AOK
| Arkansas-Oklahoma Railroad | 9 |
BNSF
| BNSF Railway | 51 |
BTTX
| TTX Company - Autoracks | 5 |
CN
| Canadian National Railways | 12 |
CNA
| Canadian National Railways | 20 |
CP
| Canadian Pacific Railway | 15 |
CPAA
| Canadian Pacific Railway | 1 |
CTTX
| TTX Company - Autoracks | 56 |
DODX
| Department Of Defense | 1 |
ETTX
| TTX Company - Autoracks | 203 |
GTW
| Grand Trunk Western | 6 |
KCS
| Kansas City Southern | 3 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 14 |
NS
| Norfolk Southern | 23 |
PW
| Providence and Worcester | 10 |
SFLC
| BNSF Railway | 9 |
SOO
| Soo Line | 6 |
SP
| Southern Pacific | 7 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TOAX
| TTX Company - Autoracks | 1 |
TOCX
| TTX Company - Autoracks | 4 |
TTGX
| TTX Company-Autoracks | 1659 |
TTUX
| TTX Company | 42 |
UCRY
| Utah Central | 2 |
UP
| Union Pacific Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 4 |