AERC
| Albany and Eastern Railroad Company | 14 |
AGLF
| Knoxville & Holston River Railroad | 5 |
AGR
| Alabama and Gulf Coast | 133 |
AHW
| Fox Valley and Western Limited | 1 |
ALAB
| Alabama Railroad | 15 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AM
| Arkansas & Missouri | 29 |
ANGX
| Andersons - Railgroup | 2 |
ATW
| Atlantic and Western | 159 |
AWVR
| Unstoppable Movie Railroad | 1 |
BAEX
| Andersons | 18 |
BB
| Buckingham Branch | 7 |
BCLR
| Bay Colony | 13 |
BCOL
| Canadian National Railways | 11 |
BISX
| Brandenburg Industrial Service Co | 3 |
BKTY
| Union Pacific Railroad Company | 151 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 127 |
BNSF
| BNSF Railway | 96 |
BR
| Buffalo and Pittsburgh | 52 |
CAGY
| Columbus & Greenville Railway | 3 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 15 |
CCR
| Corinth & Counce | 1 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CEMX
| Cemex Mexico SA de CV | 3 |
CIRR
| Chattahoochee Industrial Railroad | 63 |
CN
| Canadian National Railways | 140 |
CNA
| Canadian National Railways | 261 |
CNIS
| Canadian National Railways | 118 |
CNW
| Chicago & Northwestern | 272 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 746 |
CPAA
| Canadian Pacific Railway | 200 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 2276 |
CTN
| Canton Railroad Company | 18 |
CUOH
| Columbus and Ohio River Railroad Company | 109 |
DL
| Delaware-Lackawanna Railroad Company | 1 |
DM
| Detroit & Mackinac | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 8 |
EEC
| East Erie Commercial Railroad | 108 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 16 |
FCRD
| First Coast Railway | 124 |
FEC
| Florida East Coast | 3 |
FGLK
| Finger Lakes Railway | 57 |
FRDN
| H and S Railroad Company Incorporated | 2 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 200 |
GACX
| General American Marks Company | 14 |
GBW
| Green Bay & Western | 1 |
GMRC
| Green Mountain RR | 3 |
GMRX
| GMRX | 1 |
GNRR
| Georgia Northeastern | 74 |
GNWR
| Genesee and Wyoming Railroad Company | 245 |
GTRA
| Golden Triangle Railroad | 6 |
GTW
| Grand Trunk Western | 122 |
HCRY
| Huron Central Railway | 117 |
HESR
| Huron and Eastern | 61 |
HLMX
| Helm Financial Corporation | 2 |
HS
| H and S Railroad Company | 569 |
IANR
| Iowa Northern Ry | 159 |
IATR
| Iowa Traction Railroad Company | 57 |
IC
| Illinois Central | 67 |
ICG
| Illinois Central Gulf | 62 |
IFRX
| Infinity Rail LLC | 13 |
ITFX
| INFINITY TRANSPORTATION III LLC | 3 |
KCS
| Kansas City Southern | 159 |
KCSM
| Kansas City Southern De Mexico | 1 |
KWT
| KWT Railway | 13 |
KYLE
| Kyle Railroad | 14 |
KYRX
| Progress Rail Services Corporation | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 17 |
LFCD
| Linea Coahuila Durango S.A. de C.V. | 8 |
LRS
| Laurinburg and Southern | 314 |
LRWN
| Little Rock & Western | 21 |
LVRC
| Lamoille Valley | 12 |
LXOH
| Knoxville & Holston River Railroad | 3 |
MB
| Meridian & Bigbee | 7 |
MDR
| Kansas City Southern | 2 |
MNNR
| Minnesota Commercial | 4 |
MP
| Missouri Pacific | 65 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
MQT
| Marquette Rail | 201 |
MRL
| Montana Rail Link | 23 |
MRS
| Manufacturers Railway | 2 |
MSDR
| Knoxville & Holston River Railroad | 58 |
MTR
| Montour RR | 1 |
NADX
| General Electric Rail Services | 1 |
NDYX
| First Union Rail | 3 |
NHCR
| New Hampshire Central Railroad | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 20 |
NOKL
| Northwestern Oklahoma | 112 |
NOPB
| New Orleans Public Belt Railroad | 16 |
NPGX
| NEWPAGE CORP | 2 |
NS
| Norfolk Southern | 1401 |
NW
| Norfolk & Western | 1 |
NWR
| Nashville & Western Railroad Corp. | 4 |
NYC
| New York Central | 1 |
OAR
| Old Augusta Railroad | 155 |
OHCR
| Ohio Central | 1 |
OHPA
| Ohio and Pennsylvania Railroad Company | 13 |
ONT
| Ontario Northland Railway | 38 |
p
| P | 1 |
PMRX
| Progress Metal Reclamation Company | 27 |
POHC
| Pittsburgh & Ohio Central | 20 |
PRL
| Penn Eastern Rail Lines Incorporated | 4 |
PRSX
| Progress Rail Service | 3 |
QC
| Quebec Central | 1 |
RBMN
| Reading Blue Mountain & Northern | 6 |
RGCX
| Rio Grande Chemical LTD | 3 |
RJCC
| R.J. Corman Railroad/Kentucky Lines | 6 |
RMGX
| Andersons - Railgroup | 7 |
RVSC
| Rio Valley Switching Company | 10 |
SBD
| Seaboard System | 10 |
SCFE
| South Central Florida Express Incorporated | 2 |
SGLR
| Seminole Gulf | 31 |
SIND
| Southern Indiana Railway Incorporated | 1 |
SLC
| San Luis Central Railroad Company | 27 |
SLGG
| Progress Rail Services Corporation | 100 |
SLR
| St Lawrence & Atlantic | 3 |
SLSF
| Saint Louis-San Francisco | 3 |
SNC
| Saratoga & North Creek Railway | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 2007 |
SPSX
| Progress Rail Services Corp | 6 |
SRN
| Sabine River & Northern | 35 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 16 |
TNMR
| Texas and New Mexico | 1 |
TSRD
| Twin State Railroad Company | 2 |
USAX
| United States Army | 3 |
WCCL
| Wisconsin Central | 96 |
WCOR
| Wellsboro and Corning Railroad Company | 27 |
WE
| Wheeling & Lake Erie | 22 |
WFRX
| WELLS FARGO RAIL CORPORATION | 20 |
WGCR
| Wiregrass Central Railroad. Incorporated | 4 |
WLO
| Waterloo Railway Company (Illinois Central) | 227 |
WRWK
| Providence & Worchester Railroad | 220 |
WSOR
| Wisconsin & Southern | 34 |
WTRM
| Warren and Trumbull Railroad Company | 43 |
WVRC
| WABASH VALLEY RAILROAD CO. | 3 |
YKR
| York Rail | 10 |
YVRR
| Yadkin Valley | 38 |