AOKX
| Greenbrier Management Services, LLC | 14 |
ATSF
| Atchison Topeka & Santa Fe | 8 |
BNSF
| BNSF Railway | 17 |
BTFX
| BROWNER TURNOUT COMPANY | 2 |
CIGX
| THE CIT GROUP/CAPITAL FINANCE, INC. | 1 |
CITX
| CIT Group/Capital Finance, Inc | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 1 |
CW
| Colorado and Wyoming | 2 |
DODX
| Department Of Defense | 64 |
HTTX
| TTX Company | 2 |
ICE
| Iowa Chicago and Eastern | 8 |
ITTX
| TTX Company | 2 |
KCS
| Kansas City Southern | 1 |
KRL
| Kasgro Rail Lines | 49 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
MP
| Missouri Pacific | 9 |
MTTX
| TTX Company | 1 |
OTTX
| TTX Company | 5 |
PEYX
| Transportation Technology Services Inc | 4 |
PGR
| Progressive Rail, Inc | 1 |
PTTX
| TTX Company | 16 |
QTTX
| TTX Company | 26 |
QUAX
| Redstreak, LLC | 1 |
SP
| Southern Pacific | 6 |
TBCX
| Boeing Company | 2 |
TEXX
| TEXX | 9 |
TPDX
| TPDX | 10 |
TTTX
| TTX Company | 1 |
TTX
| TTX Company | 1 |
TTYX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 14 |
WP
| Western Pacific | 3 |
XTTX
| TTX Company | 11 |