AC
| Algoma Central | 1 |
ALT
| AIRLAKE TERMINAL RAILWAY COMPANY | 4 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ASLX
| American Surface Lines, LLC | 10 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
BN
| Burlington Northern | 9 |
BNSF
| BNSF Railway | 20 |
CBQ
| Chicago Burlington & Quincy | 6 |
CITX
| CIT Group/Capital Finance, Inc | 10 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 15 |
CR
| Conrail | 1 |
CW
| Colorado and Wyoming | 4 |
DODX
| Department Of Defense | 5 |
FEC
| Florida East Coast | 10 |
GN
| Great Northern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 17 |
HTTX
| TTX Company | 5 |
ICE
| Iowa Chicago and Eastern | 2 |
ITTX
| TTX Company | 11 |
JTTX
| TTX Company | 8 |
KRL
| Kasgro Rail Lines | 14 |
KWUX
| Siemens Power Corporation | 3 |
LTTX
| TTX Company | 2 |
MILW
| Milwaukee Road | 12 |
MTTX
| TTX Company | 12 |
NP
| Northern Pacific | 2 |
NREX
| National Railway Equipment | 1 |
NW
| Norfolk & Western | 1 |
OTTX
| TTX Company | 15 |
PC
| Penn Central | 3 |
PEYX
| Transportation Technology Services Inc | 3 |
PGR
| Progressive Rail, Inc | 14 |
PHMX
| P&H Mining Equipment | 11 |
PTTX
| TTX Company | 8 |
QTTX
| TTX Company | 20 |
RCBT
| RCBT | 1 |
SITX
| Sherritt International Corporation | 2 |
SOO
| Soo Line | 13 |
SP
| Southern Pacific | 4 |
TTAX
| TTX Company - Spine Cars | 1 |
TTDX
| TTX Company - DOD Service Flats | 1 |
TTHX
| TTX Company - Flat Cars | 7 |
TTX
| TTX Company | 3 |
TTYX
| TTX Company | 2 |
TZPR
| Tazewell & Peoria Railroad | 3 |
UP
| Union Pacific Railroad Company | 3 |
XTTX
| TTX Company | 2 |