| 3501 | RGPN | RE-GAL TRANSPORTATION INC | SCAC3 | ||
| 3502 | RGPO | R G TRANSPORT INC | SCAC3 | ||
| 3503 | RGPO | R G TRANSPORT LLC | SCAC4 | ||
| 3504 | RGPQ | R T I GROUP INC | SCAC4 | ||
| 3505 | RGPR | RED DOG CORPORATION | SCAC3 | ||
| 3506 | RGPS | RGP TRANSPORTES | SCAC4 | ||
| 3507 | RGPX | Royal Gas Products Corp. | added 4/1960; 4/1961; eliminated 10/1961 | NAKINA | |
| 3508 | RGPX | Royal Gas Products Corp. | Apr-61 | NRHS | |
| 3509 | RGPX | ROYAL GAS PRODUCTS CORP. | PWRC | ||
| 3510 | RGQS | REGENT QUINCE SHIPPING CO LTD | SCAC3 | ||
| 3511 | RGR | Region Air | ICAO1 | ||
| 3512 | RGRA | ROGERS, RALPH A | SCAC3 | ||
| 3513 | RGRA | RICO GUERRA, GABINO | SCAC4 | ||
| 3514 | RGRC | RODRIGUE, RICHARD | SCAC4 | ||
| 3515 | RGRD | ROGERS DEDICATED SERVICES, INC | SCAC3 | ||
| 3516 | RGRD | ROGERS DEDICATED SERVICES INC | SCAC4 | ||
| 3517 | RGRE | RIG RUNNER EXPRESS | SCAC3 | ||
| 3518 | RGRE | RODRIGUE, RHEAUME BERNARD | SCAC4 | ||
| 3519 | RGRF | ROGERS FARMS | SCAC3 | ||
| 3520 | RGRF | ROUGE RIVER FARMS INC | SCAC4 | ||
| 3521 | RGRG | RAAB, GEORGE | SCAC4 | ||
| 3522 | RGRI | RAGER, RONALD INC | SCAC3 | ||
| 3523 | RGRK | RODGERS TRUCKING | SCAC3 | ||
| 3524 | RGRL | REGOGO RACING LLC | SCAC4 | ||
| 3525 | RGRN | ROGERS TRUCKING INC | SCAC3 | ||
| 3526 | RGRN | RIG RUNNERS INC | SCAC4 | ||
| 3527 | RGRO | RAMBLING ROSE TRUCKING | SCAC4 | ||
| 3528 | RGRR | ROGERS TRANSPORT SYSTEMS LLC | SCAC4 | ||
| 3529 | RGRS | ROGERS, C J TRANS CO | SCAC3 | ||
| 3530 | RGRS | ROGERS FOODS LTD | SCAC4 | ||
| 3531 | RGRT | ROGERS TOWING SERVICE | SCAC4 | ||
| 3532 | RGRTA | Rochester-Genesee Regional Transportation Authority | USA | TRAFFIC | |
| 3533 | RGRW | REGIONAL RELOCATION & WAREHOUSING I | SCAC3 | ||
| 3534 | RGRW | REGIONAL RELOCATION & WAREHOUSING I | SCAC4 | ||
| 3535 | RGRX | Rio Grande Railcar Co., Inc. | 1/1994-7/2005 (not listed) | NAKINA | |
| 3536 | RGRX | Rio Grande Railcar Co., Inc. | 1/94-7/2000 | NRHS | |
| 3537 | RGRX | RIO GRANDE RAILCAR COMPANY, INC. | PWRC | ||
| 3538 | RGRX | Rio Grande Railcar | RSRV | ||
| 3539 | RGRX | RIO GRANDE RAILCAR COMPANY, INC. | SCAC4 | ||
| 3540 | RGRY | ROBLES GONZALEZ, REY DAVID | SCAC4 | ||
| 3541 | RGRZ | CSX TRANSPORTATION, INC. | PWRC | ||
| 3542 | RGS | Renown Aviation | ICAO1 | ||
| 3543 | RGS | RIO GRANDE SOUTHERN RAILROAD | PWRC | ||
| 3544 | RGS | Rio Grande Southern Railroad | RSRV | ||
| 3545 | RGS | Rio Grande Southern | USA | TRAFFIC | |
| 3546 | RGSA | RIGEL SCHIFFAHRTS GMBH | SCAC3 | ||
| 3547 | RGSC | ROGERS CARTAGE INC | SCAC3 | ||
| 3548 | RGSD | RUGGLES, DAVID TRUCKING | SCAC3 | ||
| 3549 | RGSE | RISING SUN EXPRESS INC | SCAC3 | ||
| 3550 | RGSE | RISING SUN EXPRESS LLC | SCAC4 | ||
| 3551 | RGSF | RINDEL TRUCKING | SCAC4 | ||
| 3552 | RGSG | R & G EXPRESS INC | SCAC4 | ||
| 3553 | RGSI | RG TRANSPORTATION SERVICE | SCAC3 | ||
| 3554 | RGSI | RG TRANSPORTATION SERVICE | SCAC4 | ||
| 3555 | RGSJ | REDERIJ G S JOUSTRA Y1ST | SCAC3 | ||
| 3556 | RGSK | RIGGS TRUCKING & EXCAVATION INC | SCAC3 | ||
| 3557 | RGSL | REMINGTON SHIPPING LIMITED | SCAC3 | ||
| 3558 | RGSN | ROGERS TRANSPORTS INC | SCAC3 | ||
| 3559 | RGSQ | ROGERS TRUCKING | SCAC3 | ||
| 3560 | RGSR | REGISTERED TRANSPORTATON SYSTEMS IN | SCAC3 | ||
| 3561 | RGSS | RUNGSTED SHIPPING APS | SCAC3 | ||
| 3562 | RGST | R G S TRUCKING | SCAC3 | ||
| 3563 | RGST | REGISTER TRUCKING | SCAC4 | ||
| 3564 | RGSV | ROGERS TRUCK SERVICE INC | SCAC3 | ||
| 3565 | RGT | Airbourne School of Flying | ICAO1 | ||
| 3566 | RGT | REGIOTRANS SRL | RO | VKM | |
| 3567 | RGTC | RIGGLE TRUCKING INC | SCAC4 | ||
| 3568 | RGTD | REICHERT, GENE TRUCKING INC | SCAC3 | ||
| 3569 | RGTF | ROGERS TRANSFER, INC | SCAC3 | ||
| 3570 | RGTF | RIVERA GAS TRANSPORTADORA SA DE CV | SCAC4 | ||
| 3571 | RGTI | ROGERS, LOREN TRUCKING COMPANY | SCAC3 | ||
| 3572 | RGTJ | RGTS | SCAC4 | ||
| 3573 | RGTL | RAGSDALE TRUCK LINE INC | SCAC3 | ||
| 3574 | RGTL | R & G TRANSPORT LTD | SCAC4 | ||
| 3575 | RGTM | ROGERS TRUCKING INC | SCAC3 | ||
| 3576 | RGTN | ROME GEORGIA TRANSPORT INC | SCAC4 | ||
| 3577 | RGTO | RANGER TRANSPORT (DIVISION OF LENS | SCAC4 | ||
| 3578 | RGTP | R&G TRANSPORTATION, Cargo Systems, INC | SCAC3 | ||
| 3579 | RGTQ | ROGERS TRANSFER | SCAC3 | ||
| 3580 | RGTQ | RD G TRUCKIN LLC | SCAC4 | ||
| 3581 | RGTR | REGAL WEST CORP | SCAC4 | ||
| 3582 | RGTR | Regiotrans Brasov | RO | TRAFFIC | |
| 3583 | RGTS | REGAL TRANSPORTATION SERVICES INC | SCAC3 | ||
| 3584 | RGTS | RACING TRANSPORTS LLC | SCAC4 | ||
| 3585 | RGTU | DENVER & RIO GRANDE WESTERN | PWRC | ||
| 3586 | RGTU | Denver and Rio Grande Western Railroad (Union Pacific Railroad) | RSRV | ||
| 3587 | RGTV | ROGERS, TROY VAN | SCAC3 | ||
| 3588 | RGTW | RAYS GARAGE TOWING | SCAC3 | ||
| 3589 | RGTW | ROLLING THUNDER INC | SCAC4 | ||
| 3590 | RGTX | Residco | 1/1994-7/2005 (not listed) | NAKINA | |
| 3591 | RGTX | Residco | 1/94-7/2000 | NRHS | |
| 3592 | RGTX | RESIDCO | PWRC | ||
| 3593 | RGTX | Denver and Rio Grande Western Railroad (Residco) | RSRV | ||
| 3594 | RGTX | RESIDCO | SCAC4 | ||
| 3595 | RGTY | RIO GRAND TRANSPORT | SCAC3 | ||
| 3596 | RGTY | ROBINSON, GERALD TRUCKING | SCAC4 | ||
| 3597 | RGTZ | UP [SP] [DENVER & RIO GRANDE WESTERN] | PWRC | ||
| 3598 | RGTZ | Denver and Rio Grande Western Railroad (Union Pacific Railroad) | RSRV | ||
| 3599 | RGTZ | UNION PACIFIC RAILROAD COMPANY | SCAC4 | ||
| 3600 | RGUA | RANCHO GUACATAY | SCAC4 |