AOK
| Arkansas-Oklahoma Railroad | 6 |
ARZC
| Arizona and California Railroad | 1 |
ASLX
| American Surface Lines, LLC | 1 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 19 |
BTCX
| Browner Turnout Company | 1 |
CN
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 4 |
DODX
| Department Of Defense | 47 |
HTTX
| TTX Company | 9 |
IC
| Illinois Central | 2 |
ICE
| Iowa Chicago and Eastern | 1 |
ITTX
| TTX Company | 4 |
JTTX
| TTX Company | 2 |
KRL
| Kasgro Rail Lines | 49 |
LMIC
| Lake Michigan & Indiana Railroad | 3 |
LTTX
| TTX Company | 2 |
MNNR
| Minnesota Commercial | 1 |
MP
| Missouri Pacific | 1 |
OTTX
| TTX Company | 10 |
PTTX
| TTX Company | 3 |
QTTX
| TTX Company | 7 |
QUAX
| Redstreak, LLC | 1 |
RBBX
| Ringling Bros. and Barnum and Bailey | 14 |
SOO
| Soo Line | 3 |
TBCX
| Boeing Company | 1 |
TPDX
| TPDX | 1 |
TTHX
| TTX Company - Flat Cars | 1 |
TTJX
| TTX Company-Bulkhead Flats | 2 |
UP
| Union Pacific Railroad Company | 13 |
WPRR
| Willamette and Pacific | 1 |
XTTX
| TTX Company | 5 |