AOKX
| Greenbrier Management Services, LLC | 2 |
ATSF
| Atchison Topeka & Santa Fe | 6 |
BNSF
| BNSF Railway | 12 |
BTFX
| BTFX | 1 |
CIGX
| THE 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 | 1 |
ICE
| Iowa Chicago and Eastern | 7 |
KRL
| Kasgro Rail Lines | 38 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
MP
| Missouri Pacific | 6 |
MTTX
| TTX Company | 1 |
OTTX
| TTX Company | 5 |
PEYX
| Transportation Technology Services Inc | 3 |
PGR
| Progressive Rail, Inc | 1 |
PTTX
| TTX Company | 13 |
QTTX
| TTX Company | 12 |
QUAX
| Redstreak, LLC | 1 |
SP
| Southern Pacific | 2 |
TBCX
| Boeing Company | 4 |
TEXX
| TEXX | 7 |
TPDX
| TPDX | 3 |
TTTX
| TTX Company | 1 |
TTX
| TTX Company | 1 |
TTYX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 8 |
WP
| Western Pacific | 3 |
XTTX
| TTX Company | 4 |