AOK
| Arkansas-Oklahoma Railroad | 7 |
BNSF
| BNSF Railway | 14 |
CP
| Canadian Pacific Railway | 7 |
CSX
| CSX Railroad | 5 |
KCS
| Kansas City Southern | 44 |
MRL
| Montana Rail Link | 1 |
NOKL
| Northwestern Oklahoma | 1 |
RRLX
| Rail Logistics, LC | 1 |
TR
| Tomahawk Railway L.P. | 1 |
WP
| Western Pacific | 1 |