ATTX
| TTX Company - Container Flats | 5 |
ATW
| Atlantic and Western | 1 |
BCOL
| Canadian National Railways | 1 |
BLHX
| SMBC RAIL SERVICES LLC | 2 |
BNSF
| BNSF Railway | 2 |
BTCX
| Browner Turnout Company | 10 |
BVRY
| Brandywine Valley Railroad Company | 1 |
CC
| Chicago Central & Pacific | 7 |
CN
| Canadian National Railways | 11 |
CP
| Canadian Pacific Railway | 4 |
CSS
| Chicago South Shore And South Bend | 4 |
CW
| Colorado and Wyoming | 13 |
ESTX
| Energy Solutions | 4 |
FTSX
| Fairmont Tamper | 2 |
FTTX
| TTX Company | 1 |
FURX
| First Union Rail | 1 |
GIMX
| General American Marks Company | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 4 |
HESX
| Heritage Environmental Services | 3 |
HTTX
| TTX Company | 3 |
IC
| Illinois Central | 5 |
ICE
| Iowa Chicago and Eastern | 10 |
ITTX
| TTX Company | 8 |
JTSX
| Joseph Transportation Incorporated | 2 |
KRL
| Kasgro Rail Lines | 1 |
LMIC
| Lake Michigan & Indiana Railroad | 10 |
LTTX
| TTX Company | 3 |
MTTX
| TTX Company | 2 |
OTTX
| TTX Company | 7 |
PTTX
| TTX Company | 26 |
QTTX
| TTX Company | 6 |
RISX
| RISX | 1 |
RTTX
| TTX Company | 3 |
SOO
| Soo Line | 3 |
SOU
| Southern | 1 |
SPSX
| Progress Rail Services Corp | 1 |
TTCX
| TTX Company | 3 |
TTDX
| TTX Company - DOD Service Flats | 1 |
TZPR
| Tazewell & Peoria Railroad | 2 |
UP
| Union Pacific Railroad Company | 6 |
UTTX
| TTX Company | 1 |
VSR
| Valley & Siletz RR | 1 |
VTTX
| TTX Company | 8 |
WC
| Wisconsin Central | 5 |
XTTX
| TTX Company | 1 |
YARR
| Youngstown and Austintown Railroad | 1 |