AOK
| Arkansas-Oklahoma Railroad | 631 |
BNSF
| BNSF Railway | 3503 |
BRAN
| Brandon Rail | 2561 |
CP
| Canadian Pacific Railway | 168 |
DTTX
| TTX Company - Double Stack Cars | 20692 |
FEC
| Florida East Coast | 84 |
GTW
| Grand Trunk Western | 96 |
IAIS
| Iowa Interstate | 59 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 55 |
NOKL
| Northwestern Oklahoma | 3 |
SFLC
| BNSF Railway | 18 |
WRWK
| Providence & Worchester Railroad | 26 |