AKMD
| Arkansas Midland Railroad Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 1 |
BNSF
| BNSF Railway | 6 |
CN
| Canadian National Railways | 3 |
CRLE
| Coe Rail Incorporated | 3 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 1 |
FDDM
| Fort Dodge Des Moines & Southern | 2 |
FURX
| First Union Rail | 1 |
HLSC
| Hampton Railway Incorporated | 3 |
LRWN
| Little Rock & Western | 1 |
MSRC
| Kansas City Southern | 2 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 10 |
NS
| Norfolk Southern | 2 |
SMW
| St Marys Railway West LLC | 1 |
TR
| Tomahawk Railway L.P. | 5 |
TTZX
| TTX Company-Centerbeam Flats | 57 |
UP
| Union Pacific Railroad Company | 10 |
WRWK
| Providence & Worchester Railroad | 3 |