ARMN
| Union Pacific Railroad Company | 4 |
BNSF
| BNSF Railway | 2 |
CSX
| CSX Railroad | 1 |
MDT
| Merchants Despatch Transportation | 2 |
MILW
| Milwaukee Road | 5 |
REX
| Railway Express Agency, Inc. | 1 |
TILX
| Trinity Industries Leasing Company | 3 |
TPIX
| Tropicana Transportation Corp | 25 |