ATSF
| Atchison Topeka & Santa Fe | 10 |
BN
| Burlington Northern | 11 |
BNSF
| BNSF Railway | 13 |
CN
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 5 |
CP
| Canadian Pacific Railway | 8 |
CR
| Conrail | 16 |
CSX
| CSX Railroad | 28 |
DLRX
| General Electric Rail Services | 1 |
DRGW
| Denver & Rio Grande Western | 3 |
FXE
| Ferromex | 2 |
GTW
| Grand Trunk Western | 4 |
KCS
| Kansas City Southern | 3 |
MP
| Missouri Pacific | 7 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NS
| Norfolk Southern | 19 |
SFLC
| BNSF Railway | 1 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 5 |
TFM
| Kansas City Southern De Mexico | 2 |
TINX
| Trinity Railcar | 4 |
TNM
| Union Pacific Railroad Company | 2 |
TOAX
| TTX Company - Autoracks | 1 |
UP
| Union Pacific Railroad Company | 7 |