AGR
| Alabama and Gulf Coast | 48 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 5 |
BKTY
| Union Pacific Railroad Company | 26 |
BM
| Boston & Maine | 17 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CNW
| Chicago & Northwestern | 5 |
COER
| Crab Orchard & Egyptian | 5 |
CP
| Canadian Pacific Railway | 16 |
CSX
| CSX Railroad | 8 |
EDC
| EDC | 1 |
EEC
| East Erie Commercial Railroad | 171 |
FGLK
| Finger Lakes Railway | 17 |
FRR
| Falls Road Railroad Company Incorporated | 2 |
GMRC
| Green Mountain RR | 48 |
GTRA
| Golden Triangle Railroad | 7 |
GVSR
| Galveston Railroad L.P. | 1 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 26 |
IANR
| Iowa Northern Ry | 1 |
KCS
| Kansas City Southern | 18 |
LBR
| Lowville and Beaver River Railroad Compa | 29 |
LRS
| Laurinburg and Southern | 9 |
MB
| Meridian & Bigbee | 1 |
MEC
| Maine Central | 73 |
MRL
| Montana Rail Link | 2 |
MSDR
| Knoxville & Holston River Railroad | 4 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 8 |
SGLR
| Seminole Gulf | 6 |
SIRX
| Southern Illinois Railcar Company | 4 |
SLR
| St Lawrence & Atlantic | 1 |
SNC
| Saratoga & North Creek Railway | 4 |
SOU
| Southern | 9 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 9 |
TR
| Tomahawk Railway L.P. | 1 |
WC
| Wisconsin Central | 2 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
WRWK
| Providence & Worchester Railroad | 5 |