AOK
| Arkansas-Oklahoma Railroad | 1 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 2 |
CAGY
| Columbus & Greenville Railway | 1 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CKIX
| C.K. Industries | 1 |
CSX
| CSX Railroad | 6 |
FEC
| Florida East Coast | 1 |
ICG
| Illinois Central Gulf | 1 |
JETX
| Jefferson Transportation LLC | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NOKL
| Northwestern Oklahoma | 1 |
SBD
| Seaboard System | 1 |
SOO
| Soo Line | 1 |
TR
| Tomahawk Railway L.P. | 2 |