ANR
| Angelina and Neches River Railroad | 2 |
AOK
| Arkansas-Oklahoma Railroad | 19 |
ATW
| Atlantic and Western | 14 |
BAR
| Bangor & Aroostook | 37 |
BAYL
| Bay Line, LLC | 6 |
BN
| Burlington Northern | 60 |
BNSF
| BNSF Railway | 146 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 334 |
CNA
| Canadian National Railways | 733 |
CNIS
| Canadian National Railways | 52 |
CNW
| Chicago & Northwestern | 39 |
COER
| Crab Orchard & Egyptian | 23 |
CP
| Canadian Pacific Railway | 32 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 2 |
CRLE
| Coe Rail Incorporated | 55 |
CSX
| CSX Railroad | 201 |
CV
| Central Vermont | 55 |
CVC
| Canadian National Railways | 39 |
DWC
| Canadian National Railways | 163 |
FBOX
| TTX Company | 224 |
GMRC
| Green Mountain RR | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 38 |
IANR
| Iowa Northern Ry | 2 |
IC
| Illinois Central | 9 |
ICG
| Illinois Central Gulf | 9 |
KCS
| Kansas City Southern | 154 |
LRS
| Laurinburg and Southern | 33 |
LW
| Louisville and Wadley Railway Company | 139 |
MDW
| Minnesota Dakota and Western Railway Com | 9 |
MEC
| Maine Central | 2 |
MMA
| Montreal, Maine & Atlantic | 77 |
MR
| McCloud Railway Company | 18 |
MVRY
| Mahoning Valley Ry | 1 |
NDYX
| First Union Rail | 12 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 5 |
NOKL
| Northwestern Oklahoma | 144 |
NS
| Norfolk Southern | 321 |
ONT
| Ontario Northland Railway | 27 |
PMRX
| Progress Metal Reclamation Company | 12 |
QC
| Quebec Central | 16 |
QGRY
| Quebec Gatineau Railway Incorporated | 45 |
SLGG
| Progress Rail Services Corporation | 31 |
SLR
| St Lawrence & Atlantic | 16 |
SOO
| Soo Line | 17 |
SPSX
| Progress Rail Services Corp | 1 |
SRY
| Southern Railway of British Columbia Lim | 431 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
TIMX
| Trinity Industries Leasing Company | 15 |
TR
| Tomahawk Railway L.P. | 375 |
VR
| Valdosta Railway | 1 |
WC
| Wisconsin Central | 1105 |
WCCL
| Wisconsin Central | 1 |
WE
| Wheeling & Lake Erie | 13 |
WRWK
| Providence & Worchester Railroad | 1 |
YARR
| Youngstown and Austintown Railroad | 8 |
YKR
| York Rail | 69 |