AGR
| Alabama and Gulf Coast | 13 |
ALM
| Arkansas Louisiana and Mississippi Railr | 2 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 6 |
BAEX
| Andersons | 3 |
BKTY
| Union Pacific Railroad Company | 71 |
BM
| Boston & Maine | 4 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
COER
| Crab Orchard & Egyptian | 2 |
CP
| Canadian Pacific Railway | 24 |
CPAA
| Canadian Pacific Railway | 2 |
CSX
| CSX Railroad | 9 |
EEC
| East Erie Commercial Railroad | 46 |
FCRD
| First Coast Railway | 3 |
FGLK
| Finger Lakes Railway | 24 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GMRC
| Green Mountain RR | 49 |
GNRR
| Georgia Northeastern | 2 |
HLMX
| Helm Financial Corporation | 4 |
HS
| H and S Railroad Company | 36 |
IANR
| Iowa Northern Ry | 6 |
ITFX
| INFINITY TRANSPORTATION III LLC | 2 |
KCS
| Kansas City Southern | 23 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 3 |
LRS
| Laurinburg and Southern | 25 |
MB
| Meridian & Bigbee | 5 |
MEC
| Maine Central | 43 |
MMA
| Montreal, Maine & Atlantic | 34 |
MRL
| Montana Rail Link | 1 |
MSDR
| Knoxville & Holston River Railroad | 17 |
NOKL
| Northwestern Oklahoma | 7 |
NS
| Norfolk Southern | 8 |
PAL
| Paducah & Louisville | 2 |
RPMX
| RPMG INC | 1 |
SGLR
| Seminole Gulf | 5 |
SIRX
| Southern Illinois Railcar Company | 1 |
SLR
| St Lawrence & Atlantic | 6 |
SMW
| St Marys Railway West LLC | 4 |
SNC
| Saratoga & North Creek Railway | 11 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 7 |
WC
| Wisconsin Central | 2 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 4 |