CPAA
| Canadian Pacific Railway | 1 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 3 |
HS
| H and S Railroad Company | 1 |
MB
| Meridian & Bigbee | 1 |
MQT
| Marquette Rail | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
RBOX
| Railbox Company | 5 |
SGLR
| Seminole Gulf | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |