| 1 | RAO | Real Aerolub de Malaga | | E | AVCODES |
| 2 | RAOB | RODAS AUTO BODY | | | SCAC3 |
| 3 | RAOC | ROLAND AND ASSOCIATES TRANSPORT SER | | | SCAC3 |
| 4 | RAOH | RAMSON, HUGH L | | | SCAC3 |
| 5 | RAOM | R&O MOTOR AGENCIES TEXAS INC | | | SCAC3 |
| 6 | RAON | R A O TRANSPORTATION INC | | | SCAC4 |
| 7 | RAOQ | RADIO TRANSFER INC | | | SCAC3 |
| 8 | RAOR | RAMOS, ROBERT TRUCKING | | | SCAC3 |
| 9 | RAOS | RANIER OVERSEAS INC | | | SCAC3 |
| 10 | RAOT | RAMOS TRANSPORTATION | | | SCAC3 |
| 11 | RAOW | RED ARROW TRANSPORTATION | | | SCAC3 |
| 12 | RAOX | General American Transportation Corp. | 7/1937-4/1961; eliminated 10/1962 | | NAKINA |
| 13 | RAOX | Roberts & Oake, Inc. (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 14 | RAOX | Roberts & Oake, Inc. | 7/1930-7/1932 | | NAKINA |
| 15 | RAOX | Roberts & Oake | 8/1920-7/1923 | | NAKINA |
| 16 | RAOX | Roberts & Oake, Inc. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 17 | RAOX | General American Transportation Corp. | 1/52-4/61 | | NRHS |
| 18 | RAOX | ROBERTS & OAKE, INC. (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
