| 401 | RAON | R A O TRANSPORTATION INC | SCAC4 | ||
| 402 | RAOQ | RADIO TRANSFER INC | SCAC3 | ||
| 403 | RAOR | RAMOS, ROBERT TRUCKING | SCAC3 | ||
| 404 | RAOS | RANIER OVERSEAS INC | SCAC3 | ||
| 405 | RAOT | RAMOS TRANSPORTATION | SCAC3 | ||
| 406 | RAOW | RED ARROW TRANSPORTATION | SCAC3 | ||
| 407 | RAOX | General American Transportation Corp. | 7/1937-4/1961; eliminated 10/1962 | NAKINA | |
| 408 | RAOX | Roberts & Oake, Inc. (General American Tank Car Corp.) | 7/1935 | NAKINA | |
| 409 | RAOX | Roberts & Oake, Inc. | 7/1930-7/1932 | NAKINA | |
| 410 | RAOX | Roberts & Oake | 8/1920-7/1923 | NAKINA | |
| 411 | RAOX | Roberts & Oake, Inc. (General American Transportation Corp.) | Apr-38 | NRHS | |
| 412 | RAOX | General American Transportation Corp. | 1/52-4/61 | NRHS | |
| 413 | RAOX | ROBERTS & OAKE, INC. (GENERAL AMERICAN TRANSPORTATION CORP.) | PWRC | ||
| 414 | RAP | Air Center Helicopters | ICAO1 | ||
| 415 | RAPA | RAPIDMEX | SCAC4 | ||
| 416 | RAPC | RAPID TRANSPORT COMPANY | SCAC4 | ||
| 417 | RAPD | RAPIDO TRANSFER INC | SCAC4 | ||
| 418 | RAPEC | Radomskie Przedsiębiorstwo Energetyki Cieplnej RADPEC S.A. | PL | VKM | |
| 419 | RAPF | RAPID FURNITURE TRANSPORT, INC | SCAC3 | ||
| 420 | RAPH | RAPID TRANSFER | SCAC3 | ||
| 421 | RAPH | RAYMOND-A-PREHEMO | SCAC4 | ||
| 422 | RAPI | R A P EXPRESS | SCAC3 | ||
| 423 | RAPI | RAPIDEX | SCAC4 | ||
| 424 | RAPID | Rapid-Bus s.c. | City: Warszawa | PL | TRAFFIC |
| 425 | RAPK | RAPIDO'S TRUCKING (MX-367093) | SCAC4 | ||
| 426 | RAPL | RALPHS TRANSPORT LTD | SCAC3 | ||
| 427 | RAPM | RAPPLEYE, DEAN INC | SCAC3 | ||
| 428 | RAPM | REYES AUTO PARTES SA DE CV | SCAC4 | ||
| 429 | RAPN | RAPP TRUCK SERVICE | SCAC3 | ||
| 430 | RAPO | R A SPECIALISTS INC | SCAC3 | ||
| 431 | RAPO | RAPOL INC | SCAC4 | ||
| 432 | RAPP | RAPP BROS PALLET SERVICE INC | SCAC4 | ||
| 433 | RAPQ | RAPID DISTRIBUTING CORP | SCAC3 | ||
| 434 | RAPR | RAPID ROBERTS INC | SCAC4 | ||
| 435 | RAPT | R A P TRUCKING INC | SCAC4 | ||
| 436 | RAPV | RAPID AIR DELIVERY | SCAC3 | ||
| 437 | RAPV | RAPID SERVICE INC | SCAC4 | ||
| 438 | RAPW | RAP LINES INC | SCAC3 | ||
| 439 | RAPX | Rapco Transportation Co. | added 10/1981; 1/1994; eliminated 4/2000; 7/2000 (not listed) | NAKINA | |
| 440 | RAPX | Rapco Transportation Co. | added 10/81; 1/94; eliminated 4/2000; 7/2000 | NRHS | |
| 441 | RAPX | RAPCO TRANSPORTATION CO. | PWRC | ||
| 442 | RAPX | Rapco Transportation | RSRV | ||
| 443 | RAPY | RAMPLEY TRANSPORT INC | SCAC3 | ||
| 444 | RAPZ | RAPCO ENERGY | PWRC | ||
| 445 | RAQ | Rath Aviaton | ICAO1 | ||
| 446 | RAQC | ROMANA LOGISTICS LLC | SCAC4 | ||
| 447 | RAQD | RARICKS QUICK DELIVERY | SCAC3 | ||
| 448 | RAQE | RACE LOGISTICS INC | SCAC4 | ||
| 449 | RAQO | RAYS LOCAL EXPRESS | SCAC3 | ||
| 450 | RAR | Rotation International Air Services | IATA: GZ | ICAO1 | |
| 451 | RAR | RAR Eisenbahn Service AG | Ellwangen (>> HTRS Süd) | D | privat-bahn.de |
| 452 | RAR | RARITAN VALLEY BUS SERVICE | SCAC4 | ||
| 453 | RAR | Rent a Rail Eisenbahn-Service AG | D | TRAFFIC | |
| 454 | RAR | Rent-A-Rail Eisenbahn Service | DE | VKM | |
| 455 | RARA | RARITAN TRANSPORTATION SERVICES INC | SCAC3 | ||
| 456 | RARB | R & R TRUCKING INC | SCAC3 | ||
| 457 | RARD | RANTHUM TRUCKING INC | SCAC3 | ||
| 458 | RARD | RAMTHUN TRUCKING INC | SCAC4 | ||
| 459 | RARG | R AND R TRUCKING | SCAC3 | ||
| 460 | RARH | R A R EXPRESS INC | SCAC3 | ||
| 461 | RARI | R & R TRUCKING CO | SCAC3 | ||
| 462 | RARL | R AND R TRUCK LINE | SCAC3 | ||
| 463 | RARM | RARITAN MOTOR LINES, INC | SCAC3 | ||
| 464 | RARN | R & R TRUCKING | SCAC3 | ||
| 465 | RARO | R & R DELIVERY | SCAC3 | ||
| 466 | RARO | RIGS AROLLING LLC | SCAC4 | ||
| 467 | RARP | R & R TRANSPORTATION INC | SCAC3 | ||
| 468 | RARQ | RAMROD FAST FREIGHT | SCAC3 | ||
| 469 | RART | RUSTIC ARTS | SCAC4 | ||
| 470 | RARV | R A R SERVICES INC | SCAC3 | ||
| 471 | RARV | Raritan Valley Bus Service | US- | TRAFFIC | |
| 472 | RARW | Rarus Ry. Co. | added 7/1985; 1/1994-7/2005 | NAKINA | |
| 473 | RARW | Rarus Ry. Co. | 1/94-7/2000 | NRHS | |
| 474 | RARW | RARUS RAILWAY COMPANY | PWRC | ||
| 475 | RARW | Rarus Railway | RSRV | ||
| 476 | RARW | RARUS RAILWAY COMPANY | SCAC3 | ||
| 477 | RARY | R & R AUTO TRANSPORT | SCAC3 | ||
| 478 | RAS | Jim Ratliff Air Service | ICAO1 | ||
| 479 | RASA | RAI, A S TRANSPORT LTD | SCAC4 | ||
| 480 | RASB | R & S BROKERAGE COMPANY | SCAC3 | ||
| 481 | RASC | RALEIGH SHIPPING CORPORATION | SCAC3 | ||
| 482 | RASD | R A S K L D EXPRESS | SCAC3 | ||
| 483 | RASD | R & S LOGISTICS INC | SCAC4 | ||
| 484 | RASE | RJ AND SONS LLC | SCAC4 | ||
| 485 | RASG | RASMUSSE | SCAC4 | ||
| 486 | RASH | RASH OIL & FEED COMPANY | SCAC4 | ||
| 487 | RASI | RASCO & SONS AUTO TRNASPORT INC | SCAC3 | ||
| 488 | RASI | RANCHO AGRICOLA SANTA MONICA S DE R | SCAC4 | ||
| 489 | RASJ | R AND S PRODUCE TRANSPORT LLC | SCAC4 | ||
| 490 | RASK | RASK TRANSPORTATION INC | SCAC3 | ||
| 491 | RASK | RASK | SCAC4 | ||
| 492 | RASL | R&S TRANSPORTATION&LOGISTICS, INC | SCAC3 | ||
| 493 | RASM | R A S PROFESSIONAL CARGO SERVICES | SCAC3 | ||
| 494 | RASM | RAMIREZ SCRAP METALS | SCAC4 | ||
| 495 | RASN | RASMUSSEN ENTERPRISES INC | SCAC3 | ||
| 496 | RASO | R-S-K TRUCK LINES | SCAC3 | ||
| 497 | RASP | REAMES AND SON CONSTRUCTION COMPANY | SCAC4 | ||
| 498 | RASQ | R & S TRUCKING | SCAC3 | ||
| 499 | RASQ | R & S TRUCKING | SCAC4 | ||
| 500 | RASR | RASMUSSEN, ROBERT | SCAC3 |