ABOX
| TTX Company | 114 |
ALM
| Arkansas Louisiana and Mississippi Railr | 4 |
AOK
| Arkansas-Oklahoma Railroad | 13 |
ATW
| Atlantic and Western | 23 |
BCOL
| Canadian National Railways | 3 |
BKTY
| Union Pacific Railroad Company | 190 |
BNSF
| BNSF Railway | 11 |
CEMX
| Cemex Mexico SA de CV | 9 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CMHX
| CarMath Incorporated | 48 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 6 |
CNIS
| Canadian National Railways | 12 |
CNW
| Chicago & Northwestern | 4 |
COER
| Crab Orchard & Egyptian | 44 |
CP
| Canadian Pacific Railway | 6 |
CSX
| CSX Railroad | 14 |
EEC
| East Erie Commercial Railroad | 31 |
FBOX
| TTX Company | 23 |
FCRD
| First Coast Railway | 2 |
FRSS
| FRSS | 1 |
FSRR
| FerroSur | 483 |
FXE
| Ferromex | 1136 |
GACX
| General American Marks Company | 2 |
GRRY
| GRRY | 1 |
GTW
| Grand Trunk Western | 3 |
HS
| H and S Railroad Company | 224 |
IBT
| International Bridge and Terminal Company | 44 |
KCS
| Kansas City Southern | 92 |
KCSM
| Kansas City Southern De Mexico | 29 |
KLRX
| KOCH RAIL LLC | 5 |
KSCM
| KSCM | 1 |
LFCD
| Linea Coahuila Durango S.A. de C.V. | 7 |
LRS
| Laurinburg and Southern | 110 |
LRWN
| Little Rock & Western | 2 |
LW
| Louisville and Wadley Railway Company | 3 |
MB
| Meridian & Bigbee | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 3 |
MP
| Missouri Pacific | 8 |
MTNR
| Mississippi Tennessee Railroad LLC | 24 |
NDEM
| NDEM | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1654 |
NOKL
| Northwestern Oklahoma | 35 |
NOLK
| NOLK | 9 |
NS
| Norfolk Southern | 2 |
RBOX
| Railbox Company | 1282 |
SBC
| Ferrocarril Sonora Baja California | 1 |
SCFX
| SCFX | 1 |
SRN
| Sabine River & Northern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TBOX
| TTX Company | 964 |
TILX
| Trinity Industries Leasing Company | 59 |
TOBX
| TTX Company - Box Cars | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 5 |
TR
| Tomahawk Railway L.P. | 5 |
UCRY
| Utah Central | 3 |
UP
| Union Pacific Railroad Company | 8 |
WC
| Wisconsin Central | 17 |
WFRX
| WELLS FARGO RAIL CORPORATION | 15 |
WRWK
| Providence & Worchester Railroad | 46 |
WRWX
| Trinity Industries Inc. | 1 |