AN
| Apalachicola Northern | 3 |
CAGY
| Columbus & Greenville Railway | 1 |
CN
| Canadian National Railways | 1 |
CSX
| CSX Railroad | 1 |
DSI
| DSI | 1 |
IATR
| Iowa Traction Railroad Company | 1 |
LMIX
| Loram Maintenance of Way Inc. | 5 |
UP
| Union Pacific Railroad Company | 1 |
YRC
| York Rail | 2 |