AOK
| Arkansas-Oklahoma Railroad | 1 |
ARR
| Alaska Railroad | 2 |
BLPX
| BLPX | 2 |
BN
| Burlington Northern | 9 |
BNSF
| BNSF Railway | 66 |
BTCX
| Browner Turnout Company | 1 |
CANX
| CANAC International | 1 |
CN
| Canadian National Railways | 3 |
CW
| Colorado and Wyoming | 2 |
DODX
| Department Of Defense | 33 |
FURX
| First Union Rail | 2 |
HTTX
| TTX Company | 5 |
HWCX
| Halliburton Company | 1 |
ITTX
| TTX Company | 8 |
JTLX
| CIT Group/Capital Finance, Inc | 1 |
JTTX
| TTX Company | 2 |
LMIC
| Lake Michigan & Indiana Railroad | 2 |
LTTX
| TTX Company | 9 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 1 |
MTTX
| TTX Company | 5 |
NS
| Norfolk Southern | 1 |
OTTX
| TTX Company | 4 |
PTTX
| TTX Company | 8 |
QUAX
| Redstreak, LLC | 1 |
SJTX
| Stella Jones, Inc | 3 |
SP
| Southern Pacific | 1 |
TPDX
| TPDX | 2 |
TTHX
| TTX Company - Flat Cars | 1 |
TTYX
| TTX Company | 1 |
TZPR
| Tazewell & Peoria Railroad | 1 |
UP
| Union Pacific Railroad Company | 7 |
VASR
| VASR | 1 |