Germany | B: Bus | | Regionalbus Stuttgart | | | |
| RC | | AUS: Australia | R: Railway | | Regional Connect | | | |
| RCA | | A: Austria | R: Railway | | Rail Cargo Austria | | | |
| RCAF | | CDN: Canada | YA: Military: Air force | | Royal Canadian Air Force | | https://en.wikipedia.org/wiki/Royal_Canadian_Air_Force | |
| RCB | | D: Germany | R: Railway | | Rail Cargo Berlin GmbH | | | |
| RCBV | | RO: Romania | RO: Railway operator | | Regio Calatori Srl | | | |
| RCFM | | RMM: Mali | R: Railway | | Régie des Chemin de fer du Mali | | | |
| RCH | | H: Hungary | R: Railway | | Rail Cargo Hungaria | | | |
| RCI | | I: Italy | RO: Railway operator | | Rail Cargo Italia | | | |
| RCN | | D: Germany | R: Railway | | Rail Center Nürnberg GmbH & Co. KG | | | |
| RCOR | RC | AUS: Australia | R: Railway | | Rail Corporation New South Wales | | | |
| RCR | | RO: Romania | R: Railway | | Rail Cargo Romania | | | |
| RCRX | | USA: United States of America | I: Industry (user) | | Reagent Chemical & Research, Inc. | | | |
| RCT | | S: Sweden | R: Railway | | Railcare Tåg AB | 2008 | | |
| RCYAF | | CL: Sri Lanka | Y: Military | | Royal Ceylon Air Force | | | |
| RDA | | DK: Denmark | Y: Military | | Royal Danish Army | | | |
| RDAF | | DK: Denmark | Y: Military | | Royal Dutch Air Force | | https://en.wikipedia.org/wiki/Royal_Danish_Air_Force | |
| RDC | | D: Germany | R: Railway | | RDC Autozug Sylt | | | |
| RDF | | FAN: Fantasy | R: Railway | | RDF | | | |
| RDG | | USA: United States of America | R: Railway | | Reading Company | | | |
| RDGR | RDG | D: Germany | B: Bus | Gründau | Regionalverkehrsdienst Gründau | | | |
| RDTT | | CDN: Canada | B: Bus | | Red Deer Transit | | | |
| RDX | | D: Germany | RO: Railway operator | | Raildox GmbH & Co. KG | | https://de.wikipedia.org/wiki/Raildox | |
| REA | | USA: United States of America | R: Railway | | Reading RailRoad | | | |
| REAG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Red Eagle | | | |
| REALT | | US-NJ: USA, New Jersey | B: Bus | | Real Transit Inc. | | | |
| REAX | | S: Sweden | R: Railway | | Reaxcer AB | | | |
| RECSK | | H: Hungary | I: Industry (user) | | Recski Bányaüzem | | | |
| REDAP | | USA: United States of America | B: Bus | | Red Apple Transit | | | |
| REDG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Red Route Buses, Gravesend | | | |
| REDL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Red Line (Brickwood) | | | |
| REDLINE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Redline Buses | | http://redlinebuses.com/ | |
| REDR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Red Rose of Aylesbury | | | |
| REDROSE | | USA: United States of America | C: City traffic | | Red Rose Transit Authority | | | |
| REDROV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Red Rover | | http://redroverbuses.wordpress.com/red-rover-history/ | |
| REDTAN | | USA: United States of America | B: Bus | | Red & Tan | | | |
| REG | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Regional Railways | Regional Railways was one of the three passenger sectors of British Rail created in the 1980s that existed until privatisation in the 1990s. The sector was originally called Provincial, and ran regional non-express services. | | |
| REGAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Regal Busways | | | |
| REGBH | regiobus | D: Germany | B: Bus | | regiobus Hannover GmbH | | https://de.wikipedia.org/wiki/Regiobus_Hannover | |
| REGH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Hertford | Reg | | | |
| REGR | | F: France | R: Railway | | RegioRail | | | |
| REM | | D: Germany | C: City traffic | Remscheid | | | | |
| REMX | | USA: United States of America | ??? | | R.E.M.X. Corp. | | | |
| RENAULT | | F: France | T: Type of car, lorry | | Renault | | | |
| RENN | RBG | D: Germany | R: Railway | | Rennsteigbahn | | | |
| RENOWN | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Renown Bus Company | | | |
| REOL | | ??? | C: City traffic | | Reolian Public Transport Co. | The company was a joint venture between Veolia Transport RATP Asia (VTRA) and a company in Macau, the HN Group.[1] It was declared bankrupt by the Macau judiciary on December 4, 2013. | | |
| REPT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Reptons Coaches | | | |
| RER | | F: France | C: City traffic | Paris | | | | |
| RESI | | RO: Romania | C: City traffic | Resita | Prescom Resita | | | |
| RESZ | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Reserve Mining Co. | | | |
| RET | | NL: Netherlands | B: Bus | | | | | |
| REX | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | Rail Express Systems | | | |
| REXA | REX | USA: United States of America | ??? | | Railway Express Agency, Inc. | | | |
| REXER | | D: Germany | B: Bus | Calw | Albert Rexer GmbH & Co. KG | | https://de.wikipedia.org/wiki/Rexer_(Omnibusunternehmen) | |
| RF | | E: Spain | ??? | | RENFE | | | |
| RFB | | DK: Denmark | R: Railway | | Ringe - Fåborg Banen (Fåborgbanen) | 1882 - 1962 | | |
| RFD | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | Railfreight Distribution | | | |
| RFFSA | | BR: Brazil | R: Railway | | Rede Ferrovária Federal SA | | | |
| RFI | | I: Italy | M: Industry (railway maintenance) | | Rete Ferroviaria Italiana | The owner of the FS railway network. | | |
| RFLE | | D: Germany | R: Railway | | Railflex | | www.railflex.de | |
| RFOFS | | NL: Netherlands | RO: Railway operator | | Rail Force One Fleet Services | | | |
| RFP | | USA: United States of America | R: Railway | | Richmond, Fredricksburg & Potomac Railroad | | | |
| RGGJ | | DK: Denmark | R: Railway | | Ryomgård - Gjerrild - Grenå Jernbane (Gjerrildbanen) | 1911 - 1956 | | |
| RGRTA | | USA: United States of America | C: City traffic | | Rochester-Genesee Regional Transportation Authority | | https://en.wikipedia.org/wiki/Rochester-Genesee_Regional_Transportation_Authority | |
| RGS | | USA: United States of America | N: Narrow gauge railway | | Rio Grande Southern | | | |
| RGTR | | RO: Romania | R: Railway | | Regiotrans Brasov | | | |
| RHB | | CH: Switzerland | R: Railway | | Rhätische Bahn | | | |
| RHBA | | D: Germany | C: City traffic | | Rhein-Haardt-Bahn | | | |
| RHBRN | | D: Germany | I: Industry (user) | | Rheinbraun - Rheinische Braunkohlenwerke | | | |
| RHCA | RHC | D: Germany | R: Railway | | RheinCargo | | | |
| RHEB | RHB | CH: Switzerland | R: Railway | | Rorschach Heiden Bergbahn | | | |
| RHEF | | D: Germany | B: Bus | | RhönEnergie Fulda | | | |
| RHEI | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Vale of Rheidol Railway | The Vale of Rheidol Railway is a 12 mile long 1ft 11.5in gauge line in Mid-Wales, running from Aberystwyth on the coast to Devil's Bridge. It was conceived as both a mineral carrier and to catch the local day-trip trade, although for nearly all its life it has existed only as a tourist railway. It opened in 1902 as an independent company but with strong interest from the Cambrian Railways, it became part of the Great Western Railway in 1923, and then British Railways. It holds the distinctions of being the last part of BR to use steam, and was the first part to be privatised. | | |
| RHEING | | D: Germany | B: Bus | | Rheingold-Reisen-Wuppertal Blankennagel GmbH & Co. KG | | https://rheingoldbus.de/ | |
| RHJ | | DK: Denmark | R: Railway | | Randers - Hadsund Jernbane | 1883 - 1969 | | |
| RHR | | ZW: Zimbabwe | R: Railway | | Rhodesia Railways | | | |
| RHV | | CH: Switzerland | B: Bus | | Rheintalische Verkehrsbetriebe AG | | | |
| RI | | USA: United States of America | R: Railway | | Chicago, Rock Island & Pacific Railway | | | |
| RIA | RAI | IR: Iran | R: Railway | | Islamic Republic of Iran Railways | | http://en.wikipedia.org/wiki/Islamic_Republic_of_Iran_Railways | |
| RIAF | | IND: India | Y: Military | | Royal Indian Air Force | | https://en.wikipedia.org/wiki/Indian_Air_Force | |
| RIBBLE | | GB: United Kingdom of Great Britain and Northern Ireland | I: Industry (user) | Ribblesdale | Hanson Cement Ltd. | | | |
| RIDV | | LT: Lithuania | B: Bus | | UAB Ridvija | | | |
| RIGA | | LV: Latvia | C: City traffic | Riga | Rīgas Satiksme | | https://en.wikipedia.org/wiki/R%C4%ABgas_Satiksme | |
| RIOC | | USA: United States of America | B: Bus | | Roosevelt Island Operationg Corp. | | | |
| RIPTA | | USA: United States of America | C: City traffic | | Rhode Island Public Transit Authority | | https://en.wikipedia.org/wiki/Rhode_Island_Public_Transit_Authority | |
| RIS | | D: Germany | M: Industry (railway maintenance) | | Regio Infra Service | | | |
| RISS | | D: Germany | R: Railway | | | | | |
| RITB | | FAN: Fantasy | R: Railway | | Riggenthalerbahn | | | |
| RIVD | | US-NY: USA, New York | B: Bus | | Riverdale Transit | | | |
| RIVI | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Riviera Trains Ltd | Riviera Trains is a railway spot-hire company, based at Crewe in Cheshire. It owns a small fleet of Class 47 locomotives and coaching stock, were are hired to both passenger and charter train operators. | http://www.riviera-trains.co.uk/ | |
| RIY | RCRC | SA: Saudi-Arabia | C: City traffic | Riyadh | The Royal Commission for Riyadh City | | | |
| RJ | | D: Germany | N: Narrow gauge railway | | Bad Orber Bimmelbahn | | | |
| RJC | RJCR | USA: United States of America | R: Railway | | R.J. Corman Railroad Corp. | | | |
| RJCZ | | CZ: Czech Republic | R: Railway | | RegioJet | | | |
| RJSK | | SK: Slovakia | R: Railway | | Railjet Slowakia | | | |
| RK | | D: Germany | N: Narrow gauge railway | | Rendsburger Kreisbahn | | | |
| RKB | | DK: Denmark | R: Railway | | Rødkærsbro - Kjellerup Banen (Kjellerupbanen) | 1912 - 1924 | | |
| RKH | | D: Germany | B: Bus | | Regionalverkehr Kurhessen GmbH | | https://de.wikipedia.org/wiki/Regionalverkehr_Kurhessen | |
| RL | | USA: United States of America | R: Railway | | Rutland Line | | | |
| RLCX | RLEX | USA: United States of America | P: Pool (Leasing / wagon pool) | | Relco Locomotives Inc. | | | |
| RLG | | D: Germany | ??? | | Regionalverkehr Ruhr-Lippe GmbH Soest u. Hochsauerland | | | |
| RLGX | | USA: United States of America | R: Railway | | Rail Logix | | | |
| RLIX | | USA: United States of America | R: Railway | | Rail Link | | | |
| RLPP | | PL: Poland | P: Pool (Leasing / wagon pool) | | Rail-Loco Pawel Plata | | | |
| RLTK | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | RailTrack | | | |
| RLX | | SK: Slovakia | A: Aviation | | Go2Sky | | https://en.wikipedia.org/wiki/Go2Sky | |
| RM | | I: Italy | ??? | | | | | |
| RMB | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Routemaster Buses Ltd. | | | |
| RMBC | | USA: United States of America | O: Organisation | | RMB Club | | | |
| RMCH | RM | CH: Switzerland | R: Railway | | RM: Regionalverkehr Mittelland AG | | | |
| RML | | I: Italy | B: Bus | | Roma Marche Linee Spa. | | | |
| RMMI | | I: Italy | Y: Military | | Reggia Marina Militare Italiana | | | |
| RMPATP5 | | RUS: Russia | B: Bus | Rostov | | | | |
| RMRX | | USA: United States of America | R: Railway | | Rocky Mountaineer Railtours | | | |
| RMSX | | USA: United States of America | M: Industry (railway maintenance) | | Harsco Track Technologies | | | |
| RMT | | CH: Switzerland | TB: Tourist agency | | Reisebüro Mittelthurgau | | | |
| RMV | | D: Germany | C: City traffic | | Rhein-Main-Verkehrsverbund | | | |
| RNA | | D: Germany | A: Aviation | | Rhein-Meckar Air | Operated by MHS Aciation GmbH | https://en.wikipedia.org/wiki/Rhein-Neckar_Air | |
| RNB | | DK: Denmark | R: Railway | | Ringe - Nyborg Banen | 1897 - 1962 | | |
| RNLAF | | NL: Netherlands | Y: Military | | Koninklijke Luchtmacht (Royal Netherlands Air Force) | | | |
| RNOAF | | N: Norway | Y: Military | | Royal Norwegian Air Force (Luftforsvaret) | | https://en.wikipedia.org/wiki/Royal_Norwegian_Air_Force | |
| RNRX | | USA: United States of America | R: Railway | | Reading & Northern Railroad Systems | | | |
| RNV | | D: Germany | C: City traffic | | Rhein-Neckar-Verkehr GmbH | | https://de.wikipedia.org/wiki/Rhein-Neckar-Verkehr | |
| RNZAF | | NZ: New Zealand | YA: Military: Air force | | Royal New Zealand Air Force | | https://en.wikipedia.org/wiki/Royal_New_Zealand_Air_Force | |
| ROADR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Harlow | Roadrunner | | | |
| ROAF | | RO: Romania | Y: Military | | Romanian Air Force | | https://en.wikipedia.org/wiki/Romanian_Air_Force | |
| ROCA | | RC: Taiwan | Y: Military | | Republic of China Army | | | |
| ROCK | | USA: United States of America | R: Railway | | Chicago, Rock Island and Pacific Ry. Co | 1975 - 1980 | | |
| ROCKLAND | | USA: United States of America | B: Bus | | Rockland Coaches | A Coach USA company | | |
| ROCM | | RC: Taiwan | Y: Military | | Republic of China Marine Corps | | | |
| ROCO | | X: Global | TOY: Toy, modell | | | | | |
| ROD | | D: Germany | B: Bus | Rodewisch | | | | |
| ROG | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Rail Operations Group | | https://en.wikipedia.org/wiki/Rail_Operations_Group | |
| ROHDE | RVB | D: Germany | B: Bus | | Rohde Verkehrsbetriebe GmbH | | https://de.wikipedia.org/wiki/Rohde_Verkehrsbetriebe | |
| ROHJ | | DK: Denmark | R: Railway | | Ringkøbing - Ørnhøj - Holstebro Jernbane (Ørnhøjbanen) | 1925 - 1961 | | |
| RORU | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Road Runner | Fleetname for some S.M.Coaches operations | | |
| ROT | RET | NL: Netherlands | C: City traffic | Rotterdam | Rotterdamse Elektrische Tram | | | |
| ROTA | ROT | RO: Romania | A: Aviation | | TAROM - Transporturile Aeriene Române | | https://en.wikipedia.org/wiki/TAROM | |
| ROTEDD | | D: Germany | B: Bus | | Die Rote Doppeldecker GmbH | | | |
| ROTHC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Rotherham Corporation Transport | | | |
| ROTTAL | | CH: Switzerland | B: Bus | | Rottal Auto AG | | https://www.rottal.ch/ | |
| ROUEN | | F: France | C: City traffic | Rouen | | | | |
| RP | | RO: Romania | I: Industry (user) | | Rompetrol Logistics | | www.rompetrol-logistics.ro/ | |
| RPCX | | USA: United States of America | R: Railway | | Ralston Purina Co. | | | |
| RPOOL | | D: Germany | P: Pool (Leasing / wagon pool) | | RailPool GmbH | | | |
| RPOST | | D: Germany | O: Organisation | | Deutsche Reichspost | | | |
| RPRC | | USA: United States of America | R: Railway | | Richmond Pacific Railroad Corporation | | | |
| RPRO | | NL: Netherlands | M: Industry (railway maintenance) | | RailPro | | | |
| RPRX | | USA: United States of America | F: Industry (manufacturer) | | Rail Power Technologies | | | |
| RR | | USA: United States of America | R: Railway | | Raritan River R.R. Co. | | | |
| RRC | | USA: United States of America | R: Railway | | Respondek Railroad Corporation | | | |
| RRF | | NL: Netherlands | P: Pool (Leasing / wagon pool) | | Rotterdam Rail Feeding | Rotterdam Rail Feeding is a company providing shunting and hauling services to third parties. | | |
| RROY | | ??? | T: Type of car, lorry | | Rolls Royce | | | |
| RRP | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Railroad Passenger Cars Service | | | |
| RRPX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Rail Road Power Leasing | | | |
| RRRR | | USA: United States of America | R: Railway | | Rock & Rail, Inc. | | | |
| RS | | USA: United States of America | R: Railway | | Roberval and Saguenay Ry. Co. | | | |
| RSAG | | D: Germany | C: City traffic | Rostock | | | | |
| RSBL | | D: Germany | R: Railway | | RSB Logistic | | http://www.rsb-logistic.com/ | |
| RSC | | DK: Denmark | R: Railway | | DB Schenker Rail Scandinavia A/S | 2009 - | | |
| RSCO | | RO: Romania | P: Pool (Leasing / wagon pool) | | Rolling Stock Company | | rsco.ro | |
| RSCX | | USA: United States of America | I: Industry (user) | | Republic Steel Corporation | | | |
| RSE | | D: Germany | R: Railway | | Rhein-Sieg-Eisenbahn | | www.rhein-sieg-eisenbahn.de/ | |
| RSTK | | RO: Romania | P: Pool (Leasing / wagon pool) | | Rolling Stock Company | | | |
| RSTS | | D: Germany | I: Industry (user) | | Ruhr-Stickstoff AG | | | |
| RSTV | | D: Germany | R: Railway | | Rinteln-Stadthagener Verkehrsbetriebe | | | |
| RSU | | BOL: Bolivia | A: Aviation | | Compania Boliviana de Transporte Aereo Privado Aerosur, S.A. | | | |
| RSV | | D: Germany | C: City traffic | | Reutlinger Stadtverkehrsgesellschaft mbH | | | |
| RSVG | | D: Germany | B: Bus | Siegburg | Rhein-Sieg Verkehrsgesellschaft mbH Troisdorf | | | |
| RT | | D: Germany | C: City traffic | Reutlingen | | | | |
| RTA | | USA: United States of America | C: City traffic | | Regional Transportation Authority, Chicago | | | |
| RTACA | RTA | US-CA: USA, California | C: City traffic | Riverside | Riverside Transit Agency | | https://www.riversidetransit.com | |
| RTAF | | F: France | R: Railway | | Régie des transports de l'Aisne | | | |
| RTB | | D: Germany | R: Railway | | Rurtalbahn | former Dürener Kreisbahn | | |
| RTBC | | D: Germany | R: Railway | | RTB Cargo | | | |
| RTBO | | CH: Switzerland | B: Bus | | RTB Rheintal Bus | | https://de.wikipedia.org/wiki/Bus_Ostschweiz | |
| RTBORN | | NL: Netherlands | ??? | | Rail Terminal Born | | | |
| RTC | | I: Italy | ??? | | Rail Traction Company | | | |
| RTCQ | RTC | CDN: Canada | C: City traffic | Quebec | Reseau de transport de la Capitale | | | |
| RTCSN | | USA: United States of America | C: City traffic | Las Vegas | Regional Transportation Commission of Southern Nevada | | | |
| RTCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Republic Tank Car Co. | | | |
| RTD | | USA: United States of America | C: City traffic | Denver | Regional Transportation District | | http://www.rtd-denver.com/ | |
| RTEC | | MD: Moldova | C: City traffic | Chișinău | Regia Transport Electric Chișinău | | https://en.wikipedia.org/wiki/Trolleybuses_in_Chi%C8%99in%C4%83u | |
| RTEJO | | P: Portugal | B: Bus | | Rodoviária do Tejo, S.A. | | | |
| RTEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Rail Trusts Equipment Inc. | | | |
| RTK | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | | ~Sorin Oprisan | | |
| RTM | | NL: Netherlands | ??? | | Rotterdamsche Tramweg Maatschappij | | | |
| RTMA | RTM | F: France | C: City traffic | Marseille | | | | |
| RTMIN | RT | E: Spain | I: Industry (user) | | Rio Tinto Minera | | | |
| RTO | | AUS: Australia | I: Industry (user) | | Rio Tinto Group | Mining company | | |
| RTOD | RTO | F: France | C: City traffic | Dijon | | | | |
| RTOG | | DK: Denmark | R: Railway | | Regionstog A/S | 2009 | | |
| RTRAN | | A: Austria | R: Railway | | RailTrans | | | |
| RTRI | | J: Japan | F: Industry (manufacturer) | | Railway Technical Research Institute | | | |
| RTS | | A: Austria | R: Railway | | Rail Transport Service GmbH | | http://www.rts-austria.at/ | |
| RTSA | rts | AUS: Australia | M: Industry (railway maintenance) | | Rail Technical Support | | | |
| RTSC | RTS | CH: Switzerland | R: Railway | | RTS Rail Traction Services (Switzerland) AG | | http://www.r-t-s.ch/ | |
| RTSRC | | USA: United States of America | B: Bus | | Regional Transit Service | in Riverside, California | | |
| RTTP | | LV: Latvia | C: City traffic | Riga | Rīgas Tramvaju un Trolejbusu Pārvalde | | | |
| RTW | | USA: United States of America | R: Railway | | Rail To Water | | | |
| RU | | RU: Burundi | R: Railway | | Ryazan'- Urals Railway | | | |
| RUHRB | | D: Germany | C: City traffic | | Ruhrbahn GmbH | Es entstand im Jahr 2017 aus der Fusion von Essener Verkehrs-AG (EVAG) und Mülheimer Verkehrsgesellschaft (MVG) | | |
| RUKB | | D: Germany | N: Narrow gauge railway | | | | | |
| RUMO | | BR: Brazil | R: Railway | | ALL-Rumo Logistica | | | A=https://de.wikipedia.org/wiki/Ruhrbahn; |
| RUN | | TR: Turkey | A: Aviation | | Air ACT | | https://en.wikipedia.org/wiki/Air_ACT | |
| RURB | | D: Germany | B: Bus | | Rurtalbus | | https://de.wikipedia.org/wiki/Rurtalbus | |
| RUSA | | RUS: Russia | Y: Military | | Armed Forces of the Russian Federation | | | |
| RUT | R | USA: United States of America | R: Railway | | Rutland Railroad | | | |
| RUTER | | N: Norway | C: City traffic | Oslo | Ruter AS | Ruter AS is the public transport authority for Oslo and Akershus counties in Norway, it is responsible for the administration, funding, and marketing (but not direct operation) of public transport in the two counties | https://en.wikipedia.org/wiki/Ruter | |
| RVA | | D: Germany | B: Bus | | Regionalverkehr Allgäu GmbH | | https://de.wikipedia.org/wiki/Regionalverkehr_Allg%C3%A4u | |
| RVB | | D: Germany | C: City traffic | Regensburg | Regensburger Verkehrsbetriebe | | | |
| RVBW | | CH: Switzerland | B: Bus | Wettingen | Regionale Verkehrsbetriebe Baden-Wettingen | | https://de.wikipedia.org/wiki/Regionale_Verkehrsbetriebe_Baden-Wettingen | |
| RVD | | D: Germany | B: Bus | | Regionalverkhr Dresden | | | |
| RVDC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Rhimney Valley District Council | | | |
| RVE | | D: Germany | B: Bus | | Regionalverkehr Euregio Maas-Rhein GmbH Aachen | | | |
| RVERZ | RVE | D: Germany | B: Bus | | Regionalverkehr Erzgebirge GmbH | | https://de.wikipedia.org/wiki/Regionalverkehr_Erzgebirge | |
| RVF | | USA: United States of America | A: Aviation | | Northern Pacific Airways | | https://en.wikipedia.org/wiki/Northern_Pacific_Airways | |
| RVK | | D: Germany | B: Bus | Köln | Regionalverkehr Köln GmbH | | | |
| RVM | | D: Germany | B: Bus | Münster | Regionalverkehr Münsterland GmbH Münster | | www.rvm-online.de/ | |
| RVO | | D: Germany | B: Bus | | Regionalverkehr Oberbayern GmbH | | | |
| RVRR | | USA: United States of America | R: Railway | | Rio Valley R.R., Inc. | | | |
| RVS | | D: Germany | B: Bus | | Regionalbusverkehr Südwest GmbH | Tochterunternehmen der DB Regio AG | | |
| RVSD | | D: Germany | RO: Railway operator | | Regionalverkehr Start Deutschland GmbH | | startgmbh.com | |
| RVSH | | CH: Switzerland | B: Bus | | Regionale Verkehrsbetriebe Schaffhausen | | | |
| RVT | | CH: Switzerland | R: Railway | | Regionalbahn Val de Travers / Val de Travers Regionalrailway | | | |
| RVW | | D: Germany | N: Narrow gauge railway | | Kleinbahn Altrahlstedt - Volksdorf - Wohldorf | | | |
| RXP | | NL: Netherlands | R: Railway | | Rail Experts | | | |
| RYBNIK | | PL: Poland | B: Bus | | Transgór Rybnik | | | |
| RYU | | J: Japan | R: Railway | | Ryutetsu (Sobu Nagareyama railway) | | https://en.wikipedia.org/wiki/Nagareyama_Line | |
| RZD | | RU: Burundi | ??? | | | | | |
| RZECZ | | PL: Poland | B: Bus | | Usługi Przewozowe Telesfor Rzeczkowski | | | |
| RZESZ | | PL: Poland | C: City traffic | | MPK Rzeszów | | | |
| S | | D: Germany | C: City traffic | Stuttgart | | | | |
| SA | | USA: United States of America | R: Railway | | Savannah & Atlanta Ry. Co. | | | |
| SAA | | ZA: South Africa | Y: Military | | South African Army | | | |
| SAAF | | ZA: South Africa | Y: Military | | South African Air Force | | | |
| SAARB | | D: Germany | C: City traffic | Saarbrücken | Stadtbahn Saar GmbH | | https://de.wikipedia.org/wiki/Saarbahn_GmbH | |
| SAARP | | D: Germany | B: Bus | Saarbrücken | Saar-Post | | | |
| SAB | | S: Sweden | R: Railway | | Skånetåg AB | 2001 - 2005 | | |
| SABB | SAB | I: Italy | RT: Regional transport company | | SAB Autoservizi | until 1990 Società Autoferrovie Bergamo | https://it.wikipedia.org/wiki/SAB_Autoservizi | |
| SABT | | A: Austria | TB: Tourist agency | Linz | Sabtours Touristik GmbH | | | |
| SACRT | RT | US-CA: USA, California | C: City traffic | Sacramento | Sacramento Regional Transit District | | | |
| SAD | | I: Italy | ??? | | SAD Nahverkehr AG | | www.vinschgauerbahn.it/ | |
| SADBB | SAD BBDS | SK: Slovakia | B: Bus | Banska Bystrica | SAD Banská Bystrica | | | |
| SADHL | | SK: Slovakia | B: Bus | | SAD Hlohovec | | | |
| SADKDS | | SK: Slovakia | B: Bus | | Slovenská autobusová doprava Košická dopravná spoločnosť | | | |
| SADLM | | SK: Slovakia | B: Bus | | Slovenskej Autobusovej Dopravy Liptovský Mikuláš | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| SADNR | | SK: Slovakia | B: Bus | | SAD Nitra | | | |
| SADPD | | SK: Slovakia | B: Bus | | SAD Prievidza | | | |
| SADPN | | SK: Slovakia | B: Bus | | SAD Piešťany | | | |
| SADPP | | SK: Slovakia | B: Bus | | SAD Poprad-Tatry | | | |
| SADRT | | US-NJ: USA, New Jersey | B: Bus | | Saddle River Tours | | | |
| SADSNV | | SK: Slovakia | B: Bus | | SAD Spišská Nová Ves | | | |
| SADTN | | SK: Slovakia | B: Bus | | SAD Trenčín | | | |
| SADTR | | SK: Slovakia | B: Bus | | SAD Trnava | | | |
| SADTRN | | SK: Slovakia | B: Bus | | SAD Trnava | | | |
| SADZI | | SK: Slovakia | B: Bus | | SAD Žilina | | | |
| SADZV | | SK: Slovakia | B: Bus | | SAD Zvolen | | | |
| SAED | | D: Germany | N: Narrow gauge railway | | Sächsischen Dampfbahngesellschaft | | | |
| SAER | | I: Italy | ??? | | Societá Anonima Esercizi Riuniti | | | |
| SAETA | SET | EC: Ecuador | A: Aviation | | Sociedad Ecuatoriana de Transporles Aereos (SAETA), S.A. | | | |
| SAFETY | | US-NJ: USA, New Jersey | TB: Tourist agency | | Safety Tours | | | |
| SAFG | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Safeguard Coaches | | http://en.wikipedia.org/wiki/Safeguard_Coaches | |
| SAG | | J: Japan | R: Railway | | Sagami Railway Co. | | | |
| SAIET | | I: Italy | R: Railway | | Societá Anonima Imprese E Trasporti, Pisa | | | |
| SAIF | | I: Italy | R: Railway | | Societa Anonima Industriale Ferroviaria | Ferrovia Bribano-Agordo | | |
| SAIT | SR | J: Japan | R: Railway | | Saitama Railway Co., Ltd. | | | |
| SAKAI | | J: Japan | B: Bus | | Sakai Transport | | | |
| SAL | | USA: United States of America | R: Railway | | Seaboard Air Line | | | |
| SALB | SAB | D: Germany | R: Railway | | Schwäbische Alb-Bahn GmbH | | www.alb-bahn.com | |
| SALC | | I: Italy | M: Industry (railway maintenance) | | Salcef Spa | | | |
| SALCEF | | I: Italy | M: Industry (railway maintenance) | | SALCEF S.p.A. | | http://www.salcef.com | |
| SALEM | | US-NJ: USA, New Jersey | C: City traffic | | Salem County Transit | | | |
| SALFCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Salford Corporation Transport | | | |
| SALZ | | D: Germany | N: Narrow gauge railway | | Berchtesgaden Salzbergwerk | | | |
| SAMARA | | RUS: Russia | C: City traffic | Samara | | | | |
| SAMP | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Sampsons | | | |
| SAMTR | | USA: United States of America | B: Bus | San Mateo | San Mateo County Transit District | | | |
| SAN | | USA: United States of America | R: Railway | | Sandersville Railroad | | | |
| SANCO | | J: Japan | R: Railway | | Mie Kotsu Co., Ltd. | | | |
| SANDTOFT | | GB: United Kingdom of Great Britain and Northern Ireland | V: Museum | | Trolleybus Museum at Sandtoft | | https://sandtoft.org/wp | |
| SANGI | | J: Japan | R: Railway | San Diego | Sangi Railway | | | |
| SANOK | | PL: Poland | B: Bus | | MKS Sanok | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| SANR | | J: Japan | R: Railway | | Sanriku Railway | | http://www.sanrikutetudou.com/ | |
| SANS | SS | USA: United States of America | R: Railway | | Sand Springs | | | |
| SANSORIA | | US-NJ: USA, New Jersey | B: Bus | | Sansori Transportation | | | |
| SAR | | ZA: South Africa | R: Railway | | South African Railways and Harbours | | | |
| SARA | | D: Germany | R: Railway | | Saar Rail GmbH | | | |
| SARPA | | CO: Colombia | A: Aviation | | Servicios Aéreos Panamericanos S.A.S. | | https://en.wikipedia.org/wiki/SARPA | |
| SARR | | FAN: Fantasy | X: Phantasy | | Circus Sarrasani | | | |
| SAS | | S: Sweden | A: Aviation | | Scandinavian Airlines | | | |
| SASA | | I: Italy | B: Bus | | SASA AG | | https://de.wikipedia.org/wiki/SASA | |
| SASK | | CDN: Canada | B: Bus | | Saskatchewan Transportation Company | | | |
| SAT | | J: Japan | R: Railway | | Sendai Airport Railway System | | | |
| SATA | | YV: Venezuela | A: Aviation | | SATA: Servicio Autónomo de Transporte Aéreo | | | |
| SATE | NSE | CO: Colombia | A: Aviation | | SATENA Servicio Aereo a Territorios Nacionales | | https://en.wikipedia.org/wiki/SATENA | |
| SATED | | I: Italy | R: Railway | | SA Tramvie Elettriche Dogliani | | | |
| SATP | SAT | P: Portugal | A: Aviation | | SATA Air Açores | | https://en.wikipedia.org/wiki/SATA_Air_A%C3%A7ores | |
| SATTI | | I: Italy | ??? | | Societá per Azioni Transporti Torinesi Intercommunali | | | |
| SAULT | | CDN: Canada | B: Bus | | Sault Saint Marie Transit | | | |
| SAUR | SAR | AUS: Australia | R: Railway | | South Australian Railways | | | |
| SAURER | | CH: Switzerland | T: Type of car, lorry | | | | | |
| SAV | | USA: United States of America | R: Railway | | Sacramento Valley Railroad | | | |
| SAVTE | | I: Italy | ??? | | Societa Anonima Verbano Trazione Elettrica | | | |
| SAX | K.Sächs.Sts.E.B. | D: Germany | R: Railway | | Königlich Sächische Staatseisenbahn | | | |
| SB | | DK: Denmark | R: Railway | | Skagensbanen | 1924 - 2001 | | |
| SBAG | | A: Austria | C: City traffic | Salzburg | Salzburg AG | | https://de.wikipedia.org/wiki/Salzburg_AG | |
| SBAN | | J: Japan | B: Bus | | Sapporo Bankei Co. Ltd. | | https://ja.wikipedia.org/wiki/%E6%9C%AD%E5%B9%8C%E3%81%B0%E3%82%93%E3%81%91%E3%81%84 | |
| SBB | | CH: Switzerland | R: Railway | | SBB-CFF | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| SBBC | | CH: Switzerland | R: Railway | | SBB Cargo | | | |
| SBBCI | | CH: Switzerland | RO: Railway operator | | SBB Cargo International | SBB Cargo International, jointly founded at the beginning of 2011 with the intermodal transport operator Hupac, operates shuttle trains on the north-south transit routes. | https://en.wikipedia.org/wiki/SBB_Cargo | |
| SBC | | MEX: Mexico | R: Railway | | Ferrocarril Sonora Baja California, S.A. de C.V. | | | |
| SBD | | USA: United States of America | R: Railway | | Seaboard System Railroad Inc. | | | |
| SBEG | | D: Germany | TOY: Toy, modell | | Südbergische Eisenbahngesellschaft | | | |
| SBESK | | PL: Poland | B: Bus | | PPKS Sucha Beskidzka | | | |
| SBG | | G: Gabon | B: Bus | | SüdbadenBus GmbH | | http://www.suedbadenbus.de | |
| SBI | | RUS: Russia | A: Aviation | | S7 Airlines (Siberian Airlines) | | | |
| SBK | | US-NY: USA, New York | R: Railway | | South Brooklyn Railway | | | |
| SBKR | | CH: Switzerland | B: Bus | Kreuzlingen | Stadtbus Kreuzlingen | | | |
| SBM | | NL: Netherlands | B: Bus | Maastricht | Stadsbus Maastricht | | | |
| SBR | | NL: Netherlands | ??? | | | | | |
| SBSL | | SGP: Singapore | C: City traffic | | Singapore Bus Services Limited | | | |
| SBST | | SGP: Singapore | C: City traffic | | SBS Transit | former Singapore Bus Services | | |
| SBVR | | USA: United States of America | R: Railway | | South Branch Valley | | | |
| SC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Southern Railway | 1999: 710km standard gauge, electrified at 750V= 3rd rail Southern (New Southern Railway Ltd.) is the latest name of the train operating company that took over from Connex South Central on the routes to South London, Surrey, and Sussex from Victoria and London Bridge. On 30 May 2004, the franchise was rebranded as Southern.. Southern also operates the cross-London Watford Junction to Gatwick Airport / Brighton route via Kensington (Olympia) and Clapham Junction (the West London Line). The franchise is owned by Govia, a joint venture between transport groups Go-Ahead Group and Keolis. | http://www.southernrailway.com/ | |
| SCANIA | | S: Sweden | T: Type of car, lorry | | Scania | | | |
| SCARD | | US-NY: USA, New York | B: Bus | | Scarsdale Bus Company | | | |
| SCAT | | US-CA: USA, California | B: Bus | | South Coast Area Transit | | | |
| SCAX | | USA: United States of America | C: City traffic | | Metrolink, Southern California Regional Rail Authority | | | |
| SCB | | CH: Switzerland | R: Railway | | | | | |
| SCC | | USA: United States of America | I: Industry (user) | | Susquehanna Coal Co. | | | |
| SCCTD | | US-CA: USA, California | C: City traffic | San Jose | Santa Clara County Transit District | | https://en.wikipedia.org/wiki/Santa_Clara_Valley_Transportation_Authority#History | |
| SCCX | | USA: United States of America | I: Industry (user) | | Shell Oil Co. | | | |
| SCD | | MEX: Mexico | P: Pool (Leasing / wagon pool) | | Servicios de Coches Dormitorios | | | |
| SCEL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach East London | | | |
| SCFE | | USA: United States of America | R: Railway | | South Central Florida Express, Inc. | | | |
| SCH | | D: Germany | I: Industry (user) | | Sägewerk Schwaiger GmbH & Co | | | |
| SCHAU | ESS | D: Germany | M: Industry (railway maintenance) | | Ernst Schauffele Schienenverkehrs GmbH & Co KG | | | |
| SCHB | | CH: Switzerland | R: Railway | | Schöllenenbahn | | https://de.wikipedia.org/wiki/Sch%C3%B6llenenbahn | |
| SCHENCK | | USA: United States of America | B: Bus | | Schenck Transportation Corp. | | | |
| SCHENK | | CH: Switzerland | I: Industry (user) | Rolle | Schenk Vins SA | | | |
| SCHEU | | CH: Switzerland | M: Industry (railway maintenance) | | Scheuchzer S.A. | | | |
| SCHMET | | D: Germany | B: Bus | | Schmetterling Reise- und Verkehrs-Logistik GmbH | | | |
| SCHMIDTW | | D: Germany | B: Bus | Wolfenbüttel | Reisebüro Schmidt GmbH | | https://www.der-schmidt.de | |
| SCHON | | D: Germany | C: City traffic | Schöneiche | | | | |
| SCHUY | | US-PA: USA, Pennsylvania | B: Bus | | Schuylkill Valley Lines | | | |
| SCHW | | D: Germany | M: Industry (railway maintenance) | | Schweerbau | | | |
| SCL | | USA: United States of America | R: Railway | | Seaboard Coast Line | | | |
| SCLS | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach Lincolnshire | | | |
| SCMC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach Manchester | | | |
| SCMID | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach Midland | | | |
| SCNC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach Newcastle | | | |
| SCO | | SGP: Singapore | A: Aviation | | Scoot | | | |
| SCON | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Southern Connect | | | |
| SCOT | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Abellio ScotRail | | https://en.wikipedia.org/wiki/Abellio_ScotRail | |
| SCOX | | USA: United States of America | I: Industry (user) | | The Scoular Co. | | | |
| SCRTD | | USA: United States of America | B: Bus | | Southern California Regional Transit District | | | |
| SCRZ | | USA: United States of America | I: Industry (user) | | Squaw Creek Coal Company | | | |
| SCSE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Stagecoach Selkent | | | |
| SCT | | AUS: Australia | R: Railway | | Specialized Container Transport | | | |
| SCTC | | I: Italy | R: Railway | | Societá Cusiana Trasporti Costruzioni (Gossano) | | | |
| SCTD | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Sheffield Corporation Transport Department | | | |
| SCWB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecoach Western Buses | | | |
| SDA | | USA: United States of America | R: Railway | | San Diego & Arizona Railway | | | |
| SDAF | | SUD: Sudan | Y: Military | | Sudan Air Force | | | |
| SDIY | | USA: United States of America | R: Railway | | San Diego & Imperial Valley | | | |
| SDJR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Somerset and Dorset Joint Railway | The Somerset & Dorset Joint Railway, also known as the S&D, was an English railway line connecting Bath (in north-east Somerset) and Bournemouth (now in south-east Dorset but then in Hampshire), with a branch from Evercreech Junction to Burnham-on-Sea and Bridgwater. Strictly speaking, the main line ran from Bath Junction to Broadstone, as the line between Broadstone and Bournemouth was owned by the London and South Western Railway, while the line between Bath Junction and Bath was owned by the Midland Railway. | | |
| SDNX | | USA: United States of America | R: Railway | | San Diego Northern Railway | | | |
| SDOMM | | DOM: Dominican Republic | C: City traffic | | Santo Domingo Metro | | | |
| SDPSV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Copthorne | Southdown PSV | | | |
| SDR | | RO: Romania | R: Railway | | Sudarec | | | |
| SDRA | SDR | D: Germany | A: Aviation | | Sundair | | https://en.wikipedia.org/wiki/Sundair | |
| SDRX | | USA: United States of America | I: Industry (user) | | Sinclair Refining Co. | | | |
| SDT | | US-CA: USA, California | C: City traffic | | San Diego Transit | | | |
| SDWX | | USA: United States of America | I: Industry (user) | | Cemex Inc. | | | |
| SE | | F: France | R: Railway | | Société Générale des chemins de fer économique | | https://fr.wikipedia.org/wiki/Soci%C3%A9t%C3%A9_g%C3%A9n%C3%A9rale_des_chemins_de_fer_%C3%A9conomiques_(France) | |
| SEAB | | USA: United States of America | R: Railway | | Seaboard System | | | |
| SEATD | | USA: United States of America | C: City traffic | | Southeast Area Transit | SEAT’s member towns are: East Lyme, Griswold, Groton, Lisbon, Montville, New London, Norwich, Stonington and Waterford. | https://www.southeastareatransitdistrict.com/about-us/ | |
| SEB | STE | D: Germany | C: City traffic | Strausberg | Strausberger Eisenbahn GmbH | | www.strausberger-eisenbahn.de/ | |
| SECO | | F: France | M: Industry (railway maintenance) | | SECO Rail | | | |
| SECX | | USA: United States of America | I: Industry (user) | | South-East Coal Co. | | | |
| SEFEPA | | RA: Argentina | R: Railway | | Servicios Ferroviarios Patagónico | Ferrocarriles Patagónicos -> Roca division of Ferrocarriles Argentinos -> Servicios Ferroviarios Patagónico. Popular name: Tren Patagónico. | | |
| SEFT | | CH: Switzerland | TU: Touristic railway | | Società Esercizio Ferroviario Turistico | | | |
| SEFTA | | I: Italy | C: City traffic | | Societa` Emiliana Ferrovie Tranvie Automobili Modena | | | |
| SEH | | D: Germany | V: Museum | | Süddeutsches Eisenbahnmuseum Heilbronn | | | |
| SEIBUK | | J: Japan | B: Bus | | Seibu Kogen Bus | | | |
| SEINO | | J: Japan | R: Railway | | Seino Railway | | https://en.wikipedia.org/wiki/Sein%C5%8D_Railway | |
| SEK | | D: Germany | R: Railway | | Hafen- und Bahnbetriebe der Stadt Krefeld | | | |
| SEL | | D: Germany | P: Pool (Leasing / wagon pool) | | Schlünß Eisenbahn Logistik | | sel-eisenbahn.de | |
| SELK | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Selkent | | | |
| SELNEC | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Manchester | South East Lancashire North East Cheshire Passenger Transport Executive | | | |
| SEM | | D: Germany | V: Museum | Chemnitz-Hilbersdorf | Sächsisches Eisenbahnmuseum | | | |
| SEMB | | J: Japan | R: Railway | | Semboku Rapid Railway | Semboku Rapid Railway is the railroad route of the Osaka Prefectural Urban Development | | |
| SEMTA | | USA: United States of America | C: City traffic | Detroit | SouthEastern Michigan Transportation Authority | | | |
| SEND | | J: Japan | C: City traffic | | Sendai City Transportation Bureau | | | |
| SENSE | | CH: Switzerland | R: Railway | | Sensetalbahn | | | |
| SEPR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | South Eastern Provincial | | | |
| SEPTA | | USA: United States of America | C: City traffic | | Southeast Pennsylvania Transportation Authority | | | |
| SERA | | USA: United States of America | R: Railway | | Sierra Railroad | | | |
| SERCO | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | Serco Group Plc | | https://en.wikipedia.org/wiki/Serco | |
| SERF | | I: Italy | R: Railway | | Servizi Ferroviari Srl | An FS Cargo subsidiary, operates nationwide in the sectors of planning, building and operation of railway sidings. | | |
| SERSA | | CH: Switzerland | M: Industry (railway maintenance) | | | | | |
| SET | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | South Eastern Trains | South Eastern Trains (SET) was a British train operating company, in public ownership, who provided train services in south east London and South East England from November 2003 to March 2006. SET operated on 773 miles (1237 km) of tracks, with 178 stations. 82% of their train services ran into London (Charing Cross, Blackfriars, Cannon Street, and Victoria). They were replaced by commercial operator Southeastern. | http://www.setrains.co.uk/ | |
| SETG | | A: Austria | RO: Railway operator | | Salzburger EisenbahnTransportLogistik GmbH | | | |
| SETRA | | A: Austria | T: Type of car, lorry | | Setra | | | |
| SETRB | | LT: Lithuania | C: City traffic | | UAB Setrabus | | | |
| SETS | | US-WA: USA, Washington | C: City traffic | | Seattle Transit System | | | |
| SEVEN | | USA: United States of America | B: Bus | | Seven Bus Company | | | |
| SEVI | | PL: Poland | B: Bus | | Sevibus Wrocław | | | |
| SEZ | | CH: Switzerland | R: Railway | | Spiez-Erlenbach-Zweisimmen-Bahn | | | |
| SF | | USA: United States of America | C: City traffic | San Francisco | | | | |
| SFAP | | US-CA: USA, California | B: Bus | | SF Airporter | | | |
| SFB | | I: Italy | R: Railway | | Strada Ferrata di Biella, Biella-Santhiá | | | |
| SFBD | SFB | DK: Denmark | R: Railway | | Svendborg - Fåborg Banen | 1916 - 1954 | | |
| SFE | | USA: United States of America | R: Railway | | Santa Fe | | | |
| SFEN | | I: Italy | ??? | | | | | |
| SFFR | | USA: United States of America | R: Railway | | | | | |
| SFH | | D: Germany | P: Pool (Leasing / wagon pool) | | Schienenfahrzeuge Export-Import Handelsgesellschaft mbH | | | |
| SFJ | | DK: Denmark | R: Railway | | Sydfynske Jernbane (Svendborgbanen) | 1876 - 1949 | | |
| SFLR | | USA: United States of America | R: Railway | | The Shore Fast Line, Inc. | | | |
| SFM | | E: Spain | N: Narrow gauge railway | | Serveis Ferroviaris de Mallorca | | tib.caib.es/terrestre/index_tren.en.htm | |
| SFMB | SFM | I: Italy | R: Railway | | Servizio Ferroviario Metropolitano bolognese | | | |
| SFO | | USA: United States of America | A: Aviation | | San Francisco Airport | | | |
| SFPP | | USA: United States of America | I: Industry (user) | | Spruce Fall Power & Paper | | | |
| SFRD | | USA: United States of America | R: Railway | | Santa Fe Refrigerator Dispatch | | | |
| SFS | | I: Italy | ??? | | Strade Ferrate Sovvenzionate | | | |
| SFSM | | I: Italy | R: Railway | | Strade Ferrate Secondarie Meridionali | | | |
| SFT | | RO: Romania | R: Railway | | Softrans S.A. | | | |
| SFTC | | RO: Romania | F: Industry (manufacturer) | | Softronic | | | |
| SFV | | I: Italy | N: Narrow gauge railway | | Ferrovia Roma-Fiuggi-Alatri-Frosinone | | | |
| SGA | | CH: Switzerland | R: Railway | | | | | |
| SGAF | | SGP: Singapore | Y: Military | | Singapore Army | | | |
| SGB | | NL: Netherlands | ??? | | Stoomtram Goes-Borsele | | | |
| SGL | | D: Germany | R: Railway | | SGL Schienen Güter Logistik GmbH | | | |
| SGLR | | USA: United States of America | R: Railway | | Seminole Gulf | | | |
| SGOK | | RUS: Russia | I: Industry (user) | | Stojlenskij | Opencast mining "Stojlenskij", Stary Oskol, Belgorod area in Russia | | |
| SGW | | F: France | P: Pool (Leasing / wagon pool) | | Société de Gérance de Wagons de Grande Capacité | | | |
| SH | | USA: United States of America | R: Railway | | Steelton & Highspire | | | |
| SHANG | | PRC: China | C: City traffic | Shanghai | Shanghai Metro | | | |
| SHAT | | FAN: Fantasy | R: Railway | | Shatty Railway | | | |
| SHB | | DK: Denmark | R: Railway | | Silkeborg - Herning Banen | 1877 - 1879 | | |
| SHE | | D: Germany | R: Railway | | Südharz-Eisenbahn | | | |
| SHEDD | | USA: United States of America | O: Organisation | | John G. Shedd aquarium | | | |
| SHEGA | | AL: Albania | L: Logistics company | | Shega Trans | | https://www.shega-trans.com/index_en.html | |
| SHH | | D: Germany | R: Railway | | Städtische Häfen Hannover | | | |
| SHIM | | J: Japan | R: Railway | | Shimabara Railway | | https://en.wikipedia.org/wiki/Shimabara_Railway | |
| SHIMO | | J: Japan | R: Railway | | Shimotsui Railway | | https://ja.wikipedia.org/wiki/%E4%B8%8B%E6%B4%A5%E4%BA%95%E9%9B%BB%E9%89%84%E7%B7%9A | |
| SHIN | | J: Japan | R: Railway | | Shinano Railway Company | | | |
| SHINB | | RC: Taiwan | B: Bus | | Shin-Shin Bus | | | |
| SHINH | | J: Japan | R: Railway | | Shinano Railway (historical) | 1911 - 1937 | | |
| SHIZ | | J: Japan | R: Railway | | Shizuoka Railway | | | |
| SHIZJ | | J: Japan | B: Bus | | Shizutetsu Justline | | | |
| SHK | SK | D: Germany | I: Industry (user) | | Seehafen Kiel | | www.port-of-kiel.de/DEUTSCH/GF_BAHN.HTM | |
| SHL | | S: Sweden | ??? | | | | | |
| SHM | | NL: Netherlands | ??? | | Stoomtram Hoorn-Medemblik | | | |
| SHO | | NL: Netherlands | ??? | | Stoomclub Hoogovens | | | |
| SHORTLINE | | USA: United States of America | B: Bus | | Short Line Bus | A Coach USA company | | |
| SHOWA | | J: Japan | I: Industry (user) | | Showa Electric Co. | | | |
| SHPX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Shippers' Car Line Corp. | | | |
| SHTL | SL | NL: Netherlands | R: Railway | | ShortLines | | | |
| SHU | | RUS: Russia | A: Aviation | | SAT Airlines | | | |
| SHUD | | USA: United States of America | B: Bus | | South Hudson Boulevard IBOA | | | |
| SI | | USA: United States of America | R: Railway | | Spokane International R.R. Co. | | | |
| SIA | | SGP: Singapore | A: Aviation | | Singapore Airlines Limited | | | |
| SIBIU | | RO: Romania | C: City traffic | | Sibiu: Tursib | | | |
| SIBZD | | RUS: Russia | R: Railway | | Siberian Railway | | | |
| SIDER | | I: Italy | I: Industry (user) | | Siderpotenza Steel Works | | | |
| SIE | | D: Germany | F: Industry (manufacturer) | | Siemens | | | |
| SIEB | | D: Germany | C: City traffic | Siegburg | | | | |
| SIED | | PL: Poland | C: City traffic | | Miejskie Przedsiębiorstwo Komunikacyjne w Siedlcach Spółka z o.o. | | https://www.mpk.siedlce.pl/ | |
| SIEG | | D: Germany | C: City traffic | Siegen | | | | |
| SIER | MPK | PL: Poland | B: Bus | Sieradz | Miejskie Przedsiębiorstwo Komunikacji w Sieradzu | | | |
| SIFT | | I: Italy | R: Railway | | Societá Italiana Ferrovie e Tranvie | | | |
| SIGMA | | PL: Poland | R: Railway | | SIGMA Sp. z o.o. | | http://www.sigmawagon.pl/ | |
| SILA | | AUS: Australia | R: Railway | | Silverton Rail | | | |
| SILB | | I: Italy | B: Bus | Castelrotto | Silbernagl | | | |
| SILD | | USA: United States of America | S: Street transport company | | Dick Simon Trucking Inc. | | | |
| SILF | | I: Italy | M: Industry (railway maintenance) | | S.I.L.F. S.p.A., Bari | | | |
| SILV | SL | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Silverlink Train Services Ltd. | 1999: 282km standard gauge, electrified at 25kV 50Hz and 750V= 3rd rail Silverlink Trains is a regional franchise in the British railway system with routes in suburban London and from London to Northampton. It is owned by National Express Group plc. | http://www.silverlink-trains.com/ | |
| SIMI | | US-CA: USA, California | C: City traffic | | Simi Valley Transit | | | |
| SIO | | H: Hungary | C: City traffic | Siófok | Siófok | | | |
| SIOUX | SCT | USA: United States of America | C: City traffic | Sioux City, IA | Sioux City Transit | | https://en.wikipedia.org/wiki/Sioux_City_Transit | |
| SIPPEL | | D: Germany | B: Bus | | Sippel GmbH | | | |
| SIRT | | USA: United States of America | C: City traffic | New York | Staten Island Rapid Transit | | | |
| SIRX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Southern Illinois Railcar Company | | | |
| SITAC | | F: France | C: City traffic | Calais | Calais Opale Bus | | | |
| SITB | | CH: Switzerland | R: Railway | | Sihltalbahn | | https://de.wikipedia.org/wiki/Sihltalbahn | |
| SITFA | | I: Italy | L: Logistics company | | Societa Italiana Trasporti Ferroviari Autoveicoli spa | | https://www.sitfa.net/ | |
| SJ | | S: Sweden | ??? | | | | | |
| SJGX | | USA: United States of America | M: Industry (railway maintenance) | | S.J. Groves & Sons Construction Co | | | |
| SJNO | | N: Norway | RO: Railway operator | In June 2020 SJ (from Sweden) took over all operations north of Oslo from Vy (former NSB). This involves the services on Oslo-Trondheim, Trondheim-Bodo, Dombas-Andalsnes, Hamar-Roros-Trondheim, Trondheim-Storlien(-Sundsvall) and local trains around Trondheim and Bodo. The concession will run for 8 years, with options for another 2 years. | SJ Norge AS | | https://www.sj.no/ | |
| SJO | | J: Japan | A: Aviation | | Spring Airlines Japan | | | |
| SJS | | DK: Denmark | R: Railway | | Det Sjællandske Jernbaneselskab | 1848 - 1893 | | |
| SJTU | | US-PR: USA, Puerto Rico | C: City traffic | | San Juan Tren Urbano | | | |
| SK | | D: Germany | R: Railway | | Siegener Kreisbahn | Renamed to KSW - Kreisbahn Siegen-Wittgenstein GmbH | www.siegener-kreisbahn.de/ | |
| SKAF | | SK: Slovakia | Y: Military | | Slovak Air Force | | https://en.wikipedia.org/wiki/Slovak_Air_Force | |
| SKAND | | SK: Slovakia | B: Bus | | SKAND Skalica | | | |
| SKANE | | S: Sweden | OA: Authority organizing city and regional transport | | Skanetrafiken | | https://en.wikipedia.org/wiki/Sk%C3%A5netrafiken | |
| SKEI | | J: Japan | R: Railway | | Shin-Keisei Electric Railway | | | |
| SKG | | SR: Serbia | R: Railway | | Srbija Kargo | | | |
| SKGF | | SK: Slovakia | Y: Military | | Ground Forces of the Slovak Republic | | | |
| SKIER | | PL: Poland | C: City traffic | | MZK Skierniewice | | https://pl.wikipedia.org/wiki/Miejski_Zak%C5%82ad_Komunikacji_Skierniewice | |
| SKINE | | EST: Estonia | P: Pool (Leasing / wagon pool) | | Skinest Rail AS | | skine.ee | |
| SKJB | | S: Sweden | R: Railway | | Skandinaviska Jernbanor AB | | | |
| SKK | | TG: Togo | A: Aviation | | Asky Airlines | | https://en.wikipedia.org/wiki/Asky_Airlines | |
| SKM | | PL: Poland | C: City traffic | Warszawa | Szybka Kolej Miejska w Warszawie | | | |
| SKMT | | PL: Poland | R: Railway | | PKP Fast Urban Railway in Tricity Sp. z o. o. | | http://www.skm.pkp.pl/o-nas/informacje-o-firmie | |
| SKMWA | | PL: Poland | RO: Railway operator | | Szybka Kolej Miejska Sp. z o.o. | | | |
| SKNX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Saskatchewan Grain Car Corporation | | | |
| SKODA | | CZ: Czech Republic | F: Industry (manufacturer) | | | | | |
| SKOL | | USA: United States of America | R: Railway | | South Kansas & Oklahoma R.R., Inc. | | | |
| SKPL | | PL: Poland | R: Railway | | Stowarzyszenie Kolejowych Przewozów Lokalnych | | http://skpl.pl/ | |
| SKPOST | SP | SK: Slovakia | ??? | | Slovenská posta | | | |
| SKR | | J: Japan | R: Railway | | Shigaraki Kogen Railway | | | |
| SKRJ | | DK: Denmark | R: Railway | | Silkeborg - Kjellerup - Rødkærsbro Jernbane (Kjellerupbanen) | | | |
| SKTX | | USA: United States of America | R: Railway | | Ansco Investment Co. Ski Train | | | |
| SKW | | D: Germany | I: Industry (user) | | SKW Piesteritz | | | |
| SKY | | J: Japan | A: Aviation | | Skymark Airlines | | | |
| SKYBUS | | AUS: Australia | B: Bus | | SkyBus | | | |
| SKYSS | | N: Norway | OA: Authority organizing city and regional transport | | Skyss (Vestland county) | | https://en.wikipedia.org/wiki/Skyss | |
| SKYTR | | CDN: Canada | C: City traffic | Vancouver | SkyTrain | | | |
| SKYWAYS | | ??? | ??? | | | | | |
| SL | SS | S: Sweden | C: City traffic | Stockholm | Storstockholms Lokaltrafiks | | www.sl.se/ | |
| SLAF | | CL: Sri Lanka | Y: Military | | Sri Lanka Air Force | | | |
| SLAN | | PL: Poland | B: Bus | Slanska Ruda | | | | |
| SLANC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | South Lancs Travel | | | |
| SLB | | A: Austria | ??? | | Salzburger Lokalbahn | | | |
| SLC | | USA: United States of America | R: Railway | | San Luis Central R.R. | | | |
| SLGG | | USA: United States of America | R: Railway | | Sidney & Lowe | | | |
| SLK | | SGP: Singapore | A: Aviation | | SilkAir Singapore Private Limited | | https://en.wikipedia.org/wiki/SilkAir | |
| SLM | | CH: Switzerland | F: Industry (manufacturer) | | | | | |
| SLON | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | South London | | | |
| SLQ | | CDN: Canada | R: Railway | | St. Lawrence & Atlantic R.R. (Quebec) Inc. | | | |
| SLR | | CDN: Canada | R: Railway | | St. Lawrence & Atlantic | | | |
| SLRD | | CL: Sri Lanka | R: Railway | | Sri Lanka Railway Department | | | |
| SLRG | | USA: United States of America | R: Railway | | San Luis & Rio Grande R.R. Inc. | | | |
| SLRS | | USA: United States of America | R: Railway | | SMS Rail Service, Inc. | | | |
| SLSF | | USA: United States of America | R: Railway | | Saint Louis - San Francisco Railway Company (Frisco) | | | |
| SLSP | | SK: Slovakia | A: Aviation | | Slovenská letecká spolocnost | | | |
| SLTA | | SGP: Singapore | C: City traffic | Singapore | Singapore Land Transport Authority | | | |
| SLUPSK | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji Sp. z o.o. z siedzibą w Słupsku | | | |
| SLV | | S: Sweden | R: Railway | | Shortline Väst | 1994 - 2001 | | |
| SLVAG | | SK: Slovakia | P: Pool (Leasing / wagon pool) | | Slov-Vagon, a.s. | | | |
| SM | | USA: United States of America | R: Railway | | St. Marys R.R. Co. | | | |
| SMARTC | SMART | US-CA: USA, California | C: City traffic | | Sonoma–Marin Area Rail Transit | | | |
| SMARTD | SMART | USA: United States of America | C: City traffic | Detroit | Suburban Mobility Authority for Regional Transportation | Beginning operations in 1967 as the Southeastern Michigan Transportation Authority (SEMTA) in Wayne, Oakland and Macomb Counties. Its name was changed to SMART in 1989. | https://en.wikipedia.org/wiki/Suburban_Mobility_Authority_for_Regional_Transportation | |
| SMB | | CH: Switzerland | R: Railway | | Solothurn - Moutier-Bahn | | | |
| SMC | | CH: Switzerland | RT: Regional transport company | | Chemin de Fer & Autobus Sierre-Montana-Crans | | | |
| SMCO | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | S.M.Coaches | | | |
| SMED | | E: Spain | R: Railway | | Santander - Mediterrano | | | |
| SMMBL | | US-CA: USA, California | C: City traffic | | Santa Monica Municipal Bus Lines | | | |
| SMR | | ??? | R: Railway | | South Manchuria Railway | | | |
| SMRT | | SGP: Singapore | C: City traffic | Singapore | SMRT Corporation | | | |
| SMS | SLRS | USA: United States of America | R: Railway | | SMS Rail Lines | | | |
| SMT | | PRC: China | C: City traffic | | Sanghai Magnetic Train | | | |
| SMTUC | | P: Portugal | C: City traffic | | Serviços Municipalizados de Transportes Urbanos de Coimbra | | https://www.smtuc.pt/ | |
| SMVR | | USA: United States of America | R: Railway | | Santa Maria Valley Railroad | | | |
| SN | | SU: Sovietunion | Y: Military | | Sovietische Flotte/Soviet Navy | | | |
| SNA | SN | USA: United States of America | R: Railway | | Sacramento Northern Ry. | | | |
| SNAJ | SNJ | J: Japan | A: Aviation | | Skynet Asia Airways / Solaseed Air | | | |
| SNALL | | S: Sweden | RO: Railway operator | | Snälltaget AB | | | |
| SNB | | DK: Denmark | R: Railway | | Svendborg - Nyborg Banen (Hesselagerbanen) | 1897 - 1964 | | |
| SNC | | USA: United States of America | TU: Touristic railway | | Saratoga & North Creek Railway | | | |
| SNCB | | B: Belgium | ??? | | | | | |
| SNCF | | F: France | ??? | | | | | |
| SNCFA | | DZ: Algeria | R: Railway | | Société Nationale des Chemins de Fer Algériens | | | |
| SNCFFB | | ??? | R: Railway | | SNCF Fret Benelux | | | |
| SNCFT | | TN: Tunisia | R: Railway | | | | | |
| SNCR | | USA: United States of America | R: Railway | | Saratoga & North Creek Railway | | | |
| SNCT | | USA: United States of America | R: Railway | | Seattle & North Coast | | | |
| SNCV | | B: Belgium | C: City traffic | | | | | |
| SNDX | | USA: United States of America | C: City traffic | | Sounder Commuter Rail | | | |
| SNFT | | I: Italy | ??? | | SNFT - Societá Nazionale Ferrovie e Tramvie | | | |
| SNIM | | RIM: Mauritania | I: Industry (user) | | National Mining and Industrial Company | | | |
| SNNB | | DK: Denmark | R: Railway | | Stubbekøbing - Nykøbing - Nysted Banen (Stubbekøbingbanen) | 1910 - 1966 | | |
| SNOB | NOB | CH: Switzerland | R: Railway | | Nordostbahn | | | |
| SNOH | | US-WA: USA, Washington | C: City traffic | | Community Transit Snohomish County | | | |
| SNTF | | DZ: Algeria | R: Railway | | Société Nationale des Transports Ferroviaires | | | |
| SOA | | USA: United States of America | B: Bus | | South Orange Avenue IBOA | | | |
| SOB | | CH: Switzerland | R: Railway | | Südostbahn | | | |
| SOCH | ZKM | PL: Poland | B: Bus | Sochaczew | Zakład Komunikacji Miejskiej Sochaczew | | | |
| SOCHA | | PL: Poland | B: Bus | | Przewóz Osób i Towarów Leszek Socha | | | |
| SOCHI | | RUS: Russia | B: Bus | Sochi | MUP SochiAvtotrans | | | |
| SODU | | LT: Lithuania | C: City traffic | Klaipeda | UAB Sodų autobusai | | | |
| SOFIA | | BG: Bulgaria | C: City traffic | Sofia | Sofia Public Electrical Transport Company | | | |
| SOFIB | | BG: Bulgaria | B: Bus | Sofia | Sofia Public Bus Transport Company | | | |
| SOGETANK | | I: Italy | P: Pool (Leasing / wagon pool) | | Sogetank | | | |
| SOGRAF | | I: Italy | I: Industry (user) | | Sograf | | | |
| SOL | | D: Germany | C: City traffic | Solingen | Stadtwerke Solingen | | | |
| SOLA | | PL: Poland | F: Industry (manufacturer) | | Solaris | | | |
| SOLBUS | | PL: Poland | T: Type of car, lorry | | Solbus | | https://en.wikipedia.org/wiki/Solbus | |
| SOLLER | | E: Spain | C: City traffic | | Palma-Sóller | | | |
| SOM | | H: Hungary | B: Bus | | Somló Volán | | | |
| SOME | SOM | USA: United States of America | R: Railway | | Somerset Railroad | | | |
| SOMERSET | | USA: United States of America | B: Bus | | Somerset Bus Co | | | |
| SOMF | | P: Portugal | M: Industry (railway maintenance) | | Somafel | | | |
| SOMR | som | USA: United States of America | R: Railway | | Somerset R.R. Corp. | | | |
| SOO | | USA: United States of America | R: Railway | | Soo Line Railroad | | | |
| SOR | | CZ: Czech Republic | T: Type of car, lorry | | SOR s.r.o | | https://en.wikipedia.org/wiki/SOR_Libchavy | |
| SORTA | | USA: United States of America | C: City traffic | | Southwest Ohio Regional Transit Authority | | | |
| SOT | | J: Japan | R: Railway | | Sagami Railway (Sotetsu) | | | |
| SOU | | USA: United States of America | R: Railway | | Southern Railway System | | | |
| SOUE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Southend Corporation | | | |
| SOUTR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Southern Transit Bus Company | | | |
| SOUTST | | USA: United States of America | B: Bus | | Southeastern Stages | A Greyhound subsidiary | | |
| SOV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Sovereign Bus and Coach | London Country North East was bought by AJS and Parkdale in April 1988, then divided into two chunks in January 1989. Sovereign Bus and Coach was based at Hatfield and Stevenage. | | |
| SOVTR | | RUS: Russia | S: Street transport company | | Sovtranstvo | | | |
| SOYX | | USA: United States of America | I: Industry (user) | | Minnesota Soybean Processors | | | |
| SP | | USA: United States of America | R: Railway | | Southern Pacific | Southern (New Southern Railway Ltd.) is the latest name of the train operating company that took over from Connex South Central on the routes to South London, Surrey, and Sussex from Victoria and London Bridge. The company was originally known as South Central, but on 30 May 2004, the franchise was rebranded as Southern, in a deliberate recollection of pre-nationalisation Southern Railway. Southern also operates the cross-London Watford Junction to Gatwick Airport / Brighton route via Kensington (Olympia) and Clapham Junction (the West London Line). The franchise is owned by Govia, a joint venture between transport groups Go-Ahead Group and Keolis. | http://www.southernrailway.com/ | |
| SPA | | E: Spain | Y: Military | | Spanish Army | | | |
| SPAD | | PL: Poland | B: Bus | | Szczecińskie Przedsiębiorstwo Autobusowe Dąbie | | | |
| SPAK | | PL: Poland | B: Bus | | Szczecińskie Przedsiębiorstwo Autobusowe Klonowica | | https://en.wikipedia.org/wiki/Szczeci%C5%84skie_Przedsi%C4%99biorstwo_Autobusowe_%22Klonowica%22 | |
| SPANG | | D: Germany | B: Bus | | Omnibus-Unternehmen Johann Spangler | In the AVV: Augsburger Verkehrs- und Tarifverbund | | |
| SPB | | CH: Switzerland | R: Railway | | Schynige Platte Bahn | | | |
| SPBB | | PL: Poland | C: City traffic | | Starostwo Powiatowe w Bielsku-Bialej | | | |
| SPCC | | PE: Peru | I: Industry (user) | | Southern Peru Copper Corporation | | www.southernperu.com/ | |
| SPDEM | | MEX: Mexico | R: Railway | | Southern Pacific de México | | | |
| SPENO | | CH: Switzerland | M: Industry (railway maintenance) | | Speno International SA | | https://www.speno.ch/en/homepage/ | |
| SPGK | | PL: Poland | C: City traffic | Sanok | Sanockie Przedsiêbiorstwo Gospodarki Komunalnej sp. z o.o. | | | |
| SPIEK | | D: Germany | N: Narrow gauge railway | | Inselbahn Spiekeroog | | | |
| SPITZKE | SLG | D: Germany | R: Railway | | Spitzke Logistik GmbH | | www.slg-mbh.de/ | |
| SPLASL | | USA: United States of America | R: Railway | | San Pedro, Los Angeles & Salt Lake Railroad | | | |
| SPM | | MEX: Mexico | R: Railway | | Southern Pacific R.R. of Mexico | | | |
| SPPK | | PL: Poland | B: Bus | Police | Szczecińsko-Polickie Przedsiębiorstwo Komunikacyjne Sp. z o.o. | | | |
| SPR | | BR: Brazil | R: Railway | | Sao Paulo Railway | | | |
| SPRT | ST | USA: United States of America | R: Railway | | Springfield Terminal Railway Company | | | |
| SPS | | USA: United States of America | R: Railway | | Spokane Portland & Seattle | | | |
| SPT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Glasgow | Strathclyde Partnership for Transport | | | |
| SPTE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Strathclyde Passenger Transport Executive | | | |
| SPUD | | USA: United States of America | R: Railway | | St. Paul Union Depot Co. | | | |
| SQM | | RCH: Chile | I: Industry (user) | | Sociedad Química y Minera | | http://en.wikipedia.org/wiki/Sociedad_Qu%C3%ADmica_y_Minera | |
| SR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Southern Railway | From the merger of the London and South Western Railway, London Brighton and South Coast Railway and South Eastern and Chatham Railway | | |
| SRA | | AUS: Australia | R: Railway | | State Rail Authority of New South Wales | | | |
| SRAF | | RHO: Colony of South-Rhodesia | YA: Military: Air force | | Southern Rhodesia Air Force | | https://en.wikipedia.org/wiki/Rhodesian_Air_Force | |
| SRAX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Southern Rail Associates Inc. | | | |
| SRB | | A: Austria | ??? | | Südburgenländische Regionalbahn | | | |
| SRC | | SUD: Sudan | R: Railway | | Sudan | | | |
| SRCR | SRC | USA: United States of America | R: Railway | | Strasburg Rail Road | | | |
| SRD | | USA: United States of America | R: Railway | | Scenic Rail Dining | | | |
| SRDG | | D: Germany | I: Industry (user) | | Stahlberg Roensch Duisburg GmbH | | | |
| SRDX | | USA: United States of America | I: Industry (user) | | Sunray D-X Oil Co. | | | |
| SRENN | STAR | F: France | C: City traffic | | Service des Transports en Commun de l'Agglomération Rennaise (STAR) | | | |
| SRFN | | I: Italy | R: Railway | | Societá Romana Ferrovie del Nord | | | |
| SRI | | D: Germany | P: Pool (Leasing / wagon pool) | | SRI Rail Invest | | | |
| SRIL | SLR | CL: Sri Lanka | R: Railway | | Sri Lanka Railways | | | |
| SRLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Swift Refrigerator Line | | | |
| SRN | | USA: United States of America | R: Railway | | Sabine River & Northern R.R. Co. | | | |
| SRNJ | | USA: United States of America | R: Railway | | Southern Railroad Company of New Jersey | | | |
| SRO | SAR | SA: Saudi-Arabia | R: Railway | | | | | |
| SROX | | USA: United States of America | O: Organisation | | U.S. Department of Energy, Savannah River Operations Office | | | |
| SRP | | DK: Denmark | R: Railway | | Scandic Rail Partners ApS | 2006 - | | |
| SRR | | J: Japan | R: Railway | | Sendai Rinkai Railway | | https://en.wikipedia.org/wiki/Sendai_Rinkai_Railway | |
| SRS | | USA: United States of America | M: Industry (railway maintenance) | | Sperry Rail Service | | | |
| SRT | | T: Thailand | R: Railway | | State Railway of Thailand | | http://www.railway.co.th/ | |
| SRTD | | USA: United States of America | C: City traffic | | Sacramento Regional Transit District | | http://www.sacrt.com/ | |
| SRTR | SRT | CH: Switzerland | R: Railway | | Swiss Rail Traffic | | | |
| SRU | | PL: Poland | B: Bus | Slanska Ruda | | | | |
| SRY | | CDN: Canada | R: Railway | | Southern Railway of British Columbia | | | |
| SRYC | | USA: United States of America | R: Railway | | Sierra Railway Co. of California | | | |
| SS | | NL: Netherlands | R: Railway | | Staatsspoorwegen (State Railways) | | | |
| SSANG | | ROK: Korea | I: Industry (user) | | Ssangyong Cement Industrial Co. | | | |
| SSB | | D: Germany | C: City traffic | Stuttgart | | | | |
| SSBR | | D: Germany | TB: Tourist agency | | SSB Reisen | | | |
| SSDK | | USA: United States of America | R: Railway | | Savannah State Docks Railroad | | | |
| SSF | | D: Germany | C: City traffic | Feuerbach | Städtische Straßenbahn Feuerbach | | | |
| SSFM | SFM | I: Italy | R: Railway | | Societa per le Strade Ferrate Meridionali | | https://en.wikipedia.org/wiki/Societ%C3%A0_per_le_Strade_Ferrate_Meridionali | |
| SSIF | | I: Italy | N: Narrow gauge railway | | Societa Subaplina Imprese Ferroviarie | | www.vigezzina.com/ | |
| SSN | | NL: Netherlands | V: Museum | | Stoom Stichting Nederland | | | |
| SSO | | D: Germany | C: City traffic | Offenbach | Städtische Straßenbahn Offenbach | | | |
| SSR | | AUS: Australia | R: Railway | | Southern Shorthaul Railroad | | | |
| SSRS | | AUS: Australia | R: Railway | | Spur South Rail Services | | | |
| SSRT | | S: Sweden | R: Railway | | Affärsverket Statens Järnvägar | 2001 - | | |
| SSSL | | USA: United States of America | C: City traffic | Chicago | South Suburban Safeway Lines | | | |
| SSW | | USA: United States of America | R: Railway | | St. Louis Southwestern Railway (Cotton Belt) | | | |
| ST | | CH: Switzerland | R: Railway | | Sursee-Triengen-Bahn | | | |
| STA | | AUS: Australia | R: Railway | | National Rail Corporation - SeaTrain | | | |
| STAB | | S: Sweden | P: Pool (Leasing / wagon pool) | | Svensk Tågkraft AB | 2004 - | | |
| STAC | | F: France | C: City traffic | Chambéry | Service de transport de l’agglomération chambérienne | | | |
| STAG | | CH: Switzerland | F: Industry (manufacturer) | | Stadler Rail | | | |
| STAGC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stagecarriage | | https://www.stagecarriage.co.uk | |
| STAR | | NL: Netherlands | ??? | | Stichting Stadskanaal Rail | | | |
| STARP | | PE: Peru | A: Aviation | | Aerolíneas Star Perú S.A. | | https://en.wikipedia.org/wiki/Star_Per%C3%BA | |
| STARR | | US-NJ: USA, New Jersey | B: Bus | | STARR | | | |
| STAS | | F: France | C: City traffic | St. Etienne | | | | |
| STAT | | CDN: Canada | C: City traffic | | St. Albert Transit | | | |
| STAZT | | BG: Bulgaria | C: City traffic | | Trolleybusni Prevoz Stara Zagora | | | |
| STB | | CH: Switzerland | R: Railway | | Seetalbahn | | | |
| STBE | STB | D: Germany | R: Railway | | Süd-Thüringen Bahn | a subsidiary of the Erfurter Industriebahn | | |
| STBR | | D: Germany | C: City traffic | | Stadtwerke Bad Reichenhall | | | |
| STC | | CDN: Canada | B: Bus | | Saskatchewan Transportation Company | | | |
| STCE | | F: France | C: City traffic | Calais | Société des Transports de Calais et Extensions | | | |
| STCM | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Manchester | Stagecoach Manchester | | | |
| STCUM | | CDN: Canada | C: City traffic | | Société de transport de la communauté urbaine de Montréal | 1985-06-20 - 2001-12-31 | | |
| STCUQ | | CDN: Canada | C: City traffic | | Quebec Urban Community Transit Commission | | | |
| STE | | USA: United States of America | R: Railway | | Stockton Terminal and Eastern R.R. | | | |
| STEB | | CH: Switzerland | R: Railway | | Stansstad-Engelberg-Bahn | | | |
| STEG | | A: Austria | A: Aviation | | Österreichisch-ungarische Staatseisenbahngesellschaft | | https://de.wikipedia.org/wiki/%C3%96sterreichisch-ungarische_Staatseisenbahngesellschaft# | |
| STEINO | | CH: Switzerland | B: Bus | | Steinerbus AG, Ortschwaben | | | |
| STEINWAY | | USA: United States of America | B: Bus | | Steinway Bus | | | |
| STEL | | I: Italy | C: City traffic | Milano - Monza | Societa Trazione Elettrica Lombarda | | | |
| STENBUS | | CZ: Czech Republic | B: Bus | Praha | Stenbus, s.r.o. | | | |
| STER | | USA: United States of America | T: Type of car, lorry | | Sterling | | | |
| STF | SFJ | J: Japan | A: Aviation | | Starflyer | | | |
| STGE | | D: Germany | I: Industry (user) | | Stahl Gerlafingen AG | | | |
| STGS | | PL: Poland | C: City traffic | | Miejski Zakład Komunikacji w Stargardzie Szczecińskim. | Until 31.12.2015 Miejski Zakład Komunikacji w Stargardzie Szczecińskim. Until 31.12.2017 Miejski Zakład Komunikacji w Stargardzie. From 1.01.2018 Miejskie Przedsiębiorstwo Komunikacji w Stargardzie | | |
| STH | | A: Austria | F: Industry (manufacturer) | | Stern & Hafferl | | | |
| STHB | STB | D: Germany | R: Railway | | Süd-Thüringen-Bahn | | www.sued-thueringen-bahn.de/ | |
| STHEL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stephenson's Helmsley | | | |
| STHK | | D: Germany | N: Narrow gauge railway | | Straußberg-Herzfelder Kleinbahn | near Berlin | | |
| STI | | CH: Switzerland | C: City traffic | | Verkehrsbetriebe STI (Steffisburg-Thun-Interlaken) | | | |
| STIB | | B: Belgium | C: City traffic | Bruxelles | | | | |
| STLB | | A: Austria | ??? | | Steiermärkische Landesbahnen | | | |
| STLBM | SBM | USA: United States of America | R: Railway | | The St. Louis, Brownsville & Mexico Ry. (Gulf Coast Lines) | | | |
| STLH | | USA: United States of America | R: Railway | | St. Lawrence & Hudson Railway Company Limited | | | |
| STLK | SL ? | AUS: Australia | R: Railway | | National Rail Corporation - SteelLink | | | |
| STM | | CDN: Canada | C: City traffic | Montréal | Société de transport de Montréal | | | |
| STMB | | D: Germany | R: Railway | | Steinhuder Meer-Bahn | | | |
| STOAG | | D: Germany | C: City traffic | Oberhausen | Stadtwerke Oberhausen AG | | | |
| STOH | | CDN: Canada | B: Bus | Hull (Quebec) | STO | | | |
| STOUT | | US-NJ: USA, New Jersey | B: Bus | | Sout's Transportation | | | |
| STP | | RUS: Russia | C: City traffic | St. Petersburg | | | | |
| STPA | SI | I: Italy | R: Railway | | Sistemi Territoriali S.p.a. | | https://en.wikipedia.org/wiki/Sistemi_Territoriali | |
| STPGE | | RUS: Russia | C: City traffic | | Gorelektrotrans Sankt Petersburg | | https://en.wikipedia.org/wiki/Trams_in_Saint_Petersburg | |
| STPPA | | RUS: Russia | C: City traffic | St. Petersburg | Passazhiravtotrans Sankt Petersburg | | | |
| STPTP | | RUS: Russia | B: Bus | Sankt Petersburg | Tretiy Park (Third parc) | | https://3park.ru | |
| STRAIL | | ??? | TY: Vehicle/object type | | Semitrailer | | | |
| STRAN | | F: France | C: City traffic | Saint-Nazaire | Société des transports de l'agglomération nazairienne | | | |
| STRCT | | CDN: Canada | B: Bus | | Strathcona County Transit | | | |
| STRD | | F: France | C: City traffic | Dijon | | | | |
| STREK | | ??? | X: Phantasy | | Star Trek | | | |
| STRSM | | CDN: Canada | B: Bus | Longueuil (Quebec) | Société de transport de la Rive-Sud de Montréal | | | |
| STRT | | USA: United States of America | R: Railway | | The Stewartstown R.R. Co. | | | |
| STRUKTON | | NL: Netherlands | M: Industry (railway maintenance) | | | | | |
| STS | | D: Germany | RO: Railway operator | | Städtebahn Sachsen | | | |
| STSTZ | | CH: Switzerland | C: City traffic | Zürich | Städtische Straßenbahn Zürich | | | |
| STSW | | D: Germany | C: City traffic | Szczecin | Stettiner Stadtwerke | | | |
| STSX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | A. E. Staley Manufacturing | | | |
| STT | | S: Sweden | M: Industry (railway maintenance) | | Svensk Tågteknik AB | | | |
| STTR | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Stansted Transit | | | |
| STUB | | A: Austria | N: Narrow gauge railway | | Stubaitalbahn | | | |
| STUF | | D: Germany | ??? | | Stufenbahn | | | |
| STUTG | | D: Germany | N: Narrow gauge railway | | Stuttgart, Lilliput Eisenbahn | | | |
| STV | | I: Italy | R: Railway | | Sistemi Territoriali S.p.A. (Regione Veneto) | | http://www.sistemiterritorialispa.it/ | |
| STVA | | F: France | L: Logistics company | | Société de Transports de Véhicules Automobiles | | | |
| STVL | SL | D: Germany | C: City traffic | Lübeck | Stadtverkehr Lübeck | | | |
| STWB | | D: Germany | C: City traffic | Bamberg | Stadtwerke Bamberg | | | |
| STWM | VSM | D: Germany | B: Bus | Münster | Stadtwerke Münster GmbH - Verkehrsbetrieb Stadtwerke Münster | | | |
| STZ | | CZ: Czech Republic | I: Industry (user) | | Setuza a.s. | | | |
| SU | | SU: Sovietunion | ??? | | | Other trams, busses, trucks, cars from the former Sovietunion | | |
| SUBBUS | | PL: Poland | B: Bus | Nowa Sól | Miêdzygminne Przedsiêbiorstwo Komunikacyjne "SubBus" Sp. z o.o. | | | |
| SUBT | | SR: Serbia | C: City traffic | | Subotica Trans | | | |
| SUBURB | | USA: United States of America | B: Bus | | Suburban Transit | A Coach USA company | | |
| SUCC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Surray County Council | | | |
| SUD | | A: Austria | R: Railway | | Südbahn | | | |
| SUDB | | CDN: Canada | C: City traffic | | Greater Sudbury Transit | | | |
| SUFB | | USA: United States of America | B: Bus | | Suffolk Bus Corporation | | | |
| SUFT | | USA: United States of America | C: City traffic | | Suffolk Transit | | | |
| SUGIZAKI | | J: Japan | B: Bus | | Sugizaki Kanko Bus Co. | | | |
| SUI | | CH: Switzerland | Y: Military | | Swiss Air Force | | | |
| SUMIC | | J: Japan | I: Industry (user) | | Sumitomo Cement | | | |
| SUNDCT | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Sunderland Corporation Transport | | | |
| SUNDS | | US-CA: USA, California | B: Bus | | Sundance Stage Lines | | | |
| SUNFAI | | HK: Hong Kong | B: Bus | Hong Kong | Sun Fai Transportation Co | | | |
| SUNT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Sunray Travel | | | |
| SUNTR | | USA: United States of America | C: City traffic | | Sun Tran | | | |
| SURC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Surrey Connect | | | |
| SURFTS | | USA: United States of America | B: Bus | | Surface Transportation System | | | |
| SUSX | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Sussexbus | | | |
| SV | | I: Italy | ??? | | SV - Societá Veneta | | | |
| SVA | | SA: Saudi-Arabia | A: Aviation | | Saudia | ormerly: Saudi Arabian Airlines | https://en.wikipedia.org/wiki/Saudia | |
| SVB | | A: Austria | C: City traffic | Salzburg | Salzburger Stadtwerke – Verkehrsbetriebe | | https://de.wikipedia.org/wiki/Salzburger_Stadtwerke | |
| SVBO | SVB | I: Italy | R: Railway | | Suburbana Bologna | | | |
| SVD | | NL: Netherlands | B: Bus | | Stadsvervoer Dordrecht | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| SVE | | D: Germany | C: City traffic | Esslingen | Städtischer Verkehrsbetrieb Esslingen | | http://www.sve-es.de | |
| SVEFT | | I: Italy | ??? | | SVEFT (Rimini - San Marino) | | | |
| SVF | | D: Germany | C: City traffic | Frankfurt/Oder | | | | |
| SVFI | SVF | I: Italy | M: Industry (railway maintenance) | | Scala Virgilio & Figli S.p.A. | | | |
| SVG | | D: Germany | V: Museum | Stuttgart - Bad Cannstatt | Schienenverkehrsgesellschaft mbH | | | |
| SVGX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Savage Services Corp. | | | |
| SVJ | | DK: Denmark | R: Railway | | Skive - Vestsalling Jernbane (Vestsallingbanen) | 1924 - 1966 | | |
| SVM | | D: Germany | B: Bus | | Stadtverkehr Maintal | | | |
| SVO | | SR: Serbia | R: Railway | | Srbija Voz | | | |
| SVT | | RO: Romania | R: Railway | | Servtrans Invest S.A. | | | |
| SVTX | | USA: United States of America | R: Railway | | Seaview Transportation Co. | | | |
| SVV | | H: Hungary | C: City traffic | Sopron | Soproni Villamos Vasút | | | |
| SVX | | USA: United States of America | I: Industry (user) | | Socony Mobil Oil Co., Inc. | | | |
| SVZ | | D: Germany | C: City traffic | | Stadtverkehr Zwickau | | | |
| SW | | CH: Switzerland | A: Aviation | | Swissair | | | |
| SWA | | D: Germany | C: City traffic | Augsburg | | | | |
| SWAF | | S: Sweden | Y: Military | | Swedish Air Force | | | |
| SWANG | | AUS: Australia | TB: Tourist agency | | Swan Gold Tours | | | |
| SWAR | | ??? | X: Phantasy | | Star Wars | | | |
| SWB | | D: Germany | C: City traffic | Bonn | Stadtwerke Bonn GmbH | | | |
| SWBS | SWB | S: Sweden | R: Railway | | Stockholm - Västerås - Bergslagens Järnvägar | 1875 - 1944 | | |
| SWCT | | CH: Switzerland | TU: Touristic railway | | Swiss Classic Train | | https://trainvapeur.ch/swiss-classic-train/?lang=en | |
| SWD | | D: Germany | C: City traffic | Dachau | Stadtwerke Dachau | | https://de.wikipedia.org/wiki/Stadtwerke_Dachau | |
| SWDE | | D: Germany | R: Railway | | SüdWestDeutschen Eisenbahnen | Die französiche Militärregierung hatte die Abtrennung des Eisenbahnverwaltung von der der übrigen Besatzungszonen verfügt, in der Erwartung einer dauerhaften Abtrennung ihres Besatzungsgebiets von Restdeutschland. Mit Gründung der BRD - unter Einschluß der französichen Besatzungszone - wurde dies obsolet | | |
| SWEA | | S: Sweden | Y: Military | | Swedish Army | | | |
| SWEB | | D: Germany | C: City traffic | | Stadtwerke Eberswalde | | | |
| SWEG | | D: Germany | R: Railway | | Südwestdeutsche Verkehrs-AG | | www.sweg.de/ | |
| SWF | | D: Germany | C: City traffic | Frankfurt/M | Stadtwerke Frankfurt | | | |
| SWFREI | | D: Germany | C: City traffic | Freising | Stadtwerke Freising | | | |
| SWG | | D: Germany | C: City traffic | Görlitz | | | | |
| SWH | | D: Germany | C: City traffic | | Stadtwerke Hof | | | |
| SWID | | PL: Poland | B: Bus | | MPK Swidnica | | | |
| SWIER | | PL: Poland | B: Bus | | Przedsiębiorstwo Komunikacji Miejskiej Świerklaniec | | https://pl.wikipedia.org/wiki/Przedsi%C4%99biorstwo_Komunikacji_Miejskiej_%C5%9Awierklaniec | |
| SWISS | SWR, LX | CH: Switzerland | A: Aviation | | Swiss International Air Lines | | | |
| SWK | | D: Germany | B: Bus | Krefeld | | | | |
| SWKL | | D: Germany | C: City traffic | Kaiserslautern | Stadtwerke Kaiserslautern | | | |
| SWKZ | SWK | D: Germany | C: City traffic | Konstanz | Stadtwerke Konstanz | | | |
| SWL | | D: Germany | C: City traffic | | Stadtwerke Lübeck | | | |
| SWLIN | | D: Germany | C: City traffic | Lindau | Stadtwerke Lindau | | | |
| SWMG | | D: Germany | C: City traffic | Mönchengladbach | Stadtwerke Mönchengladbach | | | |
| SWMO | | D: Germany | C: City traffic | Mönchengladbach | Stadtwerke Mönchengladbach | | | |
| SWN | | D: Germany | C: City traffic | Nordhausen | | | | |
| SWO | | D: Germany | C: City traffic | Osnabrück | Stadtwerke Osnabrück | | | |
| SWP | | D: Germany | C: City traffic | Pforzheim | Stadtwerke Pforzheim | | | |
| SWPA | | D: Germany | C: City traffic | Passau | Stadtwerke Passau | | | |
| SWPR | SWP | USA: United States of America | R: Railway | | Southwest Pennsylvania R.R. Co. | | | |
| SWR | SW | USA: United States of America | R: Railway | | Southwestern Railroad Co. Inc. | | | |
| SWREG | | D: Germany | C: City traffic | | Stadtwerke Regensburg | | | |
| SWRH | | D: Germany | C: City traffic | | Stadtwerke Rheydt | Rheydt was included in Mönchengladbach in 1975 | | |
| SWRU | | D: Germany | C: City traffic | | Stadtwerke Rüsselsheim | | | |
| SWS | | CH: Switzerland | I: Industry (user) | Schlieren | Schweiz. Wagons- und Aufzügefabrik | | | |
| SWSC | | USA: United States of America | R: Railway | | Streets Western Stable Company | | | |
| SWSF | | D: Germany | C: City traffic | Schweinfurt | Stadtwerke Schweinfurt | | | |
| SWST | | D: Germany | C: City traffic | | Stadtwerke Straubing | | | |
| SWT | | GB: United Kingdom of Great Britain and Northern Ireland | ??? | | South West Trains | 1999: 934km standard gauge, electrified at 750V= 3rd rail | | |
| SWTA | SWT, WT | E: Spain | A: Aviation | | SwiftAir | | | |
| SWTAB | | S: Sweden | RO: Railway operator | | SWT Swedtrac Trafik AB | | | |
| SWTR | SWT | D: Germany | C: City traffic | Trier | Stadtwerke Trier | | | |
| SWTU | SWT | D: Germany | C: City traffic | | Stadtwerke Tübingen | | | |
| SWWEI | SWG | D: Germany | C: City traffic | Weimar | Stadtwirtschaft Weimar GmbH | 2002- | https://de.wikipedia.org/wiki/Stadtwirtschaft_Weimar | |
| SWWIH | | D: Germany | C: City traffic | | Stadtwerke Wilhelmshaven | | | |
| SXS | | TR: Turkey | A: Aviation | | SunExpress | | https://en.wikipedia.org/wiki/SunExpress | |
| SY | | NL: Netherlands | ??? | | Syntus B.V. | | www.syntus.nl | |
| SYDNEY | | AUS: Australia | C: City traffic | Sydney | | | | |
| SYDT | ST | S: Sweden | R: Railway | | Sydtåg | 1991 - 1997 | | |
| SYLT | | D: Germany | N: Narrow gauge railway | | Sylter Inselbahn | | | |
| SYMTC | | PRC: China | C: City traffic | Shenyang | Shenyang Metro | | http://www.symtc.com/ | |
| SYPTE | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Leeds | South Yorkshire Passenger Transport Executive | | | |
| SYVG | SVG | D: Germany | B: Bus | | Sylter Verkehrsgesellschaft | | https://www.svg-busreisen.de/ | |
| SZ | | SLO: Slovenia | ??? | | Slowenia | | | |
| SZAB | | H: Hungary | B: Bus | | Szabolcs Volán | | | |
| SZCZ | MZK | PL: Poland | C: City traffic | Szczecin | MZK Szczecin | | | |
| SZD | | SU: Sovietunion | ??? | | | | | |
| SZFV | | H: Hungary | C: City traffic | Székesfehérvár | Alba Volán Székesfehérvár | | | |
| SZIL | H-SAEV | H: Hungary | N: Narrow gauge railway | | Szilvásvárad | | | |
| SZKT | | H: Hungary | C: City traffic | Szeged | Szeged | | | |
| SZMC | | PRC: China | C: City traffic | Shenzhen | Shenzhen Metro Group | | | |
| SZOB | BKNK | H: Hungary | N: Narrow gauge railway | | Szobi kisvasút | | | |
| SZOL | | H: Hungary | N: Narrow gauge railway | | Szolnok | | | |
| SZOSTEK | | PL: Poland | B: Bus | | Prywatna Komunikacja Samochodowa, A. Szostek | | | |
| SZRP | | PL: Poland | Y: Military | | Polish Armed Forces - Siły Zbrojne Rzeczypospolitej Polskiej | | https://en.wikipedia.org/wiki/Polish_Armed_Forces | |
| SZU | | CH: Switzerland | R: Railway | | Sihltal - Zürich - Uetliberg-Bahn / Sihltal - Zürich - Uetliberg-Railway | | | |
| SZVM | | RU: Burundi | R: Railway | | Syzran-Vyazma Railway | | | |
| SZVV | | H: Hungary | C: City traffic | Szombathely | Szombathelyi Villamos Vasút | | | |
| T30 | | ??? | Z: Scale | | Train Side View 30px | | | |
| TAA | | AUS: Australia | A: Aviation | | Trans Australia Arlines | Name is changed to Quantas in 1967 | | |
| TAAA | TAA | MEX: Mexico | A: Aviation | | Aeroservicios de la Costa | | | |
| TAB | | S: Sweden | R: Railway | | Tågfrakt AB | 1996 - | | |
| TACHI | | J: Japan | B: Bus | | Tachikawa Bus | belongs to the Odakyu Group | | |
| TAG | | USA: United States of America | R: Railway | | Tennessee, Alabama & Georgia Ry. Co. | | | |
| TAGAB | | S: Sweden | R: Railway | | Tagakeriet i Bergs;agen AB | | | |
| TAGS | TAG | I: Italy | C: City traffic | | TAG Sinnich | | | |
| TAICHUNGB | | RC: Taiwan | C: City traffic | | Taichung Bus | | | |
| TAIFUNG | | HK: Hong Kong | B: Bus | | Tai Fung Coach | | | |
| TAIHEIYO | | J: Japan | I: Industry (user) | | Taiheiyo Coal | | | |
| TAIKO | | J: Japan | B: Bus | | Taiko Bus | Subsidiary of the Odakyu Group | | |
| TAIR | TB | S: Sweden | A: Aviation | | Transair Sweden | | https://en.wikipedia.org/wiki/Transair_Sweden | |
| TAIYO | | J: Japan | B: Bus | | Taiyo Kotsu | | | |
| TAK | | EST: Estonia | C: City traffic | Tallinn | Tallinna Autobussikoondis | | | |
| TAKA | | J: Japan | R: Railway | | Takachiho Railway | | http://en.wikipedia.org/wiki/Takachiho_Railway | |
| TAKAO | | J: Japan | C: City traffic | Takaoka | | | | |
| TAKP | | P: Portugal | R: Railway | | Takargo Rail | | | |
| TALL | TLT | EST: Estonia | B: Bus | Tallin | Tallinna Linnatranspordi Aktsiaselts | | https://www.tlt.ee/en/ | |
| TAM | | F: France | C: City traffic | Montpellier | Transports de Agglomération de Montpellier | | | |
| TAMA | | J: Japan | B: Bus | | Tama Bus Co. | | | |
| TAMB | TAM | BOL: Bolivia | A: Aviation | | TAM: Transporte Aéreo Militar | | | |
| TAME | TAE | EC: Ecuador | A: Aviation | | TAME Linea Aerea del Ecuador | | | |
| TAMM | TAM | SLO: Slovenia | B: Bus | Maribor | Tovarna Avtomobilov in Motorjev Maribor | | | |
| TAMSHUI | | RC: Taiwan | B: Bus | Taipei | Tamshui Bus Company | | | |
| TAMT | | SR: Serbia | B: Bus | Beograd | GD Tamnava Trans d.o.o. | | | |
| TAN | | F: France | C: City traffic | Nantes | | | | |
| TANK | | USA: United States of America | C: City traffic | Cincinnati | Transit Authority of Northern Kentucky | | https://en.wikipedia.org/wiki/Transit_Authority_of_Northern_Kentucky | |
| TAP | | H: Hungary | C: City traffic | Tapolca | | | | |
| TAPP | TAP, TP | P: Portugal | A: Aviation | | TAP Portugal | | | |
| TAR | | TN: Tunisia | A: Aviation | | Tunisair | | https://en.wikipedia.org/wiki/Tunisair | |
| TARD | | FAN: Fantasy | R: Railway | | TransArdennes | | | |
| TARM | | IRL: Republic of Ireland | Y: Military | | Irish Army | | | |
| TARNA | | PL: Poland | B: Bus | Piekary Śląskie | Usługi Transportowe s.c. Marian Tarnawski, Mariusz Mizera | | | |
| TARNOW | | PL: Poland | B: Bus | | MPK Tarnów | | | |
| TARTA | | USA: United States of America | C: City traffic | Toledo, OH | Toledo Area Regional Transit Authority | | https://en.wikipedia.org/wiki/Toledo_Area_Regional_Transit_Authority | |
| TARZAN | | PL: Poland | B: Bus | Tarnawa Dolna | Rrzedsiebiorstwo Transportowe 'Tarzan' | | | |
| TASD | | USA: United States of America | R: Railway | | Terminal Ry. Alabama State Docks | | | |
| TASK | | UZ: Uzbekistan | C: City traffic | Tashkent | | | | |
| TASR | | AUS: Australia | R: Railway | | TasRail: Tasmanian Railway Proprietary Limited | | | |
| TASROK | | PL: Poland | B: Bus | Piekary Slaskie | Firma Przewozowa "TAS" sp.j. Tadeusz Sroka, Adam Sroka | | | |
| TATE | | J: Japan | N: Narrow gauge railway | | Tateyama Railway | | | |
| TATRA | | CZ: Czech Republic | T: Type of car, lorry | | | | | |
| TAY | | B: Belgium | A: Aviation | | TNT Airways | | | |
| TAYB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Tayside Buses | | | |
| TAYRC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Tayside Regional Council | 1975 - 1986 | | |
| TAZAO | | FAN: Fantasy | R: Railway | | Tazao | | | |
| TB | | CH: Switzerland | R: Railway | | Trogenerbahn | | | |
| TBA | | RA: Argentina | R: Railway | | Trenes de Buenos Aires | | | |
| TBCK | | J: Japan | B: Bus | Urayasu | Tokyo Bay City Kotsu | | | |
| TBILISI | | GE: Georgia | C: City traffic | Tbilisi | | | | |
| TBILT | | GE: Georgia | C: City traffic | Tbilisi | Tbilisi Tram | | | |
| TBL | | S: Sweden | P: Pool (Leasing / wagon pool) | | Tønder Bank Leasing | | | |
| TBLU | | RO: Romania | R: Railway | | Trans Blue | | | |
| TBPM | | I: Italy | R: Railway | | Tramvia Bologna P Malalbergo | | | |
| TBRL | | USA: United States of America | B: Bus | | Trans-Bridge Lines | | | |
| TBRX | | USA: United States of America | F: Industry (manufacturer) | | Taconic & Berkshire Rail Technologies | | | |
| TBTC | TTC | GE: Georgia | C: City traffic | Tbilisi | Tbilisi Transport Company | | http://ttc.com.ge | |
| TC | | USA: United States of America | R: Railway | | Tennessee Central Railway | | | |
| TCAX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Transportation Corp. of America | | | |
| TCB | | USA: United States of America | R: Railway | | Texas Central Business Lines Corp. | | | |
| TCC | | CO: Colombia | A: Aviation | | TAC: Transporte Aéreo de Colombia | TAC (acronym of Transporte Aéreo de Colombia) is a charter airline based at Alfonso Bonilla Aragón International Airport in Cali, Colombia. | https://en.wikipedia.org/wiki/TAC_Colombia | |
| TCCP | | E: Spain | B: Bus | | Transports Ciutat Comtal Pamplona | | | |
| TCDD | | TR: Turkey | ??? | | | | | |
| TCE | TE | USA: United States of America | R: Railway | | Tacoma Eastern Railway Company | | | |
| TCEP | TCE | RO: Romania | C: City traffic | Ploiești | Transport Călători Express Ploiești | | https://en.wikipedia.org/wiki/Transport_C%C4%83l%C4%83tori_Express_Ploie%C8%99ti | |
| TCG | | I: Italy | I: Industry (user) | | Tuzi Construzioni Generali | | | |
| TCL | | F: France | C: City traffic | Limoges | | | | |
| TCOMBI | | RO: Romania | R: Railway | | Transcombi S.A. Galati | | | |
| TCOU | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Town & Country | | | |
| TCRM | | F: France | C: City traffic | Metz | Transport en Commun de la Region Messine | | | |
| TCRY | | USA: United States of America | R: Railway | | Tri-City R.R. Co. | | | |
| TCSZ | | USA: United States of America | ??? | | Triple Crown Services Company | | | |
| TCTY | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | TransCity | | | |
| TCV | | CV: Cape Verde | A: Aviation | | Cabo Verde Airlines | | https://en.wikipedia.org/wiki/Cabo_Verde_Airlines | |
| TCX | | USA: United States of America | I: Industry (user) | | The Texas Co | | | |
| TCZEW | | ??? | ??? | | | | | |
| TDA | | J: Japan | A: Aviation | | Toa Domestic Airlines | | | |
| TDEV | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Transdev | | | |
| TDH | | D: Germany | RO: Railway operator | | TransDev Hannover | | | |
| TDK | TDK, PH | DK: Denmark | A: Aviation | | Transavia Denmark | | | |
| TDM | | MAL: Malaysia | Y: Military | | Tentera Darat Malaysia (Malaysian Army) | | | |
| TDT | | USA: United States of America | B: Bus | | Tri Delta Transit | | | |
| TDTR | | SK: Slovakia | B: Bus | | TD Transport (TransDev) | | | |
| TDZ | | TJ: Tajikistan | R: Railway | | | | | |
| TE | | D: Germany | N: Narrow gauge railway | | Trossinger Eisenbahn | | | |
| TEB | | I: Italy | C: City traffic | Bergamo | Tramvie Elettiche Bergamasche | | | |
| TEC | | B: Belgium | C: City traffic | | Société Régionale Wallonne du Transport | 5 regional public transport companies branded as TEC or "Transport En Commun" | https://de.wikipedia.org/wiki/Transport_en_Commun | |
| TECHAI | | B: Belgium | B: Bus | | TEC Hainaut | The bus network of the Hainaut Territorial Directorate is part of the Walloon Transport Operator (formerly SRWT) | https://fr.wikipedia.org/wiki/TEC_Hainaut | |
| TECK | TN | D: Germany | R: Railway | | Tecklenburger Nordbahn | | | |
| TECLV | | B: Belgium | C: City traffic | | TEC Liège-Verviers | | | |
| TECNOFER | | I: Italy | I: Industry (user) | | Tecnofer s.r.l. | | | |
| TECS | | A: Austria | P: Pool (Leasing / wagon pool) | | TecSol | | http://www.tecsol.at | |
| TECSA | | E: Spain | M: Industry (railway maintenance) | | | | | |
| TEDESCO | | USA: United States of America | B: Bus | | Tedesco | | | |
| TEDOM | | CZ: Czech Republic | T: Type of car, lorry | | TEDOM a.s | | | |
| TEG | | D: Germany | R: Railway | | Tagernseebahn | | | |
| TEGLA | | X: Global | I: Industry (user) | | Brick factory | | | |
| TEHRB | | IR: Iran | B: Bus | | Tehran and Suburbs Bus Company | | | |
| TEM | | CH: Switzerland | C: City traffic | Mendrisio | Società Tram Elettrici Mendrisiensi SA | It linked the town of Chiasso with Riva San Vitale, via Balerna, Mendrisio, the Società Tram Elettrici Mendrisiensi SA was incorporated in 1907, and construction started the following year, with the tramway opening in 1910. The line closed throughout in 1950, having closed between Riva San Vitale and Mendrisio in 1948. | | |
| TEMPO | | D: Germany | T: Type of car, lorry | | Tempo | Vidal & Sohn Tempo-Werk GmbH | https://de.wikipedia.org/wiki/Vidal_%26_Sohn_Tempo-Werk | |
| TEMSA | | TR: Turkey | T: Type of car, lorry | | TEMSA: Termomekanik Sanayi ve Ticaret A.Ş | | https://en.wikipedia.org/wiki/TEMSA | |
| TENG | | F: France | P: Pool (Leasing / wagon pool) | | Transengrais | | | |
| TENT | | SCG: Serbia and Montenegro | I: Industry (user) | | Termo Elektrana Nikola Tesla | | | |
| TER | | SN: Senegal | R: Railway | | Train Express Regional Dakar - AIBD | | | |
| TERNI | | I: Italy | I: Industry (user) | | Acciai Speciali Terni S.p.A. | | | |
| TET | | NL: Netherlands | B: Bus | | | | | |
| TEXC | | USA: United States of America | R: Railway | | Texas Central R.R. Co. | | | |
| TF | TRFSA | E: Spain | L: Logistics company | | Transfesa (Transportes Ferroviarios Especiales S.A.) | | https://en.wikipedia.org/wiki/Transfesa | |
| TFC | | RO: Romania | RO: Railway operator | | Transferoviar Calatori | | | |
| TFEU | | GB: United Kingdom of Great Britain and Northern Ireland | SH: Shipping company | | Transfennica Ltd. | | | |
| TFF | | FAN: Fantasy | R: Railway | | Transport Ferré Français | | | |
| TFG | | RO: Romania | RO: Railway operator | | Transferoviar Grup | | | |
| TFJ | | DK: Denmark | R: Railway | | Thisted - Fjerritslev Jernbane | 1904 - 1969 | | |
| TFM | | MEX: Mexico | R: Railway | | Grupo Transportacion Ferroviaria Mexicana | | | |
| TFRI | TF | CH: Switzerland | C: City traffic | Fribourg | Transport en commun de Fribourg | | | |
| TFT | | I: Italy | R: Railway | | Trasporto Ferroviario Toscano | | | |
| TFTM | | PRC: China | T: Type of car, lorry | | Tianjin FAW Toyota Motor Co., Ltd. | It is a manufacturing and supervising affiliate of the joint venture between Toyota Motor Company and First Automobile Works, and commonly known as FAW Toyota | | |
| TFVM | | MEX: Mexico | R: Railway | | Terminal Ferroviaria Del Valle De Mexico, S.A. de C.V. | | | |
| TGIF | | ??? | Z: Scale | | Train Gif | | | |
| TGM | | TN: Tunisia | C: City traffic | | Tunis-Goulette-Marsa | | | |
| TGOJ | | S: Sweden | R: Railway | | Trafik Grängesberg-Oxelösund Järnvägar | | | |
| TGR | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | | ~Sorin Oprisan | | |
| TGV | | F: France | ??? | | SNCF | | | |
| TGW | TGW, TT | AUS: Australia | A: Aviation | | Tiger Airways | | | |
| TGX | | USA: United States of America | I: Industry (user) | | Texas Gulf Sulphur Co. | | | |
| TH | | TOY: Toy, model | ??? | | Thomas, the Tank Engine and Friends | | | |
| THA | | F: France | R: Railway | | Thalys | | | |
| THAI | | T: Thailand | Y: Military | | Royal Thai Army | | | |
| THAL | | F: France | R: Railway | | Thalys | | | |
| THAM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Thamesway Buses | | | |
| THB | | CDN: Canada | R: Railway | | Toronto, Hamilton & Buffalo Railway Co. | | | |
| THE | | USA: United States of America | B: Bus | | Trans Hudson Express | | | |
| THEBUS | | USA: United States of America | C: City traffic | Honolulu | TheBUS: City and County of Honolulu | | https://en.wikipedia.org/wiki/TheBus_(Honolulu) | |
| THEO | | D: Germany | B: Bus | Münster | Theo`s Reisen GmbH & Co. KG. | | | |
| THF | | RO: Romania | R: Railway | | Techno Trans Feroviar | | | |
| THI | | USA: United States of America | R: Railway | | Terre Haute and Indianapolis Railroad | | | |
| THL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Thameslink Rail Ltd. | 1999: 224km standard gauge, electrified at 25kV 50Hz and 750V= 3rd rail ~ | | |
| THM | | H: Hungary | RO: Railway operator | | Train Hungary Magánvasút Kft | | | |
| THR | | J: Japan | R: Railway | | Tenryu Hamanako Railroad | | https://en.wikipedia.org/wiki/Tenry%C5%AB_Hamanako_Line | |
| THSR | | RC: Taiwan | R: Railway | | Taiwan High Speed Railway | | | |
| THT | | F: France | A: Aviation | | Air Tahiti Nui | | | |
| THUD | | USA: United States of America | B: Bus | | Trans Hudson Express | | | |
| THURBO | THB | CH: Switzerland | R: Railway | | Thurbo AG | | thurbo.ch | |
| THW | | D: Germany | O: Organisation | | Technische Hilfswerk | | | |
| THY | | TR: Turkey | A: Aviation | | Turkish Airlines | | | |
| THYS | | D: Germany | I: Industry (user) | | Thyssen-Krupp AG | | | |
| TIANJ | | PRC: China | C: City traffic | | Tianjin Metro | | | |
| TICE | | L: Luxembourg | B: Bus | | Transport intercommunal de personnes dans le canton d'Esch-sur-Alzette | | | |
| TILB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Tillingbourne | | | |
| TILLIG | | X: Global | TOY: Toy, modell | | Tillig | | | |
| TILLING | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Thomas Tilling | | | |
| TILX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Trinity Industries Leasing Co. | | | |
| TINX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Trinity Industries Leasing Co. | | | |
| TIOC | | USA: United States of America | R: Railway | | Tioga Central R.R. Co. | | | |
| TIOL | | USA: United States of America | I: Industry (user) | | Tioga Lumber Company | | | |
| TIPH | | GB: United Kingdom of Great Britain and Northern Ireland | P: Pool (Leasing / wagon pool) | | Tiphook Rail | | | |
| TIRAST | | MD: Moldova | C: City traffic | | TiraspolkyTrolleybus | | | |
| TIS | | RO: Romania | RO: Railway operator | | Transfer Internation Spedition SRL | | tts-group.ro | |
| TIV | | F: France | C: City traffic | Verdun | Transport Intercommunal Verdunois | | | |
| TJOC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Todmoren Joint Omnibus Committee | | | |
| TJR | | USA: United States of America | R: Railway | | Toledo Junction Railroad | | | |
| TJS | | D: Germany | B: Bus | Aue | TJS Resisedienst GmbH | | | |
| TKAB | | S: Sweden | R: Railway | | Svenska Tagkompaniet AB | 1999 - | | |
| TKANKO | | J: Japan | B: Bus | | Toyokanko | Part of the Keikyu Group | | |
| TKCS | | H: Hungary | N: Narrow gauge railway | | Tiszakécske | | | |
| TKOM | | D: Germany | O: Organisation | | Deutsche Telekom | | | |
| TKOMC | | PL: Poland | B: Bus | | Transkom Czerwonak | | | |
| TKOMPS | | PL: Poland | B: Bus | Piekary Śląskie | Transkom s.j. | | | |
| TKS | | RU: Burundi | RO: Railway operator | | TransClassService | | | |
| TKVJ | | DK: Denmark | R: Railway | | Troldhede - Kolding - Vejen Jernbane (Troldhedebanen) | 1917 - 1968 | | |
| TL | | D: Germany | F: Industry (manufacturer) | | Translok GmbH | | | |
| TLCRG | | CZ: Czech Republic | R: Railway | | Transport line Cargo s.r.o. | | | |
| TLCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Transport Leasing Co. | now: General Electric Rail Services Corp. | | |
| TLDX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Pullman Transport Leasing Co | | | |
| TLG | | D: Germany | R: Railway | | Transport und Logistik GmbH | | www.tlg-ag.de/ | |
| TLOC | | RO: Romania | C: City traffic | Târgu Jiu | S.C. Transloc. S.A. | | | |
| TLS | | D: Germany | F: Industry (manufacturer) | | Alstom Transport Deutschland GmbH TLS Braunschweig | | | |
| TLT | | PL: Poland | C: City traffic | Tychy | Tyskie Linie Trolejbusowe sp. z o.o. | | | |
| TLYNX | | USA: United States of America | B: Bus | | TraveLynx | | | |
| TM | | E: Spain | C: City traffic | Madrid | | | | |
| TMB | | E: Spain | C: City traffic | Barcelona | | | | |
| TMBL | | USA: United States of America | R: Railway | | Tacoma Municipal Belt Line Railway | | | |
| TMBRNO | | CZ: Czech Republic | V: Museum | | Technické muzeum Brno | | | |
| TMC | | ??? | C: City traffic | Macau | Transportas Companhia de Macau | | | |
| TMFB | | D: Germany | Y: Military | | Train Militaire Français de Berlin | | | |
| TMR | | CH: Switzerland | R: Railway | | Transports de Martigny et Régions | | | |
| TMRA | | S: Sweden | R: Railway | | TMRail AB | | http://www.tmrail.se/ | |
| TMRW | TM | USA: United States of America | R: Railway | | The Texas Mexican Ry. Co | | | |
| TMW | | PL: Poland | V: Museum | | Towarzystwo Milosników Wroclawia | | | |
| TMXR | TM | MEX: Mexico | R: Railway | | The Texas Mexican Ry. Co. | | | |
| TMZ | | CH: Switzerland | V: Museum | Zürich | Tram Museum Zürich | | | |
| TN | | USA: United States of America | R: Railway | | Texas & Northern | | | |
| TNA | | RC: Taiwan | A: Aviation | | TransAsia Airways | | | |
| TNEU | TN | CH: Switzerland | C: City traffic | Neuchâtel | Tramways de Neuchâtel | | | |
| TNJ | | USA: United States of America | B: Bus | | Transport of New Jersey | | | |
| TNMO | | USA: United States of America | B: Bus | | Texas, New Mexico, & Oklahoma Coaches | | | |
| TNMR | | USA: United States of America | R: Railway | | Texas & New Mexico Division, Austin & Northwestern R.R. Co., Inc. | | | |
| TNO | | USA: United States of America | R: Railway | | Texas and New Orleans Railroad | | | |
| TNOR | | I: Italy | R: Railway | | Trenord | | | |
| TNOWAK | | PL: Poland | B: Bus | | Transport Benedykt Nowak | | | |
| TNR | | USA: United States of America | R: Railway | | TennRail Corp. | | | |
| TNVR | | USA: United States of America | R: Railway | | Thurso & Nation Valley | | | |
| TOBU | | ??? | ??? | | | | | |
| TOC | | USA: United States of America | R: Railway | | Toledo and Ohio Central Railway | | | |
| TOCHIO | | J: Japan | R: Railway | | Tochio Railway | | https://ja.wikipedia.org/wiki/%E8%B6%8A%E5%BE%8C%E4%BA%A4%E9%80%9A%E6%A0%83%E5%B0%BE%E7%B7%9A | |
| TOE | | USA: United States of America | R: Railway | | Texas, Oklahoma and Eastern Railroad | | | |
| TOEI | | J: Japan | C: City traffic | | Toei Subway | | | |
| TOKAB | | J: Japan | B: Bus | | Tokai Bus | Subsidiary of the Odakyu Group | | |
| TOKALIM | | J: Japan | B: Bus | | Tokyo Airport Limousine | | | |
| TOKB | | J: Japan | B: Bus | | Tokachi Bus Co. Ltd. | | https://ja.wikipedia.org/wiki/%E5%8D%81%E5%8B%9D%E3%83%90%E3%82%B9 | |
| TOKM | | J: Japan | R: Railway | | Tokyo Monorail Co., Ltd. | | http://www.tokyo-monorail.co.jp/english/ | |
| TOKYB | | J: Japan | B: Bus | | Tokyo Bus Co. | | http://www.tokyobus.jp/ | |
| TOKYO | | J: Japan | C: City traffic | | Tokyo Metro Co., Ltd. | | | |
| TOKYU | | J: Japan | R: Railway | | Tokyu Corporation | | en.wikipedia.org/wiki/Tokyu_Corporation | |
| TOLL | | NZ: New Zealand | R: Railway | Tokyo | Toll Rail | | | |
| TOLUCA | | MEX: Mexico | C: City traffic | | Toluca–Mexico City commuter rail | | | |
| TOML | | PL: Poland | B: Bus | | PKS Tomaszów Lubelski | | | |
| TONYSA | | PL: Poland | B: Bus | Lodz | Transport Osobowy "Nysa" | | | |
| TOPM | | USA: United States of America | C: City traffic | Cincinnati | Topeka Metropolitan Transit Authority: Topeka Metro | | https://en.wikipedia.org/wiki/Transit_Authority_of_Northern_Kentucky | |
| TOPR | | F: France | M: Industry (railway maintenance) | | Top Rail | | | |
| TOR | | J: Japan | TU: Touristic railway | | Sagano Scenic Railway (Torokko) | | Sagano Scenic Railway | |
| TORONTO | | CDN: Canada | C: City traffic | Toronto | | | | |
| TOSA | | J: Japan | C: City traffic | Torun | Tosa Electric Railway | | | |
| TOT | | N: Norway | S: Street transport company | | Torstein Olstad Transport AS | | | |
| TOTP | | PL: Poland | B: Bus | Zabrze | Transport Osobowy Tadeusz Powichrowski | | | |
| TOUAX | | F: France | P: Pool (Leasing / wagon pool) | | Touax | | https://www.touax.com | |
| TOUL | | F: France | C: City traffic | Toulouse | | | | |
| TOWA | | J: Japan | R: Railway | | Towada Kanko Electric Railway | | https://en.wikipedia.org/wiki/Towada_Kank%C5%8D_Electric_Railway | |
| TOYA | | J: Japan | C: City traffic | Toyama | Toyama Light Rail Toyamakosen | | | |
| TOYO | | J: Japan | R: Railway | | Toyohashi Rail Road Company | Subsidiary of the Meitetsu Group | | |
| TP | | USA: United States of America | R: Railway | | Texas Pacific | | | |
| TP1 | | ??? | Z: Scale | | TransPng 1 | | | |
| TP2 | | ??? | Z: Scale | | TransPng 2 | | | |
| TPB | | CH: Switzerland | C: City traffic | Bellinzona | Transporto Pubblico del Bellinzonese | | | |
| TPBI | tpb | CH: Switzerland | C: City traffic | | Transports publics biennois / Verkehrsbetriebe Biel | | www.vb-tpb.ch | |
| TPBUS | | PL: Poland | B: Bus | Tarnowo Podgórne | Komunikacja Gminy Tarnowo Podgórne "TPBUS" sp. z o.o. | | | |
| TPC | | CH: Switzerland | RT: Regional transport company | | Transports Publics du Chablais | | https://en.wikipedia.org/wiki/Transports_Publics_du_Chablais | |
| TPE | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | First TransPennine Express | First TransPennine Express (TPE) is a train operating company in the United Kingdom. It operates regular regional services in the north of England. The franchise has been granted for eight years to a joint operation by First Group and Keolis, with an optional extension of five years. It was created by removing the long-distance routes previously operated by Arriva Trains Northern and First North Western and merging them into a single franchise. From 10th December 2004, TransPennine Express changed its name to First TransPennine Express. | http://www.tpexpress.co.uk/ | |
| TPER | | I: Italy | ??? | | Transporto Passeggeri Emilia-Romagna | | | |
| TPERTH | | AUS: Australia | C: City traffic | Perth | Transperth | | | |
| TPF | | CH: Switzerland | C: City traffic | Friburg | Transports publics Fribourgeois | | https://en.wikipedia.org/wiki/Transports_publics_Fribourgeois | |
| TPILET | | UA: Ukraine | C: City traffic | Ternopil | Ternpilelektrotrans | | | |
| TPLODZ | | PL: Poland | B: Bus | Lodz | Tramwaje Podmiejskie | | | |
| TPN | | CH: Switzerland | C: City traffic | | Transports Publics Neuchâtelois | | | |
| TPP | | I: Italy | R: Railway | | Tranvia Pinerolo-Perosa Argentina | | it.wikipedia.org/wiki/Tranvia_Pinerolo-Perosa_Argentina | |
| TPRL | tl | CH: Switzerland | C: City traffic | Lausanne | Transports publics de la région lausannoise | | | |
| TPW | | USA: United States of America | R: Railway | | Toledo, Peoria & Western Railroad | | | |
| TPX | | ??? | Z: Scale | | TransPng other | | | |
| TR | | AUS: Australia | R: Railway | | National Rail Corporation - TrailerRail | | | |
| TRA | | RC: Taiwan | ??? | | | | | |
| TRABANT | | D: Germany | T: Type of car, lorry | | Trabant | | | |
| TRACKLESS | | US-NJ: USA, New Jersey | B: Bus | | Trackless Transit | | | |
| TRADB | | D: Germany | V: Museum | | Traditionsbus Berlin | | | |
| TRAIL | | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | Transrail Freight | | https://en.wikipedia.org/wiki/Transrail_Freight | |
| TRAIN | | EU: European Union | P: Pool (Leasing / wagon pool) | | Train Rental International | | | |
| TRANSCO | | FAN: Fantasy | R: Railway | | TransCo | | | |
| TRANSGOR | | PL: Poland | B: Bus | | Transgór Spółka Akcyjna – przedsiębiorstwo transportowe z Mysłowic | | | |
| TRANSKOM | | PL: Poland | B: Bus | Piekary Śląskie | Transkom s.j. | | | |
| TRANSLUB | | PL: Poland | B: Bus | | Przedsiębiorstwo Transportowe Translub sp. z o.o. | | | |
| TRANSLUD | | PL: Poland | B: Bus | | TRANSLUD Przewozy Autokarowe Jan Domosławski | | https://translud.pl/ | |
| TRANSMAC | | ??? | C: City traffic | | Transportes Urbanos de Macau | | | |
| TRANSN | | CH: Switzerland | RT: Regional transport company | | Transports Publics Neuchâtelois | | https://de.wikipedia.org/wiki/Transports_Publics_Neuch%C3%A2telois | |
| TRASK | TRA | SK: Slovakia | P: Pool (Leasing / wagon pool) | | TRATEC SK s.r.o | | | |
| TRAV | | ??? | A: Aviation | | Transavia | | | |
| TRC | | USA: United States of America | R: Railway | | Trona Railway | | https://de.wikipedia.org/wiki/Travys | |
| TRCR | TRC | RO: Romania | RO: Railway operator | | Tim Rail Cargo | | | |
| TRCX | | USA: United States of America | C: City traffic | | Tri-County Commuter Rail Authority | | | |
| TRD | | D: Germany | B: Bus | Dortmund | TRD-Reisen | | | |
| TRDR | TDR | D: Germany | R: Railway | | Trans Regio Deutsche Regionaleisenbahn | | www.trans-regio.de/ | |
| TRE | | USA: United States of America | R: Railway | | Trinity Railway Express | | | |
| TREB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Trent Barton | | https://en.wikipedia.org/wiki/Trentbarton | |
| TRET | | I: Italy | RT: Regional transport company | Trient | Trentino Transporti | | https://it.wikipedia.org/wiki/Trentino_Trasporti | |
| TREVIS | | LT: Lithuania | B: Bus | Riga | UAB Transrevis | | https://lt.wikipedia.org/wiki/Transrevis | |
| TREW | | CDN: Canada | B: Bus | | Trentway-Wagar | | | |
| TREZ | | SK: Slovakia | N: Narrow gauge railway | | Trencianska Elektricka Zeleznica | | | |
| TRI | | USA: United States of America | B: Bus | | Triboro Coach | | | |
| TRIM | TRIMET | USA: United States of America | C: City traffic | | Tri-County Metropolitan Transportation District of Oregon | | trimet.org | |
| TRK | | TM: Turkmenistan | R: Railway | | | | | |
| TRL | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | | ~Sorin Oprisan | | |
| TRLL | TRL | F: France | C: City traffic | Lorient | | | | |
| TRLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Texas Railcar Leasing Co. | | | |
| TRN | | CH: Switzerland | RT: Regional transport company | | Transports Régionaux Neuchâtelois | | https://de.wikipedia.org/wiki/Transports_R%C3%A9gionaux_Neuch%C3%A2telois | |
| TRNZ | | NZ: New Zealand | R: Railway | | Tranz Rail | | | |
| TROCK | TOR | USA: United States of America | C: City traffic | | Transport of Rockland | | https://en.wikipedia.org/wiki/Transport_of_Rockland | |
| TRON | | N: Norway | C: City traffic | | | | | |
| TROX | | USA: United States of America | I: Industry (user) | | Transcontinental Oil Co. | | | |
| TRRA | | USA: United States of America | R: Railway | | Terminal Railroad Association of St. Louis | | | |
| TRT | | PRC: China | C: City traffic | | Tianjin Rail Transit Group Co. | | https://en.wikipedia.org/wiki/Tianjin_Metro | |
| TRTB | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | Tees-side Railless Traction Board | | | |
| TRTC | | RC: Taiwan | C: City traffic | Taipei | | | | |
| TRTR | | I: Italy | C: City traffic | | Trieste Transporti | | | |
| TRUAX | | USA: United States of America | I: Industry (user) | | Truax-Traer Coal Co. | | | |
| TRUST | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Trustline | | http://en.wikipedia.org/wiki/Trustline | |
| TRVF | | S: Sweden | RO: Railway operator | | Trafikverket | | | |
| TRVY | TVYS | CH: Switzerland | R: Railway | | Transports Vallée de Joux, Yverdon-les-Bains, Ste-Croix | | travys.ch | |
| TRWAG | | CDN: Canada | B: Bus | | Trentway-Wagar | | | |
| TRWM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Travel West Midlands | | | |
| TRX | | DK: Denmark | P: Pool (Leasing / wagon pool) | | TraXion | 2001 - 2002 | | |
| TS | | E: Spain | R: Railway | | Torralba Soria | | | |
| TSA | TS | USA: United States of America | R: Railway | | Tidewater Southern Railway Company | | | |
| TSB | | D: Germany | R: Railway | | Taunusbahn | | | |
| TSD | | D: Germany | R: Railway | | Transport-Schienen-Dienst GmbH | | | |
| TSE | | USA: United States of America | R: Railway | | Texas Southeastern Railway | | | |
| TSEA | TSE | MAL: Malaysia | A: Aviation | | Transmile Air Services | | https://en.wikipedia.org/wiki/Raya_Airways | |
| TSF | | USA: United States of America | R: Railway | | Tuolumne & Sierra Foothill Railroad | | | |
| TSH | | USA: United States of America | R: Railway | | Tshiuetin Rail Transportation, Inc. | | | |
| TSJM | | RUS: Russia | C: City traffic | Tsjerjomuski | | | | |
| TSO | | F: France | M: Industry (railway maintenance) | | Travaux de Sud-Ouest | | | |
| TSOA | TSO | RUS: Russia | A: Aviation | | Transaero | | https://en.wikipedia.org/wiki/Transaero | |
| TSOL | | CH: Switzerland | C: City traffic | Lausanne | | | | |
| TSOSA | | PL: Poland | F: Industry (manufacturer) | | Tabor Szynowy Opole SA | | | |
| TSR | | USA: United States of America | R: Railway | | Texas State Railroad | | | |
| TSRR | | USA: United States of America | R: Railway | | Tennessee Southern R.R. Co., Inc. | | | |
| TSSA | | PL: Poland | C: City traffic | Chorzow | Tramwaje Slaskie S.A. | | | |
| TSSRL | | I: Italy | M: Industry (railway maintenance) | | Technical Services S.r.l. | | | |
| TSU | | USA: United States of America | R: Railway | | Tulsa-Sapulpa Union | | | |
| TSUG | | J: Japan | R: Railway | | Tsugaru Railway | | | |
| TSZCZ | | PL: Poland | C: City traffic | Szczecin | Tramwaje Szczecińskie | | https://en.wikipedia.org/wiki/Tramwaje_Szczeci%C5%84skie | |
| TT | | TOY: Toy, model | TOY: Toy, modell | | TT modell railway | | | |
| TTC | | NL: Netherlands | P: Pool (Leasing / wagon pool) | | The Train Company (RailInsight B.V.) | | | |
| TTCM | | USA: United States of America | C: City traffic | Milwaukee | The Transport Company (Milwaukee) | | | |
| TTI | | USA: United States of America | R: Railway | | Transkentucky Transportation | | | |
| TTL | TT | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Thames Trains Ltd. | 1999: 581km standard gauge, not electrified | | |
| TTPC | | CDN: Canada | C: City traffic | | Toronto Transportation Commission | | | |
| TTR | | I: Italy | R: Railway | | TTR: Tramvia Torino Rivoli | | | |
| TTRC | TTC | CDN: Canada | C: City traffic | | Toronto Transit Comission | | | |
| TTRV | | BG: Bulgaria | B: Bus | Varna | Transtriumph Holding | | | |
| TTSPA | | I: Italy | R: Railway | | Trentino Transporti | | | |
| TTT | | S: Sweden | R: Railway | | Three T AB | 2001 - | | |
| TTTK | | EST: Estonia | C: City traffic | Tallin | Tallina Trammi- ja Trollibussikoondise AS | | http://www.tttk.ee/ | |
| TTVJ | | DK: Denmark | V: Museum | | Tinglev-Tonder Veteran Jernbane | | | |
| TTX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | | | | |
| TUA | | TM: Turkmenistan | A: Aviation | | Turkmenistan Airlines | | https://en.wikipedia.org/wiki/Turkmenistan_Airlines | |
| TUAG | | CH: Switzerland | M: Industry (railway maintenance) | | MARTI AG Tunnelbau | | | |
| TUB | | F: France | B: Bus | Saint Brieuc | Transports urbains briochins | | https://fr.wikipedia.org/wiki/Transports_urbains_briochins | |
| TUI | TUI, X3 | D: Germany | A: Aviation | | TUIfly | | | |
| TULED | | F: France | B: Bus | | Transports Urbans Lédoniens | | | |
| TULGE | | RUS: Russia | C: City traffic | Tula | MKP Tulgorelektrotrans | | | |
| TUMEN | | RUS: Russia | B: Bus | Tumen | PATP1 Tumen | | | |
| TUREK | | PL: Poland | B: Bus | | PKS Turek | | | |
| TUS | | E: Spain | C: City traffic | Santander | Transportes Urbanos Santander | | | |
| TUSSAM | | E: Spain | C: City traffic | Sevilla | Transportes Urbanos de Sevilla, Sociedad Anónima Municipal | | https://es.wikipedia.org/wiki/TUSSAM | |
| TUX | | TN: Tunisia | A: Aviation | | Tunisair Express | | https://en.wikipedia.org/wiki/Tunisair_Express | |
| TUZI | | I: Italy | M: Industry (railway maintenance) | | Impresa Tuzi Construzioni | | | |
| TV | | H: Hungary | B: Bus | | Tisza Volán | | | |
| TVF | | FAN: Fantasy | RO: Railway operator | | TVF | | | |
| TVT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Thames Valley Training | | | |
| TWA | | USA: United States of America | A: Aviation | | Trans World Airlines | | | |
| TWAG | | S: Sweden | P: Pool (Leasing / wagon pool) | | Transwaggon | | | |
| TWAR | | PL: Poland | C: City traffic | | Tramwaje Warszawskie Sp. z o. o. | | https://pl.wikipedia.org/wiki/Tramwaje_Warszawskie | |
| TWAY | | USA: United States of America | B: Bus | | Trailways | Trailways is a membership-based marketing organization comprised of privately owned and operated transportation companies | | |
| TWB | | ROK: Korea | A: Aviation | | T'Way Airlines | | | |
| TWE | | D: Germany | R: Railway | | Teutoburger Wald-Eisenbahn | | www.twe-connex.de/ | |
| TWER | | UA: Ukraine | C: City traffic | Twer | | | | |
| TWH | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Travel with Hunny | | | |
| TWMID | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | Birmingham | Travel West Midlands | | | |
| TWR | | J: Japan | R: Railway | Tokyo | Tokyo Waterfront Area Rapid Transit | Rinkai Line. Third-sector railway in Tokyo, Japan, connecting Tokyo to the artificial islands of Aomi and Odaiba in Tokyo Bay. | | |
| TWVO | | USA: United States of America | R: Railway | | Toledo, Walhonding Valley & Ohio RR | | | |
| TXL | | D: Germany | RO: Railway operator | | TX Logistik AG | | | |
| TXOR | | USA: United States of America | R: Railway | | Texas and Oklahoma R.R. Co. | | | |
| TYCHY | | PL: Poland | C: City traffic | | Przedsiębiorstwa Komunikacji Miejskiej w Tychach | | | |
| TZAF | | EAT: Tanzania | Y: Military | | Tanzanian Air Force | | | |
| UA | | USA: United States of America | A: Aviation | | United Airlines | | | |
| UABP | | LT: Lithuania | C: City traffic | Panevezys | UAB Panevezio autobusu parkas | | | |
| UAE | | UAE: United Arab Emirates | A: Aviation | | Emirates | | | |
| UAEA | | UAE: United Arab Emirates | Y: Military | | United Aram Emirates Army | | | |
| UBB | | D: Germany | R: Railway | | Usedomer Bäder-Bahn | | www.ubb-online.com/ | |
| UBROS | | USA: United States of America | B: Bus | | United Brothers | | | |
| UDA | | EAT: Tanzania | C: City traffic | | Usafiri Dar es Salaam | | | |
| UDTR | | J: Japan | T: Type of car, lorry | | UD Trucks | Formerly Nissan Diesel Motor Co, now owned by Volvo. | | |
| UEBB | | CH: Switzerland | R: Railway | | Uerikon-Bauma-Bahn | | | |
| UEE | | D: Germany | R: Railway | | Uetersener Eisenbahn | | | |
| UEFER | | RA: Argentina | R: Railway | | Unidad Ejecutora Ferroviaria de la Provincia de Entre Rios | | | |
| UELZ | | D: Germany | C: City traffic | | Stadtwerke Uelzen | | | |
| UES | | D: Germany | C: City traffic | Hannover | Üstra | | | |
| UETAK | | J: Japan | R: Railway | | UeTakeshi Railway | | https://ja.wikipedia.org/wiki/%E4%B8%8A%E6%AD%A6%E9%89%84%E9%81%93 | |
| UF | | USA: United States of America | R: Railway | | Union Freight | | | |
| UFA | | RUS: Russia | B: Bus | | PATP1 Ufa | | | |
| UFT | | RO: Romania | R: Railway | | UniferTrans | | | |
| UIA | | RC: Taiwan | A: Aviation | | Uni Air | | https://en.wikipedia.org/wiki/Uni_Air | |
| ULM | SWU | D: Germany | C: City traffic | Ulm | Stadtwerke Ulm | | | |
| ULT | | S: Sweden | R: Railway | | UppTaget - Upplands Läns Trafik AB | | | |
| UMOVE | | DK: Denmark | B: Bus | | Umove a/s | | https://www.umove.dk/ | |
| UMP | | USA: United States of America | R: Railway | | Upper Merion and Plymouth R.R. Co. | | | |
| UNACOP | | SR: Serbia | B: Bus | Beograd | Unacop d.o.o. | | | |
| UNI | | I: Italy | M: Industry (railway maintenance) | | UNIFERR Srl. | | clfspa.it | |
| UNIB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | University Bus | | | |
| UNIDO | | CZ: Czech Republic | RO: Railway operator | | Unipetrol Doprava a.s. | | | |
| UNIWORLD | | USA: United States of America | TB: Tourist agency | | Uniworld Tours Inc. | | | |
| UNPX | | USA: United States of America | I: Industry (user) | | Procor Ltd. | | | |
| UO | | USA: United States of America | R: Railway | | Union Railroad of Oregon | | | |
| UP | | USA: United States of America | R: Railway | | Union Pacific | | | |
| UPPS | | S: Sweden | C: City traffic | | Uppsala Bus AB | | | |
| UPS | | ??? | ??? | | United Parcel Services | | | |
| UPX | | CDN: Canada | R: Railway | Toronto | Union Pearson Express | Airport access | | |
| URHS | | USA: United States of America | V: Museum | | United Railroad Historical Society of New Jersey | | | |
| URR | | USA: United States of America | R: Railway | | Union R.R. Co. (Pittsburgh, PA) | | | |
| URTC | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Union Refrigerator Transit Lines | a Division of the General American Transportation Corp. | | |
| USA | | USA: United States of America | Y: Military | | US Army | | | |
| USAAF | | USA: United States of America | Y: Military | | United States Army Air Forces | | https://en.wikipedia.org/wiki/United_States_Army_Air_Forces | |
| USAF | | USA: United States of America | Y: Military | | US Air Force | | | |
| USAW | USA, US | USA: United States of America | A: Aviation | | US Airways | | | |
| USAX | | USA: United States of America | O: Organisation | | United States Army | | | |
| USCG | | USA: United States of America | O: Organisation | | United States Coast Guard | | | |
| USMC | | USA: United States of America | Y: Military | | United States Marine Corps | | | |
| USN | | USA: United States of America | Y: Military | | United States Navy | | | |
| USNX | | USA: United States of America | O: Organisation | | United States Navy | | | |
| USPF | | USA: United States of America | I: Industry (user) | | United States Pipe & Foundry Corporation | | | |
| USR | | USA: United States of America | R: Railway | | Utah Southern Railway Co. | | | |
| USS | | USA: United States of America | Y: Military | | United states (of america) Navy | | | |
| USSX | | USA: United States of America | I: Industry (user) | | U.S.Steel Co. | | | |
| USTC | | USA: United States of America | Y: Military | | United States of America Transport Corps | | | |
| UTA | | USA: United States of America | C: City traffic | Salt Lake City | Utah Transport Authority | | | |
| UTAH | | USA: United States of America | R: Railway | | Utah Railway Company | | | |
| UTCX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Union Tank Car Co. | | | |
| UTIL | | USA: United States of America | C: City traffic | | Utility Lines | | | |
| UTLX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Union Tank Car Co. | | | |
| UTR | | NL: Netherlands | C: City traffic | Utrecht | | | | |
| UTZ | | RO: Romania | R: Railway | | Unicom Tranzit | | | |
| UVKV | | H: Hungary | C: City traffic | Újvidék (Novi Sad) | | | | |
| UWAG | | D: Germany | C: City traffic | Vilnius | Überlandwerke Fulda AG | | | |
| UWAJIMA | | J: Japan | C: City traffic | | Uwajima Bus | | | |
| UZ | | UA: Ukraine | R: Railway | | Ukrainski Zaliznici | | | |
| UZB | | UZ: Uzbekistan | R: Railway | | O'zbekiston Temir Yo'llari | | | |
| UZBA | UZB | UZ: Uzbekistan | A: Aviation | | Uzbekistan Havo Yullary (Uzbekistan Airways) | | | |
| VAD | | NL: Netherlands | B: Bus | | Verenigde Autobus Diensten VAD | | | |
| VAF | | I: Italy | M: Industry (railway maintenance) | | Valsecchi Armamento Ferroviario Srl | | http://www.valsecchiarmamentoferroviario.com/ | |
| VAFCO | | I: Italy | M: Industry (railway maintenance) | | Valsecchi Armamento Ferroviario | | | |
| VAGJ | VaGJ | DK: Denmark | R: Railway | | Varde - Grindsted Jernbane | 191 - 1972 | | |
| VALD | | I: Italy | M: Industry (railway maintenance) | | Valditerra Lavori Ferroviari S.p.A. | | http://www.valditerra.com | |
| VALE | | BR: Brazil | I: Industry (user) | | Vale SA. | Mining company | | |
| VALM | | USA: United States of America | C: City traffic | Phoenix AZ | Valley Metro | | | |
| VAMD | | USA: United States of America | R: Railway | | The Virginia & Maryland Railroad | | | |
| VANC | | CDN: Canada | C: City traffic | Vancouver | | | | |
| VANDERHOOF | | USA: United States of America | B: Bus | | Vanderhoof | | | |
| VANOMAG | | CH: Switzerland | M: Industry (railway maintenance) | | | | | |
| VANTH | | CH: Switzerland | M: Industry (railway maintenance) | | Vanoli AG Thalwil | | | |
| VARIG | | BR: Brazil | A: Aviation | | Varig | | | |
| VARNA | | BG: Bulgaria | C: City traffic | Varna | Градски Транспорт - Варна | | | |
| VAS | | H: Hungary | B: Bus | | Vasi Volán | | | |
| VASC | | E: Spain | R: Railway | | Ferrocarriles Vascos | | | |
| VAST | | S: Sweden | OA: Authority organizing city and regional transport | | Västtrafik AB | | https://de.wikipedia.org/wiki/V%C3%A4sttrafik | |
| VB | | H: Hungary | B: Bus | | Volánbusz | | | |
| VBD | | DDR: German Democratic Republic | C: City traffic | | Verkehrsbetriebe Dresden | | | |
| VBDA | VBD | CH: Switzerland | B: Bus | Davos | Verkehrsbetrieb der Landschaft Davos | | https://de.wikipedia.org/wiki/Verkehrsbetrieb_der_Landschaft_Davos | |
| VBE | | D: Germany | R: Railway | | ? (Verein Landeseisenbahn Lippe) | | | |
| VBG | | CH: Switzerland | C: City traffic | | VBG Verkehrsbetriebe Glattal AG | | | |
| VBGH | VBG | D: Germany | C: City traffic | Bremerhaven | Verkehrsgesellschaft Bremerhaven AG | | https://de.wikipedia.org/wiki/BremerhavenBus | |
| VBH | | D: Germany | C: City traffic | Hamm | Verkehrsbetrieb Stadtwerke Hamm GmbH | | | |
| VBHA | VBH | DDR: German Democratic Republic | C: City traffic | Halle | Verkehrsbetriebe Halle | | | |
| VBHE | VBH | CH: Switzerland | C: City traffic | | Verkehrsbetriebe Herisau | | | |
| VBK | | D: Germany | C: City traffic | Karlsruhe | Verkehrsbetriebe Karlsruhe | | | |
| VBL | | D: Germany | C: City traffic | Ludwigshafen | Verkehrsbetriebe Ludwigshafen | | | |
| VBLZ | VBL | CH: Switzerland | C: City traffic | Luzern | Verkehrsbetriebe Luzern | | | |
| VBOAG | | PL: Poland | C: City traffic | | Verkehrsbetriebe Oberschlesien AG | | | |
| VBPOD | | PL: Poland | B: Bus | | Veolia Transport Bielsk Podlaski, sp. z o.o. | | | |
| VBSG | | CH: Switzerland | C: City traffic | St. Gallen | Verkehrsbetriebe St. Gallen | | | |
| VBSH | | CH: Switzerland | C: City traffic | Schaffhausen | Verkehrsbetriebe Schaffhausen | | | |
| VBUS | | PL: Poland | B: Bus | Żory | V-Bus | | | |
| VBZ | | CH: Switzerland | C: City traffic | Zürich | | | | |
| VBZD | VBZ | DDR: German Democratic Republic | C: City traffic | Zwickau | Verkehrsbetriebe Zwickau | | | |
| VC | | USA: United States of America | R: Railway | | Virginia Central Railway | | | |
| VCRR | | USA: United States of America | V: Museum | | Verde Canyon Railway | | | |
| VCY | | USA: United States of America | R: Railway | | Ventura County Railway | | | |
| VDA | | RUS: Russia | A: Aviation | | Volga-Dnepr Airlines | | | |
| VDL | | NL: Netherlands | T: Type of car, lorry | | VDL Bus & Coach | | | |
| VEAF | | YV: Venezuela | Y: Military | | Venezuelan National Bolivarian Military Aviation | | | |
| VEB | | D: Germany | R: Railway | | Vulkan-Eifel-Bahn | | www.veb.de | |
| VEC | | D: Germany | R: Railway | | Vectus Verkehrsgesellschaft | Since December 2004 this new company, a subsidiary of HLB and WEBA, operates passenger trains on the Westerwald lines Limburg-Siershahn, Limburg-Au(Sieg), Limburg-Niedernhausen-Wiesbaden and Limburg-Koblenz. | www.vectus-online.de/ | |
| VECH | | F: France | M: Industry (railway maintenance) | | R. Vecchietti | | | |
| VECK | | L: Luxembourg | B: Bus | | Voyages Ecker s.a r.l. | | | |
| VEF | | A: Austria | V: Museum | | Verein Eisenbahnfreunde | | | |
| VEGLA | | D: Germany | I: Industry (user) | | Vegla Glass factory | | | |
| VEN | | D: Germany | R: Railway | | Rhenus Veniro GmbH | | | |
| VEO | | F: France | R: Railway | | Veolia (Connex France) | | | |
| VEOBI | | PL: Poland | B: Bus | Sanok | Veolia Transport Bieszczady Sp. z o.o. | | | |
| VEOBIESZ | | PL: Poland | B: Bus | | Veolia Transport Bieszczady | | | |
| VEOKOL | | PL: Poland | B: Bus | | Veolia Transport Kolobrzeg sp. z o.o. | | | |
| VEONR | | SK: Slovakia | B: Bus | | Veolia Nitra | | | |
| VEOPK | | PL: Poland | B: Bus | | Veolia Transport Podkarpacie Sp. z o.o. | | | |
| VEOSV | | S: Sweden | C: City traffic | | Veolia Transport Sverige AB | | | |
| VEOTCZ | | PL: Poland | B: Bus | | ZKM Veolia Transport Tczew | | | |
| VEOTEP | | CZ: Czech Republic | C: City traffic | Teplice | Veolia Transport Teplice | | | |
| VEOTOR | | PL: Poland | B: Bus | | Veolia Transport Torun sp.z.o.o. | | | |
| VEOVC | | CZ: Czech Republic | B: Bus | | Veolia Transport Východní Čechy. | | https://cs.wikipedia.org/wiki/Arriva_V%C3%BDchodn%C3%AD_%C4%8Cechy | |
| VEOW | | PL: Poland | C: City traffic | | Veolia Transport Warszawa | | | |
| VER | | D: Germany | B: Bus | Ennepetal | Verkehrsgesellschaft Ennepe-Ruhr mbH | | | |
| VERT | | H: Hungary | B: Bus | | Vértes Volán | | | |
| VEST | | D: Germany | C: City traffic | Vestische | | | | |
| VESZ | | H: Hungary | C: City traffic | Veszprém | | | | |
| VETR | | RO: Romania | R: Railway | | Vest Trans Rail | | | |
| VEV | | D: Germany | R: Railway | | Vorwohle - Emmertal Verkehrsbetriebe | | | |
| VGB | | D: Germany | B: Bus | Dortmund | Verkehrsgesellschaft Breitenbach | | | |
| VGBH | VGB | D: Germany | C: City traffic | Bremerhaven | Verkehrsgesellschaft Bremerhaven AG | | | |
| VGBREIT | | D: Germany | B: Bus | Hamm | Verkehrsgesellschaft Breitenbach mbH & Co. KG | | | |
| VGF | | D: Germany | C: City traffic | Frankfurt/M | | | | |
| VGG | | D: Germany | C: City traffic | Görlitz | | | | |
| VGJ | | DK: Denmark | R: Railway | | Vejle - Give Jernbane | 1894 - 1914 | | |
| VGN | | USA: United States of America | R: Railway | | Virginian Ry. | | | |
| VHB | | CH: Switzerland | R: Railway | | Vereinigte Huttwil-Bahnen / Hutwill United Railways | | | |
| VHH | | D: Germany | C: City traffic | Hamburg | Verkehrsbetriebe Hamburg-Holstein AG | | | |
| VHOOL | | B: Belgium | T: Type of car, lorry | | Van Hool | | | |
| VIA | | CDN: Canada | R: Railway | | VIA Rail Canada | | | |
| VIAM | | CZ: Czech Republic | M: Industry (railway maintenance) | | Viamont | | | |
| VIAMET | | US-TX: USA, Texas | C: City traffic | San Antonio | VIA Metropolitan Transit | | https://en.wikipedia.org/wiki/VIA_Metropolitan_Transit | |
| VIAS | | E: Spain | M: Industry (railway maintenance) | | | | | |
| VIASR | VIAS | D: Germany | R: Railway | | | Owned by Rurtalbahn and DSB. Service on the Odenwaldbahn and Rheingaulinie. | | |
| VIC | VR | AUS: Australia | R: Railway | | Victorian Railway | | | |
| VICT | | CDN: Canada | B: Bus | | Victoria Transit | | | |
| VICTA | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Victa Westlink Rail | | | |
| VIDA | | S: Sweden | I: Industry (user) | | VIDA AB - Sveriges största privatägda sågverksgrupp | D=Sägewerkbetreibergesellschaft | http://www.vida.se/ | |
| VIGRA | | PL: Poland | B: Bus | Kraków | Vigra Sp.z.o.o. | | | |
| VIKING | | CH: Switzerland | TB: Tourist agency | | Viking Cruises | | | |
| VILNA | | LT: Lithuania | C: City traffic | Vilnius | UAB Vilniaus Autobusai | | | |
| VILNT | | LT: Lithuania | C: City traffic | Vilnius | UAB Vilniaus Troleibusai | | | |
| VINN | | UA: Ukraine | C: City traffic | Vinnytsia | | | | |
| VIR | VT | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Virgin Trains Ltd. | 1999: 3733km standard gauge, electrified at 25kV 50Hz Virgin Trains is a train operating company in the United Kingdom. It is generally considered part of the Virgin Group, although the shareholding is actually split 51:49 between Virgin Group and Stagecoach Group. The company was formed to take advantage of the privatisation of British Rail in the mid 1990s. Virgin Trains were successful in the bids for two franchises, the first being to run express train services on the West Coast Main Line (WCML). This part of the company is called Virgin West Coast (VWC) and provides services from London Euston to the West Midlands, the North West and Scotland. The other franchise Virgin Trains obtained is called Virgin Cross-Country (VXC - see also Cross Country Route) and runs long distance services which by-pass London and link the south and south-west of England with the north of England and Scotland via Birmingham. Unlike most other train operating companies, Virgin operates the two franchises as a single brand, although legally and operationally, they are separate companies. | http://www.virgintrains.co.uk/ | |
| VIRA | VIR | GB: United Kingdom of Great Britain and Northern Ireland | A: Aviation | | Virgin Atlantic Airways | | | |
| VIRG | VGN | USA: United States of America | R: Railway | | Virginian Railway | | | |
| VIS | | D: Germany | T: Type of car, lorry | | Viseon Bus GmbH | | https://en.wikipedia.org/wiki/Viseon_Bus | |
| VITEBSK | | BY: Belarus | C: City traffic | Vitebsk | Vitebskoblavtotrans | | | |
| VJC | | VDR: Viet-Nam, Democratic Republic of | A: Aviation | | VietJet Air | | https://en.wikipedia.org/wiki/VietJet_Air | |
| VKL | | DDR: German Democratic Republic | C: City traffic | | Verkehrskombinat Leipzig | | | |
| VKP | | D: Germany | R: Railway | | Verkehrsbetribe Kreis Plön | | | |
| VKU | | D: Germany | B: Bus | Unna | Verkehrsgesellschaft Kreis Unna mbH | | | |
| VL | | AUS: Australia | R: Railway | | V/Line | | | |
| VLA | VL | DK: Denmark | R: Railway | | Vestsjallands Lokalbaner A/S | | | |
| VLAB | | S: Sweden | B: Bus | | Vänersborgs Linjetrafik AB | | | |
| VLI | | BR: Brazil | R: Railway | | Valor da Logística Integrada Multimodal S.A. | 2003 - 2009 | | |
| VLK | | RUS: Russia | A: Aviation | | Vladivostok Air | | | |
| VLP | | AUS: Australia | R: Railway | | V/Line Passenger Corporation | | | |
| VLPH | VLP | D: Germany | B: Bus | | Verkehrsgesellschaft Ludwigslust-Parchim mbH | | https://www.vlp-lup.de | |
| VLT | | S: Sweden | R: Railway | | Västmanlands Lokaltrafik | | | |
| VLTJ | | DK: Denmark | R: Railway | | Vemb - Lemvig - Thyborøn Jernbane (Lemvigbanen) | 1879 - 2008 | www.lemvigbanen.dk/ | |
| VM | | USA: United States of America | R: Railway | | Virginia & Maryland | | | |
| VMCV | | CH: Switzerland | C: City traffic | Montreux | Transports publics Vevey-Montreux-Chillon-Villeneuve | | | |
| VMD | | D: Germany | V: Museum | | Verkehrsmuseum Dresden | | | |
| VMET | | RO: Romania | I: Industry (user) | | Viromet S.A. | | viromet.ro | |
| VMRPTA | | USA: United States of America | C: City traffic | Phoenix AZ | Valley Metro Regional Public Transportation Authority | | | |
| VNJ | | DK: Denmark | R: Railway | | Varde - Nørre Nebel Jernbane (Vestbanen) | 1903 - | www.vestbanen.dk/ | |
| VNL | | J: Japan | A: Aviation | | Vanilla Air | | | |
| VNOR | | USA: United States of America | R: Railway | | Vermont Northern Railroad Co. | | | |
| VNR | | VN: Vietnam | R: Railway | | Vietnam Railways | | http://www.vr.com.vn/trang-chu.html | |
| VO | | DK: Denmark | R: Railway | | Vodskov - Østervrå | 1924 - 1950 | | |
| VOE | | E: Spain | A: Aviation | | Volotea | | https://en.wikipedia.org/wiki/Volotea | |
| VOGT | VLB | D: Germany | R: Railway | | Vogtlandbahn GmbH | | www.vogtlandbahn.de/ | |
| VOITH | | D: Germany | F: Industry (manufacturer) | | | | | |
| VOLG | | RUS: Russia | C: City traffic | Volgograd | | | | |
| VOLVO | | S: Sweden | T: Type of car, lorry | | Volvo | | | |
| VOS | | NL: Netherlands | ??? | | Vos Logistics | | http://www.voslogistics.com/ | |
| VOST | | NL: Netherlands | ??? | | Volker Stevin | | | |
| VOYC | | CDN: Canada | B: Bus | | Voyageur Colonial Bus Lines | | | |
| VPA | | CH: Switzerland | V: Museum | | Verein Pacific 01202 | | | |
| VPAF | | VN: Vietnam | Y: Military | | Vietnam People's Air Force | | https://en.wikipedia.org/wiki/Vietnam_People%27s_Air_Force | |
| VPL | | I: Italy | R: Railway | | Varese - Ponte Tresa - Lugano | | | |
| VPS | | D: Germany | R: Railway | | Verkehrsbetriebe Peine-Salzgitter GmbH | This company connects different freight stations around Salzgitter with the DB stations Ilsenburg, Peine, Salzgitter-Beddingen and Salzgitter-Voßpaß. It actually consists of two separated companies: Peiner Eisenbahn and Salzgitter Eisenbahn. Website: http://www.vps-b | www.vps-bahn.de/ | |
| VR | | FIN: Finland | R: Railway | | | | | |
| VREX | | USA: United States of America | C: City traffic | | Virginia Railway Express | | | |
| VRR | | NL: Netherlands | RO: Railway operator | | Volker Rail | | volkerrail.nl | |
| VRSV | | S: Sweden | B: Bus | | VR Sverige AB | | | |
| VRT | | D: Germany | TA: Transport and Tariff Association | | Verkehrsverbund Region Trier | Common livery of vehicles of the contracting partners | https://de.wikipedia.org/wiki/Verkehrsverbund_Region_Trier | |
| VRTB | | USA: United States of America | B: Bus | | Vermont Transit | | | |
| VSFT | | D: Germany | ??? | | Vossloh Schienenfahrzeugtechnik GmbH | | | |
| VSM | | NL: Netherlands | ??? | | Veluwse Stoomtrein Maatschappij | | | |
| VSO | | USA: United States of America | R: Railway | | Valdosta Southern Railroad | | | |
| VSOE | | GB: United Kingdom of Great Britain and Northern Ireland | TB: Tourist agency | | Belmond Management Limited | | | |
| VT | | H: Hungary | B: Bus | | Vt Transman | | | |
| VTA | | USA: United States of America | C: City traffic | San Jose | Santa Clara Valley Transportation Authority | | | |
| VTG | | D: Germany | P: Pool (Leasing / wagon pool) | | VTG | | | |
| VTL | | I: Italy | R: Railway | | Villanova Transporti & Logistica | | | |
| VTM | | MEX: Mexico | A: Aviation | | Aeronaves TSM | | https://en.wikipedia.org/wiki/Aeronaves_TSM | |
| VTR | | USA: United States of America | R: Railway | | Vermont Railway | | | |
| VTRA | | RO: Romania | R: Railway | | Vest Trans Rail | | | |
| VTRR | V&T | USA: United States of America | R: Railway | | Virginia & Truckee Ry. | | | |
| VTS | | RO: Romania | R: Railway | | Via Terra Spedition | | | |
| VTUVAL | | LV: Latvia | B: Bus | | SIA VTU Valmiera | | | |
| VU | | D: Germany | B: Bus | | Verkehrsgesellschaft Untermain GmbH | | | |
| VVGJ | | DK: Denmark | R: Railway | | Vejle - Vandel - Grindsted Jernbane (Vandelbanen) | 1897 - 1957 | | |
| VVS | | SU: Sovietunion | Y: Military | | Voyenno-Vozdushnye Sily | | https://en.wikipedia.org/wiki/Soviet_Air_Forces | |
| VVSB | VVS | D: Germany | C: City traffic | Saarbrücken | Versorgungs- und Verkehrsgesellschaft Saarbrücken mbH | | | |
| VVT | | CH: Switzerland | R: Railway | | ? (Val de Travers) | | | |
| VVTA | | US-CA: USA, California | B: Bus | Victorville | Victor Valley Transit Authority | | | |
| VW | | D: Germany | T: Type of car, lorry | | Volkswagen | | | |
| VWG | | D: Germany | C: City traffic | Oldenburg | Verkehr und Wasser GmbH | | https://de.wikipedia.org/wiki/Verkehr_und_Wasser | |
| VWS | | D: Germany | C: City traffic | Siegen | Verkehrsbetriebe Westfalen-Süd AG Siegen | | | |
| VY | | N: Norway | RO: Railway operator | | Vygruppen AS | | | |
| VZLU | | CS: Czechslowakia | O: Organisation | | Výzkumný a zkušební letecký ústav | | https://de.wikipedia.org/wiki/V%C3%BDzkumn%C3%BD_a_zku%C5%A1ebn%C3%AD_leteck%C3%BD_%C3%BAstav | |
| VZO | | CH: Switzerland | B: Bus | | Verkehrsbetriebe Zürichsee und Oberland | | https://de.wikipedia.org/wiki/Verkehrsbetriebe_Z%C3%BCrichsee_und_Oberland | |
| WA | | USA: United States of America | R: Railway | | The Western Railway of Alabama | | | |
| WAB | | CH: Switzerland | R: Railway | | Wengernalpbahn | | | |
| WABD | WAB | D: Germany | R: Railway | | Westfälische Almetalbahn | | | |
| WABR | WAB | USA: United States of America | R: Railway | | Wabash Railroad | | | |
| WADE | | USA: United States of America | TB: Tourist agency | | Wade Tours | | | |
| WAG | | USA: United States of America | R: Railway | | Wellsville, Addison and Galeton Railroad | | | |
| WAGN | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | West Anglia Great Northern Railway Ltd. | | | |
| WAGR | | AUS: Australia | R: Railway | | Westrail | | | |
| WAIBEL | | D: Germany | B: Bus | | Waibel Bus GmbH | | https://www.silbernagl.it/ueber-uns | |
| WAIN | | FAN: Fantasy | X: Phantasy | | Wain Railway | | | |
| WAJ | | J: Japan | A: Aviation | | Air Asia Japan | | https://en.wikipedia.org/wiki/AirAsia_Japan | |
| WAK | | J: Japan | R: Railway | | Wakayama Electric Railway | | | |
| WAKAS | | J: Japan | B: Bus | | Wakasugi Kanko Bus Co. | | | |
| WAKS | | J: Japan | R: Railway | | Wakasa Railway | | | |
| WALB | | PL: Poland | C: City traffic | Wałbrzych | MPK Wałbrzych | | | |
| WALSC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Walsall Corporation | | | |
| WAMX | | USA: United States of America | R: Railway | | Webb Asset Management | | | |
| WAN | | D: Germany | N: Narrow gauge railway | | Inselbahn Wangerooge | | | |
| WANDT | | D: Germany | S: Street transport company | | Wandt Transport | | | |
| WAR | MZK | PL: Poland | C: City traffic | Warszawa | Miejskie Zakłady Komunikacyjne w Warszawie | 1964 - 1994 | https://pl.wikipedia.org/wiki/Miejskie_Zak%C5%82ady_Komunikacyjne_w_Warszawie | |
| WARBUS | | PL: Poland | B: Bus | Warszawa | Warbus sp. z o.o | | | |
| WARTBURG | | D: Germany | T: Type of car, lorry | | Wartburg | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| WARW | | USA: United States of America | B: Bus | | Warwick Stages | | | |
| WAS | | PL: Poland | O: Organisation | | Warsaw Airport Services Ltd. | | | |
| WASC | | D: Germany | P: Pool (Leasing / wagon pool) | | Wascosa | | | |
| WASHS | | USA: United States of America | B: Bus | | Washington Street IBOA | | | |
| WATA | | J: Japan | R: Railway | | Watarase Keikoku Railway | | http://en.wikipedia.org/wiki/Watarase_Keikoku_Railway_Watarase_Keikoku_Line | |
| WATC | | USA: United States of America | R: Railway | | Washington Terminal Company | | | |
| WATCHUNG | | USA: United States of America | C: City traffic | | Watchung Mountain Transit | | | |
| WATCO | | AUS: Australia | R: Railway | | Watco Australia | | | |
| WATZKE | | A: Austria | B: Bus | | Watzke GmbH | Teil der Dr. Richerd Firmengruppe | | |
| WAY | | PE: Peru | A: Aviation | | Wayraperú | | https://en.wikipedia.org/wiki/Wayraper%C3%BA | |
| WB | | CH: Switzerland | R: Railway | | Waldenburgerbahn | | | |
| WBC | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Wycombe Bus Company | | | |
| WBSW | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | White Bus Service of Windfield | | | |
| WBTC | | GB: United Kingdom of Great Britain and Northern Ireland | M: Industry (railway maintenance) | | Wabtec Rail Limited | | | |
| WBUS | WB | D: Germany | B: Bus | | Westfalen Bus GmbH | | | |
| WC | | USA: United States of America | R: Railway | | Wisconsin Central Limited | | | |
| WCB | | NL: Netherlands | P: Pool (Leasing / wagon pool) | | Wagon Care | | | |
| WCCL | | USA: United States of America | R: Railway | | Wisconsin Chicago Link Ltd. | | | |
| WCDOT | | USA: United States of America | B: Bus | | Westchester County DOT | | | |
| WCE | | CDN: Canada | C: City traffic | Vancouver | West Coast Express | | https://en.wikipedia.org/wiki/West_Coast_Express;https://www.translink.ca/en/About-Us/Corporate-Overview/Operating-Companies/WCE.aspx | |
| WCR | | AUS: Australia | R: Railway | | West Coast Railways | | | |
| WCRC | WCR | GB: United Kingdom of Great Britain and Northern Ireland | RO: Railway operator | | West Coast Railway Company Ltd | | | |
| WCRL | | USA: United States of America | R: Railway | | West Chester R.R. Co. | | | |
| WCRR | WRCR | USA: United States of America | R: Railway | | Washington Central R.R. Co., Inc. | | | |
| WD | | D: Germany | R: Railway | | Kleinbahn Wedenau - Deutz | | | |
| WDC | | US-DC: USA, District of Columbia | C: City traffic | Washington DC | Washington Metropolitan Area Transit Authority | | | |
| WE | | S: Sweden | R: Railway | | Woxna Express | 1994 - 1999 | | |
| WEAL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Wealden of London | | | |
| WEBA | | D: Germany | R: Railway | | WEBA: Westerwaldbahn GmbH | | www.westerwaldbahn.de/ | |
| WEE | | D: Germany | RO: Railway operator | | Weser Ems Eisenbahn GmbH | | | |
| WEG | | D: Germany | R: Railway | | Würtembergische Eisenbahn-Gesellschaft | | www.weg-connex.de/ | |
| WEG_S | | D: Germany | R: Railway | | WEG (Schönbuchbahn) | | | |
| WEG_T | | D: Germany | R: Railway | | WEG (Tälesbahn) | | | |
| WEI | | D: Germany | C: City traffic | Weimar | Verkehrsbetrieb Weimar GmbH | | | |
| WEM | | D: Germany | N: Narrow gauge railway | | Waldeisenbahn Muskau e.V. | | | |
| WEND | | D: Germany | R: Railway | | Wendelsteinbahn GmbH | | www.wendelsteinbahn.de/ | |
| WEPX | | USA: United States of America | I: Industry (user) | | Wisconsin Electric Power Co. | | | |
| WERG | | D: Germany | N: Narrow gauge railway | Löbau | Werners Gartenbahn | | | |
| WES | | D: Germany | R: Railway | | Bremen-Thedinghauser Eisenbahn GmbH (Weserbahn) | | www.weserbahn.de/ | |
| WESEL | | D: Germany | C: City traffic | Wesel | Kleinbahn Wesel-Rees-Emmerich | Betreiber:Rheinisch-Westfälische Straßen- und Kleinbahnen GmbH, eröffnet 1914, stillgelegt 1966 | | |
| WESG | | D: Germany | C: City traffic | Geilenkirchen | WestVerkehr Gmbh | | https://de.wikipedia.org/wiki/WestVerkehr | |
| WESTM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | London | Westminster Omnibus Company | | | |
| WESX | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Wessex Trains | Wessex Trains was the primary passenger rail operator in the South West of England. The company operated trains in the region bounded by Penzance, Cardiff, Gloucester, Worcester and Brighton. In addition to running trains, Wessex Trains was responsible for the operation of 125 passenger stations. Wessex Trains merged with First Great Western and First Great Western Link on 1 April 2006. The new franchise is operated by First Group and all its services operate under the name First Great Western. | | |
| WESXB | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Wessex Bus | | https://en.wikipedia.org/wiki/Wessex_Bus | |
| WEYT | | USA: United States of America | I: Industry (user) | | Weyerhaeuser Timber Co. | | | |
| WFAX | | USA: United States of America | R: Railway | | Western Fuels Association, Inc. | | | |
| WFB | | D: Germany | R: Railway | | Westfalenbahn | | | |
| WFBN | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Wells Fargo Bank Northwest | | | |
| WFE | | USA: United States of America | I: Industry (user) | | Western Fruit Company | | | |
| WFEX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Western Fruit Express Co. | | | |
| WFL | | D: Germany | RO: Railway operator | | Wedler & Franz Logistic Gmbh & co KG | | | |
| WFUR | | CH: Switzerland | S: Street transport company | | Welti-Furrer Transporte | | http://www.welti-furrer.ch/ | |
| WGCR | | USA: United States of America | R: Railway | | Wiregrass Central Railroad | | | |
| WGNS | | USA: United States of America | R: Railway | | Wisconsin Great Northern R.R., Inc. | | | |
| WH | | D: Germany | Y: Military | | Wehrmacht | | | |
| WHC | | AUS: Australia | I: Industry (user) | | Whitehaven Coal | | | |
| WHE | | D: Germany | R: Railway | | Wanne-Bochum-Herner Eisenbahn und Hafen GmbH | This company operates freight trains on Wanne Westhafen-Wanne Herzogstraße/Bochum Graetz. | www.whe.de/ | |
| WHER | | USA: United States of America | R: Railway | | Walking Horse & Eastern Railroad | | | |
| WHF | | D: Germany | I: Industry (user) | | Wald-Holz-Forst GbR, Scheibe-Alsbach | | | |
| WHITEB | | US-NJ: USA, New Jersey | B: Bus | | White Bus Company | | | |
| WHL | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Welwyn-Hatfield Line | | | |
| WHLW | | D: Germany | Y: Military | | Luftwaffe | | | |
| WHR | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Welsh Highland Railway | | | |
| WHUNT | | US-NJ: USA, New Jersey | B: Bus | | West Hunterdon Transit | | | |
| WI | | D: Germany | R: Railway | | Wieslauftalbahn | | | |
| WICHITA | | USA: United States of America | C: City traffic | Wichita KS | Wichita Transit | | | |
| WIEBE | | D: Germany | M: Industry (railway maintenance) | | | | | |
| WIEN | | A: Austria | C: City traffic | Wien | Wiener Linien | | | |
| WIF | | USA: United States of America | R: Railway | | West India Fruit & Steamship Co. | | | |
| WILBUS | | USA: United States of America | C: City traffic | Wilmette | Wilbus | | | |
| WILGA | | PL: Poland | B: Bus | Warszawa | Stowarzyszenie Przewoźników Drogowych Powiatu Otwockiego "Wilga Bus" | | | |
| WILLETTS | | USA: United States of America | TB: Tourist agency | | Willetts Tours | | | |
| WILLIAMS | | FAN: Fantasy | X: Phantasy | | Circus Williams | | | |
| WILLOW | | USA: United States of America | B: Bus | | Willow Bus | | | |
| WILM | | CH: Switzerland | C: City traffic | | Wilmobil AG | | | |
| WINC | | D: Germany | R: Railway | | Wincanton Rail | | | |
| WINDS | | CDN: Canada | B: Bus | | Windsor (Ontario) Transport | | | |
| WINDT | | CDN: Canada | B: Bus | | Transit Windsor | | | |
| WINI | | USA: United States of America | C: City traffic | Winnipeg | | | | |
| WINN | | UA: Ukraine | C: City traffic | | Vinnytsia | | | |
| WINP | | CDN: Canada | C: City traffic | Winnipeg | Winnipeg Transit | | | |
| WINT | | CH: Switzerland | C: City traffic | Winterthur | Stadtbus Winterthur | | | |
| WIRAZ | | PL: Poland | B: Bus | | Wiraż-Bus | | | |
| WIS | | D: Germany | R: Railway | | Wismut | | | |
| WJS | | USA: United States of America | R: Railway | | West Jersey and Seashore Railroad | | | |
| WKAG | | CH: Switzerland | I: Industry (user) | | Weiacher Kies AG | | weiacherkies.ch | |
| WKB | | D: Germany | R: Railway | | Wittlager Kreisbahn | | | |
| WKM | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | West Kent Motor Services | | | |
| WLB | | A: Austria | C: City traffic | Wien | Lokalbahn Wien-Baden | | | |
| WLC | | A: Austria | C: City traffic | | Wiener Lokalbahnen Cargo | | | |
| WLE | | D: Germany | R: Railway | | Westfälische Landeseisenbahn GmbH | | www.wle-online.de/ | |
| WLER | WE | USA: United States of America | R: Railway | | Wheeling & Lake Erie Railway Company | | | |
| WLL | | GB: United Kingdom of Great Britain and Northern Ireland | N: Narrow gauge railway | | Welshpool and Llanfair Light Railway | The Welshpool and Llanfair Light Railway is a 2' 6\" gauge line in rural Wales. It was conceived as a general carrier and passenger railway, but mainly carried agricultural produce from the local farms along the route from Llanfair Caereinion down to the mainline and canal at Welshpool, a distance of about 9 miles. The line opened in 1903, and was operated from the outset by the Cambrian Railways. It came into the GWR fold at the 1923 grouping. The passenger service was suspended in 1931 and the coaches later scrapped. The GWR rebuilt ("Swindonised") the locos as was their habit and supplied some more goods stock and the railway settled down into a bucolic existence serving the local farming community. It became part of British Railways and was finally closed in 1956. The railway was then taken over by a preservation society and since 1960 has progressively reopened from Llanfair. In the early 1980s, the railway once more reached the outskirts of Welshpool at Raven Square. | | |
| WLO | | USA: United States of America | R: Railway | | Waterloo Railway Company | | | |
| WLOC | | PL: Poland | C: City traffic | | Miejskie Przedsiębiorstwo Komunikacyjne we Włocławku | | https://pl.wikipedia.org/wiki/Miejskie_Przedsi%C4%99biorstwo_Komunikacyjne_we_W%C5%82oc%C5%82awku | |
| WLR | | USA: United States of America | R: Railway | | Wabush Lake Railway | | | |
| WLS | | D: Germany | M: Industry (railway maintenance) | | Waggon- und Lokreparaturservice GmbH | | | |
| WM | | CH: Switzerland | R: Railway | | BDWM Transport AG, Wohlen - Meisterschwanden | | http://www.bdwm.ch/ | |
| WMATA | | USA: United States of America | C: City traffic | | Washington Metropolitan Area Transit Authority | | | |
| WMCX | | USA: United States of America | I: Industry (user) | | Westmoreland Coal Company | | | |
| WMPTE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Birmingham | West Midlands Passenger Transport Executive | | | |
| WMR | WM | USA: United States of America | R: Railway | | Western Maryland Railway | | | |
| WMSR | | USA: United States of America | TU: Touristic railway | | Western Maryland Scenic Railroad | | | |
| WN | | USA: United States of America | R: Railway | | Wisconsin Northern | | | |
| WNB | | D: Germany | R: Railway | | Württembergische Nebenbahnen AG | | | |
| WNYP | | USA: United States of America | R: Railway | | Western New York & Pennsylvania | | | |
| WOCX | | USA: United States of America | I: Industry (user) | | Wadhams Oil Co. | | | |
| WOD | | USA: United States of America | R: Railway | | Washington and Old Dominion Railroad | | | |
| WOLF | | CH: Switzerland | S: Street transport company | Chur | Peter Wolf & Söhne | | | |
| WOLFS | | USA: United States of America | B: Bus | | Wolf's Bus | | | |
| WOOT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Woottens Luxury Travel | | | |
| WOT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Walton-on-Thames Motor Co. Ltd. | | | |
| WOTZER | | A: Austria | B: Bus | Grän | Wötzer Reisen | | https://www.das-tannheimertal.at/infrastruktur/graen/15-woetzer-reisen.html | |
| WOV | | USA: United States of America | R: Railway | | Warren & Ouachita Valley Ry. Co. | | | |
| WP | | USA: United States of America | R: Railway | | Western Pacific | | | |
| WPK | KZK GOP | PL: Poland | C: City traffic | Katowice | | | www.kzkgop.pl | |
| WPKGSG | | PL: Poland | C: City traffic | | WPK Gdansk-Sopot-Gdynia | | | |
| WPKSLU | | PL: Poland | C: City traffic | Słupsk | Wojewódzkie Przedsiębiorstwo Komunikacyjne w Słupsku | | | |
| WPPV | | US-NY: USA, New York | B: Bus | | White Plains & Pleasantville Bus Lines | | | |
| WPRR | | USA: United States of America | R: Railway | | Willamette & Pacific | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| WR | | AUS: Australia | R: Railway | | Westrail | | | |
| WRA | | USA: United States of America | R: Railway | | Western Railway of Alabama | | | |
| WRIX | | USA: United States of America | R: Railway | | Western Rail Inc. | | | |
| WRNX | | USA: United States of America | I: Industry (user) | | Warren Petroleum Corp. / Gulf Oil Products / Chevron USA | | | |
| WROC | | PL: Poland | C: City traffic | Wrocław | Miejskie Przedsiębiorstwo Komunikacyjne we Wrocławiu | | | |
| WROSE | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | Thorpe (Surrey) | White Rose | | | |
| WRR | WRRC | USA: United States of America | R: Railway | | Western Railroad Company | | | |
| WRSCH | | CH: Switzerland | RS: State Railway | | WRS Widmer Rail Services Personal AG | | https://www.w-r-s.ch/de/ | |
| WRSH | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Wrexham & Shropshire | | | |
| WRWR | WR | USA: United States of America | R: Railway | | Warwick Railway | | | |
| WRX | | USA: United States of America | P: Pool (Leasing / wagon pool) | | Western Refrigerator Line | | | |
| WRYM | | USA: United States of America | V: Museum | | Whippany Railway Museum | | | |
| WSB | | CH: Switzerland | R: Railway | | Wynental- und Suhrentalbahn | | | |
| WSJR | | USA: United States of America | V: Museum | | Waterloo & St. Jacobs Railway | | | |
| WSOR | | USA: United States of America | R: Railway | | Wisconsin & Southern Railroad | | | |
| WSPO | | NL: Netherlands | F: Industry (manufacturer) | | Werkspoor: Nederlandsche Fabriek van Werktuigen en Spoorwegmaterieel | | | |
| WST | | SK: Slovakia | P: Pool (Leasing / wagon pool) | | Wagon Service Travel | | http://www.wagonservice.sk/ | |
| WSTL | | USA: United States of America | C: City traffic | Chicago | West Suburban Transit Lines | | | |
| WSTT | | US-NY: USA, New York | C: City traffic | | Westchester Street Transportation | | | |
| WSW | | D: Germany | B: Bus | | | | | |
| WTBC | | USA: United States of America | C: City traffic | Chicago | West Towns Bus Company | | | |
| WTD | | D: Germany | C: City traffic | Woltersdorf | | | | |
| WTM | | A: Austria | V: Museum | | Verein Wiener Tramwaymuseum | | | |
| WUE | K.W.St.E. | D: Germany | R: Railway | | Königlich Württembergische Staatseisenbahn | | | |
| WUP | WSW | D: Germany | C: City traffic | Wuppertal | Wuppertaler Stadtwerke | | | |
| WVB | | A: Austria | C: City traffic | | Wiener Verkehrsbetriebe | | | |
| WVBA | WVB | D: Germany | C: City traffic | | Wernigeroder Verkehrsbetriebe | | | |
| WVG | | D: Germany | C: City traffic | Wolfsburg | Wolfsburger Verkehrs-GmbH | | | |
| WVMR | | USA: United States of America | TOY: Toy, modell | | Western Valley Railroad (Imagenary model railroad) | | | |
| WVMT | | CDN: Canada | B: Bus | | West Vancouver Municipal Transit | | | |
| WVR | | USA: United States of America | R: Railway | | Willamette Valley Ry. Co. | | | |
| WVRC | | USA: United States of America | R: Railway | | Wabash Valley Railroad Co. | | | |
| WVV | WSB | D: Germany | C: City traffic | Würzburg | Würzburger Straßenbahn GmbH | | https://de.wikipedia.org/wiki/Stra%C3%9Fenbahn_W%C3%BCrzburg | |
| WW | | USA: United States of America | R: Railway | | Winchester and Western R.R. Co. | | | |
| WYPTE | | GB: United Kingdom of Great Britain and Northern Ireland | C: City traffic | | West Yorkshire Passenger Transport Executive | | | |
| WZTE | | D: Germany | R: Railway | | Wilstedt - Zeven - Tostedter Eisenbahn | | | |
| X18 | | ??? | Z: Scale | | | | | |
| X36 | | ??? | Z: Scale | | | | | |
| X46 | | ??? | Z: Scale | | | | | |
| X50 | | ??? | Z: Scale | | | | | |
| X55 | | ??? | Z: Scale | | | | | |
| XAX | | MAL: Malaysia | A: Aviation | | AirAsia X | | | |
| XC | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | CrossCountry trains | | | |
| XDEL1 | | USA: United States of America | R: Railway | | NS | | | |
| XIAN | | PRC: China | C: City traffic | | Xi'an Metro | | | |
| XPEDYS | | B: Belgium | L: Logistics company | | Xpedys | Subsidiary of B-Cargo founded in 2003 | | |
| XSLO | | SK: Slovakia | ??? | | Express Slovakia | | | |
| XSTR | | AUS: Australia | I: Industry (user) | | Xstrata Rail | | | |
| XT | | S: Sweden | R: Railway | | X-Taget | Ostküstenbahn Gävle-Sundsvall/Ljusdal | | |
| YAMAS | | J: Japan | B: Bus | | Yamasaki Kanko | | | |
| YANKEE | | USA: United States of America | TB: Tourist agency | | Yankee Trails | | https://www.yankeetrails.com/ | |
| YAPAK | | RUS: Russia | C: City traffic | Yakutsk | | | | |
| YARU | | ??? | X: Phantasy | | Yamaruji Nostalgic Railway | | | |
| YCTB | | J: Japan | C: City traffic | Yokohama | Yokohama City Transportation Bureau | | en.wikipedia.org/wiki/Yokohama_City_Transportation_Bureau | |
| YDC | | USA: United States of America | R: Railway | | Yankeetown Docks Corporation | | | |
| YDHR | | CDN: Canada | TU: Touristic railway | | York-Durham Heritage Railway | | | |
| YEO | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Foster Yeoman Limited | | | |
| YEREVAN | | AM: Armenia | C: City traffic | Yerevan | | | | |
| YKR | | USA: United States of America | R: Railway | | Yorkrail, Inc. | | | |
| YMRC | | J: Japan | R: Railway | | Yokohama Minatomirai Railway Corporation | | | |
| YN | | USA: United States of America | R: Railway | | Youngstown and Northern R.R. Co. | | | |
| YOKOK | | J: Japan | B: Bus | | Yokokawa Bus | | | |
| YOLA | | RUS: Russia | C: City traffic | | MP Trolleybusniy Transport, Yoshkar-Ola | | | |
| YONK | | US-NY: USA, New York | C: City traffic | | Yonkers Transit | | | |
| YORKT | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Yorkshire Tiger | | | |
| YORO | | J: Japan | R: Railway | | Yoro Railway | Owned by Kintetsu Corporation | | |
| YPA | | YU: Yugoslavia | Y: Military | | Yugoslav People's Army | | | |
| YRT | | CDN: Canada | B: Bus | | York Region Transit (Ontario) | | | |
| YSAK | | RUS: Russia | C: City traffic | Yuzhno-Sakhalinsk | | | | |
| YSLR | | USA: United States of America | R: Railway | | Yolo Shortline R.R. Co. | | | |
| YSTC | | CH: Switzerland | R: Railway | | Yverdon-Sainte Croix | | | |
| YUAF | RVIPVO | YU: Yugoslavia | Y: Military | | Ratno vazduhoplovstvo i protivvazdušna odbrana (Yugoslav Air Force) | | | |
| YUI | | J: Japan | C: City traffic | | Okinawa Urban Monorail Incorporated | | | |
| YURI | | J: Japan | R: Railway | | Yuri Kogen Railway | | http://en.wikipedia.org/wiki/Yuri_K%C5%8Dgen_Railway_Ch%C5%8Dkai_Sanroku_Line | |
| YUZZD | | RUS: Russia | R: Railway | | Southwestern Railway | | | |
| YW | | USA: United States of America | R: Railway | | Yreka Western R.R. Co. | | | |
| YZR | | PRC: China | A: Aviation | | Yangtze River Airlines | | https://en.wikipedia.org/wiki/Suparna_Airlines | |
| Z | | ??? | Z: Scale | | 1m~25px | | | |
| ZABR | | SK: Slovakia | B: Bus | | Zájazdy Bratislava | | | |
| ZAGAN | | PL: Poland | C: City traffic | Żagan | Miejski Zakład Komunikacyjny Sp. z o.o. w Żaganiu | | | |
| ZAGR | | HR: Croatia | C: City traffic | Zagreb | | | | |
| ZAJAZD | | PL: Poland | B: Bus | Ruda Slaska | Przewóz Osób "Zajazd" sp. z o.o. | | | |
| ZAK | | PL: Poland | C: City traffic | Zakopane | | | | |
| ZALA | | H: Hungary | B: Bus | | Zala Volán | | | |
| ZAMA | | J: Japan | Y: Military | | U.S. Army Camp Zama | | | |
| ZAPPA | | I: Italy | M: Industry (railway maintenance) | | Zappa Benedetto srl | | | |
| ZAST | | YU: Yugoslavia | T: Type of car, lorry | | Zastava | | | |
| ZAWI | | PL: Poland | C: City traffic | | Zakład Komunikacji Miejskiej w Zawierciu | | https://pl.wikipedia.org/wiki/Zak%C5%82ad_Komunikacji_Miejskiej_w_Zawierciu | |
| ZAZ | | ??? | ??? | | | | | |
| ZB | | CH: Switzerland | R: Railway | | Zentralbahn | | https://de.wikipedia.org/wiki/Zentralbahn | |
| ZBH | | BIH: Bosnia-Herzegovina | R: Railway | | Zeljeznice Federacije Bosne i Hercegovine | | | UNDEFINED=Natan; |
| ZCG | | CG: Montenegro | R: Railway | | Zeljeznica Crne Gore | | http://www.zeljeznica.cg.yu/eng/index.php | |
| ZDF | | D: Germany | O: Organisation | | ZDF (Television) | | | |
| ZDUN | | PL: Poland | B: Bus | | Miejskie Przedsiębiorstwo Komunikacji sp. z o.o. Zduńska Wol | | | |
| ZENTAN | | J: Japan | B: Bus | | Zentan Bus | | | |
| ZERE | | D: Germany | B: Bus | Dortmund | Zeretzke-Reisen | | | |
| ZET | | HR: Croatia | C: City traffic | Zagreb | Zagreb Electric Tram | | | |
| ZGKC | | PL: Poland | C: City traffic | Cieszyn | Zakład Gospodarki Komunalnej w Cieszynie | | | |
| ZGPKS | | PL: Poland | B: Bus | | Zwiazek Gmin "Podkarpacka Komunikacja Samochodowa" | | | |
| ZHESM | | NL: Netherlands | ??? | | | | | |
| ZIL | | A: Austria | ??? | | Zillertalbahn | | | |
| ZKAT | | PL: Poland | B: Bus | | ZTP Katowice | | | |
| ZKMH | | PL: Poland | C: City traffic | Gdansk | Zakład Komunikacji Miejskiej w Hajnówce | | http://www.zkm.pl/ | |
| ZKPME | | UA: Ukraine | C: City traffic | Zaporizhia | Zaporizhia Municipal Electric Transport Company "Zaporizhelektrotrans" | | | |
| ZKPSL | | PL: Poland | B: Bus | | Zakład Komunikacji Publicznej Suchy Las | | https://pl.wikipedia.org/wiki/Zak%C5%82ad_Komunikacji_Publicznej_Suchy_Las | |
| ZKSZCZY | | PL: Poland | C: City traffic | Szczytno | Zaklad Komunikacji Miejskiej, sp. z o. o. | | | TX=London 1920-30s, Typ: LN;TXX=<10;TXY=20;BL=25; |
| ZKV | | RUE: Russian Empire | R: Railway | | Transcaucus Railway | | | |
| ZLASK | | PL: Poland | C: City traffic | | ZKM Lask | | | |
| ZMAF | | Z: Zambia | Y: Military | | Zambian Air Force | | | |
| ZMKSST | | PL: Poland | C: City traffic | Stalowa Wola | Zakład Miejski Komunikacji Samochodowej Stalowa Wola | | | |
| ZNDH | | NDH: Nezavisna Država Hrvatska | Y: Military | | Air Force of the Independent State of Croatia (Zrakoplovstvo Nezavisne Države Hrvatske) | | https://en.wikipedia.org/wiki/Air_Force_of_the_Independent_State_of_Croatia | |
| ZNS | | PL: Poland | B: Bus | Solec Kujawski | Zakład Naprawy Samochodów Ryszard Elszyn | | | |
| ZOB | | D: Germany | V: Museum | | Zollernbahn | | | |
| ZOS | | SK: Slovakia | F: Industry (manufacturer) | | ZOS Zvolen s.r.o. | | | |
| ZRBSZG | | PL: Poland | B: Bus | | Zakład Remontowo-Budowlany Szalejów Górny | | | |
| ZRS | | BIH: Bosnia-Herzegovina | R: Railway | | Republika Srpska Railways | | https://en.wikipedia.org/wiki/Republika_Srpska_Railways | |
| ZS | | CH: Switzerland | R: Railway | | S-Bahn Zürich | | | |
| ZSAND | | PL: Poland | C: City traffic | | ZKM Sandomierz | | | |
| ZSI | | GB: United Kingdom of Great Britain and Northern Ireland | B: Bus | | Z&S International | | | |
| ZSR | | SK: Slovakia | RS: State Railway | | Zeleznice Slovenskej Republiky | | | |
| ZSRB | ZS | SR: Serbia | R: Railway | | | | | |
| ZSSK | | SK: Slovakia | R: Railway | | Zeleznièná Spoloènost' Slovensko, a.s. | | | |
| ZSSKC | | SK: Slovakia | RO: Railway operator | | Zeleznièná Spoloènost' Slovensko, a.s. | | | |
| ZSU | ZSEV | H: Hungary | N: Narrow gauge railway | | Zsuzsivonat, Debrecen | | | |
| ZTT | | A: Austria | RO: Railway operator | | Transporttechnik Zeller KG | | | |
| ZTTU | | UA: Ukraine | C: City traffic | Zhytomyr | Zhytomyrske Tramvaino-Troleybusne Upravlinnya | | | |
| ZUG | | D: Germany | RO: Railway operator | | Smart rail GmbH | | | |
| ZUKOM | | PL: Poland | B: Bus | | Zakład Usług Komunalnych Komorniki | | | |
| ZVB | | CH: Switzerland | B: Bus | Zug | Zugerland Verkehrsbetriebe | | https://de.wikipedia.org/wiki/Zugerland_Verkehrsbetriebe | |
| ZW | | D: Germany | C: City traffic | Zwickau | | | | |
| ZWAF | | ZW: Zimbabwe | Y: Military | | Zimbabwe Air Force | | | |
| ZWG | | NL: Netherlands | B: Bus | | | | | |
| ZWN | | NL: Netherlands | B: Bus | | | | | |
| PULT | | H: Hungary | RO: Railway operator | | Pultrans Kft | | | |
| GER | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | Great Eastern Railway | | | |
| NER | | GB: United Kingdom of Great Britain and Northern Ireland | R: Railway | | North Eastern Railway | | | |
| BWD | WD | GB: United Kingdom of Great Britain and Northern Ireland | Y: Military | | War Department | | | |
| SCOZ | | USA: United States of America | I: Industry (user) | | Sprouse Creek Coal Company | | | |
| TVA | | USA: United States of America | R: Railway | | Tennessee Valley Authority | | | |
| DSA | | USA: United States of America | R: Railway | | Duluth, South Shore and Atlantic R.R. Co. | | | |
| SMAR | SMR | AUS: Australia | R: Railway | | South Maitland Railways | | | |
| EGCM | | AUS: Australia | I: Industry (user) | | East Greta Coal Mining Co. LTD | | | |
| PITT | | USA: United States of America | I: Industry (user) | | Pittsburg Coal Company | | | |
| INDR | | X: Global | I: Industry (user) | | Industry railway | General prefix for for small industrial railways, factory shunters | | |
| POMIDI | PO-Midi | F: France | R: Railway | | Chemin de Fer de Paris à Orléans et du Midi | 1934 - 1938 | | |
| RH | | AUS: Australia | R: Railway | | R&H Rail | | | |
| GTAU | | AUS: Australia | P: Pool (Leasing / wagon pool) | | Greentrains | | https://en.wikipedia.org/wiki/Greentrains | |
| CIAU | CI | AUS: Australia | ??? | | | | | |
| CRRA | CR | AUS: Australia | RI: Railway infrastructure company | | CR Rail | | www.crrail.com.au | |
| XX | | ??? | ??? | | Unknown owner | | | |
| ATHOS | | E: Spain | R: Railway | | Athos Rail S.A. | | | |
| LCR | | E: Spain | RO: Railway operator | | Low Cost Rail | | lcrail.com | |
| RAXRA | | E: Spain | RO: Railway operator | | RAXELL RAIL S.A. | | raxellrail.com | |
| MAVRT | | H: Hungary | RO: Railway operator | | MÁV Rail Tours Kft. | | | |