ANR
| Angelina and Neches River Railroad | 1 |
BNSF
| BNSF Railway | 4 |
CSX
| CSX Railroad | 3 |
DWC
| Canadian National Railways | 1 |
FBOX
| TTX Company | 1 |
KCS
| Kansas City Southern | 1 |
LW
| Louisville and Wadley Railway Company | 5 |
NOKL
| Northwestern Oklahoma | 2 |
TR
| Tomahawk Railway L.P. | 20 |
UCRY
| Utah Central | 3 |
WC
| Wisconsin Central | 2 |