ARMN
| Union Pacific Railroad Company | 81 |
BNSF
| BNSF Railway | 9 |
CKIX
| C.K. Industries | 1 |
CN
| Canadian National Railways | 3 |
CRYX
| Cryo-Trans Incorporated | 45 |
CSX
| CSX Railroad | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
JRSX
| J.R. Simplot Company | 18 |
NRDX
| Rail Logistics, LC | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TILX
| Trinity Industries Leasing Company | 3 |
TPIX
| Tropicana Transportation Corp | 1 |