AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 8 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CLC
| Columbia and Cowlitz Railway Company | 5 |
CRLE
| Coe Rail Incorporated | 2 |
FBOX
| TTX Company | 5 |
GVSR
| Galveston Railroad L.P. | 1 |
IBT
| International Bridge and Terminal Company | 5 |
KCS
| Kansas City Southern | 22 |
LW
| Louisville and Wadley Railway Company | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 1 |
SP
| Southern Pacific | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 11 |
TR
| Tomahawk Railway L.P. | 3 |
UP
| Union Pacific Railroad Company | 1 |
VCY
| Galveston Railroad, L.P. | 4 |
WC
| Wisconsin Central | 2 |