AOK
| Arkansas-Oklahoma Railroad | 1 |
BCIT
| Canadian National Railways | 2 |
BCOL
| Canadian National Railways | 13 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 3 |
CAGY
| Columbus & Greenville Railway | 1 |
HLSC
| Hampton Railway Incorporated | 2 |
MMA
| Montreal, Maine & Atlantic | 1 |
MSRC
| Kansas City Southern | 2 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 4 |
TTZX
| TTX Company-Centerbeam Flats | 5 |
UP
| Union Pacific Railroad Company | 8 |