CUOH
| Columbus and Ohio River Railroad Company | 3 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
FSRR
| FerroSur | 2 |
HS
| H and S Railroad Company | 1 |
LRWN
| Little Rock & Western | 2 |
MB
| Meridian & Bigbee | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
RBOX
| Railbox Company | 75 |