AGR
| Alabama and Gulf Coast | 28 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 18 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CP
| Canadian Pacific Railway | 13 |
CSX
| CSX Railroad | 7 |
EEC
| East Erie Commercial Railroad | 43 |
GMRC
| Green Mountain RR | 33 |
GNRR
| Georgia Northeastern | 5 |
HS
| H and S Railroad Company | 5 |
IANR
| Iowa Northern Ry | 4 |
KCS
| Kansas City Southern | 6 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
MEC
| Maine Central | 19 |
MMA
| Montreal, Maine & Atlantic | 15 |
MSDR
| Knoxville & Holston River Railroad | 9 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 8 |
NS
| Norfolk Southern | 12 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 4 |
SMW
| St Marys Railway West LLC | 1 |
SNC
| Saratoga & North Creek Railway | 4 |
SOU
| Southern | 3 |
SRN
| Sabine River & Northern | 3 |
TSRD
| Twin State Railroad Company | 1 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 3 |
YKR
| York Rail | 1 |