| 1 | RMB | Routemaster Buses Ltd. | | GB | TRAFFIC |
| 2 | RMBA | RUMBA SHIPPING LIMITED | | | SCAC3 |
| 3 | RMBA | RMT TRANSPORT LLC | | | SCAC4 |
| 4 | RMBC | RAMSDE | | | SCAC4 |
| 5 | RMBC | RMB Club | | USA | TRAFFIC |
| 6 | RMBD | RAMBAUD INTERNATIONAL | | | SCAC3 |
| 7 | RMBD | RELIABLE METAL BUILDINGS LTD | | | SCAC4 |
| 8 | RMBE | R M B ENTERPRISES INC | | | SCAC4 |
| 9 | RMBF | RMB OILFIELD SERVICES | | | SCAC4 |
| 10 | RMBH | ROSIE MOBILE HOME TOWING INC | | | SCAC3 |
| 11 | RMBI | R & M LOGISTICS LLC | | | SCAC4 |
| 12 | RMBK | RUMBLE TRUCKING & LOGISTICS INC | | | SCAC4 |
| 13 | RMBL | RAMIREZ, BLANCA E | | | SCAC4 |
| 14 | RMBM | RA ELLS MOBILE MOVING | | | SCAC3 |
| 15 | RMBN | RAMBONE TRUCKING CO INC | | | SCAC3 |
| 16 | RMBN | RMF SOLUTIONS | | | SCAC4 |
| 17 | RMBO | RAMBO REEFER SERVICES | | | SCAC3 |
| 18 | RMBP | ROCKY MOUNTAIN BRAKE SUPPLY INC | | | SCAC4 |
| 19 | RMBQ | RMB CORP | | | SCAC3 |
| 20 | RMBR | RAMBLER TRUCKING INC | | | SCAC3 |
| 21 | RMBS | REINER BROS INC | | | SCAC3 |
| 22 | RMBS | RMB SHIPPING BV | | | SCAC4 |
| 23 | RMBT | ROMNEY, BUCK TRUCKING | | | SCAC3 |
| 24 | RMBT | ROMNEY, BUCK TRUCKING | | | SCAC4 |
| 25 | RMBX | American Refrigerator Transit Co. | added 7/1962; 7/1965-4/1970; eliminated 4/1972 | | NAKINA |
| 26 | RMBX | American Refrigerator Transit Co. | 7/65-4/70; eliminated 4/72 | | NRHS |
| 27 | RMBX | AMERICAN REFRIGERATOR TRANSIT CO. | | | PWRC |
