AOK
| Arkansas-Oklahoma Railroad | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 1 |
CAXX
| CEMENTO CRUZ AZUL | 1 |
CEMX
| Cemex Mexico SA de CV | 1 |
COER
| Crab Orchard & Egyptian | 1 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 1 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 3 |
GAMX
| Arrendadora Nacional De Carros De Ferrocaril | 2 |
HS
| H and S Railroad Company | 3 |
LFCD
| Linea Coahuila Durango S.A. de C.V. | 1 |
MEC
| Maine Central | 1 |
MRL
| Montana Rail Link | 1 |
NDEM
| NDEM | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 2 |
RBOX
| Railbox Company | 1 |
TBOX
| TTX Company | 1 |
TFM
| Kansas City Southern De Mexico | 4 |
TR
| Tomahawk Railway L.P. | 2 |