| 9501 | RWTQ | RED WING TRUCKING | SCAC4 | ||
| 9502 | RWTR | RED & WHITE MARKET & TRANSFER INC | SCAC3 | ||
| 9503 | RWTS | ROWLEYS TOWING | SCAC3 | ||
| 9504 | RWTS | ROYALWOOD TRANSPORT | SCAC4 | ||
| 9505 | RWTT | RED WING TRANSPORTATION INC | SCAC3 | ||
| 9506 | RWTU | ROYAL WOLF TRADING AUSTRALIA PTY LT | SCAC4 | ||
| 9507 | RWTV | RIGHTWAY TRAVEL AGENCY INC | SCAC3 | ||
| 9508 | RWTX | Railwest US, Inc. | added 7/1998; 7/2000-7/2005 | NAKINA | |
| 9509 | RWTX | Railwest US, Inc. | added 7/98; 7/2000 | NRHS | |
| 9510 | RWTX | RAILWEST US INCORPORATED | PWRC | ||
| 9511 | RWTX | Railwest US | RSRV | ||
| 9512 | RWTX | RAILWEST US INC | SCAC4 | ||
| 9513 | RWTZ | Satellite Intermodal Express | RSRV | ||
| 9514 | RWVL | RED & WHITE VAN LINES INC | SCAC3 | ||
| 9515 | RWVS | ROADS WEST | SCAC3 | ||
| 9516 | RWWP | REGENCY WORLDWIDE PACKING INC | SCAC3 | ||
| 9517 | RWXC | R W SERVICE SYSTEM INC | PWRC | ||
| 9518 | RWXC | ROADWAY EXPRESS | SCAC3 | ||
| 9519 | RWXC | RETHWISCH TRANSPORT, LLC | SCAC4 | ||
| 9520 | RWXE | RITEWAY EXPRESS INC | SCAC3 | ||
| 9521 | RWXI | ROWE TRANSPORT INC | SCAC4 | ||
| 9522 | RWXL | RW TRANS LLC | SCAC4 | ||
| 9523 | RWXP | RIGHT WAY EXPRESS INC | SCAC3 | ||
| 9524 | RWXP | RIGHT WAY EXPRESS INC | SCAC4 | ||
| 9525 | RWXT | RAND, W T TRANSPORT LLC | SCAC4 | ||
| 9526 | RWY | Aerogroup 98 Limited | ICAO1 | ||
| 9527 | RWYC | RWAY INC | SCAC3 | ||
| 9528 | RWYC | RIGHTWAY TRUCKING LLC | SCAC4 | ||
| 9529 | RWYD | RIDEWAY TRANSPORT LTD | SCAC4 | ||
| 9530 | RWYI | RITEWAY TRANSFER INC | SCAC3 | ||
| 9531 | RWYN | ROADWAY CONTAINER INC | SCAC4 | ||
| 9532 | RWYP | ROADWAY CORP | SCAC4 | ||
| 9533 | RWYQ | REDWAY CARRIER | SCAC3 | ||
| 9534 | RWYR | RATHWAY, ROBERT TRUCKING | SCAC3 | ||
| 9535 | RWYR | ROADWAY TRANSPORT CORP | SCAC4 | ||
| 9536 | RWYT | RICH-WAY TRANSPORTATION INC | SCAC4 | ||
| 9537 | RX | Oklahoma Tank Car Co. | 7/1937-1/1950 | NAKINA | |
| 9538 | RX | Oklahoma Tank Car Co. | Apr-38 | NRHS | |
| 9539 | RX | OKLAHOMA TANK CAR CO. | PWRC | ||
| 9540 | RX | Rail-X AB | SE | VKM | |
| 9541 | RXA | Regional Express | IATA: ZL | ICAO1 | |
| 9542 | RXAQ | ROLLING EXPRESS AGENCY | SCAC3 | ||
| 9543 | RXAQ | RENTX TRANSPORTATION SERVICES CORPO | SCAC4 | ||
| 9544 | RXAT | REX AIRE TRANSPORT | SCAC3 | ||
| 9545 | RXAT | REEFER XPRESS LINES INC (DIV OF | SCAC4 | ||
| 9546 | RXBM | REXBURG MOBILE HOME SALES | SCAC3 | ||
| 9547 | RXBM | ROLLON EXPRESS INC | SCAC4 | ||
| 9548 | RXCG | RAINIER EXPRESS CARGO | SCAC4 | ||
| 9549 | RXCN | RX CONSOLIDATORS INC | SCAC3 | ||
| 9550 | RXCN | REGIO EXPRESS | SCAC4 | ||
| 9551 | RXCO | RICHMOND EXPRESS CO INC | SCAC3 | ||
| 9552 | RXCQ | REXHAM CORP | SCAC3 | ||
| 9553 | RXDE | RX DELIVERY | SCAC3 | ||
| 9554 | RXDE | RICOCHET XPRESS XPEDITERS INC | SCAC4 | ||
| 9555 | RXDS | REED EXPRESS DELIVERY SERVICE | SCAC4 | ||
| 9556 | RXEI | ROXIES EXPRESS INC | SCAC4 | ||
| 9557 | RXIC | ROSS' EXPRESS, INC | SCAC3 | ||
| 9558 | RXIC | ROSS EXPRESS INC | SCAC4 | ||
| 9559 | RXIE | RV XPRESS INC | SCAC4 | ||
| 9560 | RXIF | REX INTL FORWARDING CO LTD | SCAC4 | ||
| 9561 | RXIT | REXITE INC | SCAC3 | ||
| 9562 | RXKG | RUX TRUCKING | SCAC4 | ||
| 9563 | RXLD | RUSH EXPRESS LTD | SCAC3 | ||
| 9564 | RXLI | ROUTE TRANSPORTATION & LOGISTICS IN | SCAC4 | ||
| 9565 | RXLN | REDEX LOGISTICS INC | SCAC4 | ||
| 9566 | RXLS | RAMAX LOGISTICS | SCAC4 | ||
| 9567 | RXLT | REXLOR TRANSPORT INC | SCAC3 | ||
| 9568 | RXLW | REIMER EXPRESS LINES, (WESTERN) LTD | SCAC3 | ||
| 9569 | RXLW | REFLEX TRUCK LINERS | SCAC4 | ||
| 9570 | RXMC | ROMCAN EXPRESS LIMITED | SCAC4 | ||
| 9571 | RXMQ | REX MOTOR FREIGHT COMPANY | SCAC3 | ||
| 9572 | RXMQ | ROADSTAR EXPRESS LLC | SCAC4 | ||
| 9573 | RXMY | REX MEYERS TRANSFER | SCAC3 | ||
| 9574 | RXNA | ROXANA SHIPPING S A | SCAC4 | ||
| 9575 | RXNC | REX & CO INC | SCAC3 | ||
| 9576 | RXOC | REX OIL CO INC | SCAC4 | ||
| 9577 | RXOM | REX OIL COMPANY INC | SCAC4 | ||
| 9578 | RXP | Royal Aviation Express | ICAO1 | ||
| 9579 | RXP | Rail Experts | NL | TRAFFIC | |
| 9580 | RXPC | RAYNOR EXPRESS CORP | SCAC3 | ||
| 9581 | RXPC | RAYNOR EXPRESS CORP | SCAC4 | ||
| 9582 | RXPD | RARITAN EXPRESS DISTRIBUTION INC | SCAC3 | ||
| 9583 | RXPE | R EXPRESS | SCAC3 | ||
| 9584 | RXPE | RAI EXPRESS LINES LTD | SCAC4 | ||
| 9585 | RXPF | RANGER EXPRESS FORWARDING INC | SCAC4 | ||
| 9586 | RXPG | RESOURCE TRANSPORT LLC | SCAC4 | ||
| 9587 | RXPH | ROAD XPRESS | SCAC4 | ||
| 9588 | RXPI | REGIONAL EXPRESS INC | SCAC4 | ||
| 9589 | RXPK | READY EXPRESS INC | SCAC4 | ||
| 9590 | RXPL | REGAL TRANSPORT SYSTEMS LLC | SCAC4 | ||
| 9591 | RXPN | RICHLAND EXPRESS INC | SCAC3 | ||
| 9592 | RXPP | RELIABLE EXPRESS TRANSPORTATION INC | SCAC4 | ||
| 9593 | RXPQ | REDLANDS EXPRESS CO INC | SCAC3 | ||
| 9594 | RXPQ | RUXPINS EXPRESS | SCAC4 | ||
| 9595 | RXPR | RELIABLE EXPRESS INC | SCAC3 | ||
| 9596 | RXPR | RELIABLE EXPRESS INC | SCAC4 | ||
| 9597 | RXRC | REXROTH CORPORATION | SCAC3 | ||
| 9598 | RXRE | REPUBLIC EXPRESS CORP | SCAC4 | ||
| 9599 | RXRT | RITTER TRANSPORTATION | SCAC4 | ||
| 9600 | RXSC | REXANAX SHIPPING COMPANY LIMITED | SCAC4 |