AOK
| Arkansas-Oklahoma Railroad | 5 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BNSF
| BNSF Railway | 32 |
BTTX
| TTX Company - Autoracks | 7 |
CMO
| Chicago St Paul Minneapolis & Omaha | 3 |
CN
| Canadian National Railways | 10 |
CNA
| Canadian National Railways | 14 |
CP
| Canadian Pacific Railway | 20 |
CPAA
| Canadian Pacific Railway | 6 |
CSX
| CSX Railroad | 5 |
CTTX
| TTX Company - Autoracks | 87 |
ETTX
| TTX Company - Autoracks | 413 |
FEC
| Florida East Coast | 1 |
GTW
| Grand Trunk Western | 10 |
KCS
| Kansas City Southern | 20 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 34 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 7 |
PW
| Providence and Worcester | 67 |
SFLC
| BNSF Railway | 13 |
SOO
| Soo Line | 10 |
SP
| Southern Pacific | 38 |
SSW
| St Louis Southwestern (Cotton Belt) | 13 |
TTEX
| TTX Company - Articulated Flat Cars (TOFC/COFC) | 1 |
TTGX
| TTX Company-Autoracks | 2403 |
TTUX
| TTX Company | 10 |
UCRY
| Utah Central | 22 |
UP
| Union Pacific Railroad Company | 10 |
WRWK
| Providence & Worchester Railroad | 41 |