ASLX
| American Surface Lines, LLC | 1 |
AWXX
| East Carbon development Company | 3 |
BLPX
| BLPX | 2 |
BN
| Burlington Northern | 2 |
BTCX
| Browner Turnout Company | 1 |
CNW
| Chicago & Northwestern | 1 |
CWM
| CWM | 1 |
DODX
| Department Of Defense | 2 |
FALX
| Falk Corporation | 1 |
FTSX
| Fairmont Tamper | 1 |
HTTX
| TTX Company | 1 |
ITTX
| TTX Company | 2 |
JTTX
| TTX Company | 1 |
KRL
| Kasgro Rail Lines | 6 |
KWUX
| Siemens Power Corporation | 1 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
LMIX
| Loram Maintenance of Way Inc. | 1 |
LSMR
| LSMR | 1 |
LTTX
| TTX Company | 1 |
MILW
| Milwaukee Road | 2 |
MTTX
| TTX Company | 1 |
MVKX
| Tubular Transport Services | 1 |
NP
| Northern Pacific | 1 |
ONT
| Ontario Northland Railway | 1 |
OTTX
| TTX Company | 1 |
PGR
| Progressive Rail, Inc | 1 |
QTTX
| TTX Company | 11 |
QUAX
| Redstreak, LLC | 6 |
SJTX
| Stella Jones, Inc | 1 |
SOO
| Soo Line | 4 |
SPS
| Spokane Portland & Seattle | 1 |
TBCX
| Boeing Company | 1 |
TPDX
| TPDX | 1 |
TSH
| Tshiuetin Rail Transportation Inc | 1 |
TTHX
| TTX Company - Flat Cars | 1 |
TTIX
| TTX | 1 |
TTJX
| TTX Company-Bulkhead Flats | 2 |
TTYX
| TTX Company | 1 |
TVRR
| Tulare Valley Railroad Company | 1 |
TZPR
| Tazewell & Peoria Railroad | 1 |
UP
| Union Pacific Railroad Company | 1 |
UPP
| Union Pacific Passenger | 1 |
XTTX
| TTX Company | 1 |