AGR
| Alabama and Gulf Coast | 20 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AM
| Arkansas & Missouri | 4 |
AOK
| Arkansas-Oklahoma Railroad | 5 |
ASAB
| Bay Line Railroad LLC | 1 |
ATW
| Atlantic and Western | 10 |
BKTY
| Union Pacific Railroad Company | 129 |
BM
| Boston & Maine | 1 |
CCR
| Corinth & Counce | 1 |
CNW
| Chicago & Northwestern | 9 |
CP
| Canadian Pacific Railway | 3 |
CSX
| CSX Railroad | 6 |
EEC
| East Erie Commercial Railroad | 19 |
FCRD
| First Coast Railway | 2 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GMRC
| Green Mountain RR | 5 |
GTRA
| Golden Triangle Railroad | 4 |
GVSR
| Galveston Railroad L.P. | 1 |
HLMX
| Helm Financial Corporation | 2 |
HS
| H and S Railroad Company | 6 |
IANR
| Iowa Northern Ry | 1 |
KCS
| Kansas City Southern | 38 |
KCSM
| Kansas City Southern De Mexico | 5 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LRS
| Laurinburg and Southern | 23 |
LRWN
| Little Rock & Western | 1 |
MP
| Missouri Pacific | 8 |
MTNR
| Mississippi Tennessee Railroad LLC | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 4 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 6 |
SMW
| St Marys Railway West LLC | 2 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 4 |
SRN
| Sabine River & Northern | 84 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 4 |
WCCL
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 14 |