AOK
| Arkansas-Oklahoma Railroad | 8 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
BNSF
| BNSF Railway | 40 |
BTTX
| TTX Company - Autoracks | 1 |
CN
| Canadian National Railways | 16 |
CNA
| Canadian National Railways | 34 |
CP
| Canadian Pacific Railway | 12 |
CPAA
| Canadian Pacific Railway | 8 |
CSX
| CSX Railroad | 1 |
CTTX
| TTX Company - Autoracks | 32 |
ETTX
| TTX Company - Autoracks | 94 |
GTW
| Grand Trunk Western | 18 |
KCS
| Kansas City Southern | 4 |
NAFX
| General Electric Rail Services | 2 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 22 |
NS
| Norfolk Southern | 7 |
PW
| Providence and Worcester | 16 |
RP
| Railpool | 1 |
SFLC
| BNSF Railway | 4 |
SOO
| Soo Line | 17 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 17 |
SSW
| St Louis Southwestern (Cotton Belt) | 14 |
TGX
| TGX | 2 |
TOCX
| TTX Company - Autoracks | 1 |
TTGX
| TTX Company-Autoracks | 466 |
TTUX
| TTX Company | 10 |
UCRY
| Utah Central | 6 |
UP
| Union Pacific Railroad Company | 4 |
WRW
| WRW | 2 |
WRWK
| Providence & Worchester Railroad | 4 |