ALT
| AIRLAKE TERMINAL RAILWAY COMPANY | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 2 |
CSX
| CSX Railroad | 2 |
DODX
| Department Of Defense | 1 |
FEC
| Florida East Coast | 1 |
FTSX
| Fairmont Tamper | 1 |
HTTX
| TTX Company | 2 |
ICE
| Iowa Chicago and Eastern | 1 |
ITTX
| TTX Company | 2 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 1 |
MTTX
| TTX Company | 1 |
NLAX
| National Aeronautics and Space Administration (NASA) | 1 |
NS
| Norfolk Southern | 1 |
ONT
| Ontario Northland Railway | 1 |
OTTX
| TTX Company | 6 |
PHMX
| P&H Mining Equipment | 6 |
PTTX
| TTX Company | 3 |
QTTX
| TTX Company | 5 |
TTHX
| TTX Company - Flat Cars | 5 |
TXTT
| TXTT | 1 |
UP
| Union Pacific Railroad Company | 3 |
XTTX
| TTX Company | 1 |