ACL
| Atlantic Coast Line | 14 |
ADN
| Ashley Drew & Northern | 2 |
AEX
| Andersons | 57 |
AGLF
| Knoxville & Holston River Railroad | 1 |
AMGX
| AMG Resources Corporation | 2 |
AN
| Apalachicola Northern | 4 |
AOKX
| Greenbrier Management Services, LLC | 2 |
APA
| Apache Railway Company | 5 |
ASAB
| Bay Line Railroad LLC | 9 |
ASPX
| American Steel Processing Co | 6 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 1 |
AWP
| Atlanta & West Point | 1 |
BAR
| Bangor & Aroostook | 5 |
BAYL
| Bay Line, LLC | 4 |
BCOL
| Canadian National Railways | 26 |
BFTX
| Bill Frank Trucking | 4 |
BN
| Burlington Northern | 47 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 1 |
CAIX
| CAI Rail Inc. | 2 |
CFMG
| Chemin De Fer De La Matapedia Et Du Golf | 1 |
CG
| Central Of Georgia | 2 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CLNA
| Carolina Coastal Railway Incorporated | 1 |
CMFX
| CMFX | 10 |
CN
| Canadian National Railways | 74 |
CO
| Chesapeake & Ohio | 1 |
COP
| City of Prineville Railway | 7 |
CP
| Canadian Pacific Railway | 10 |
CRDX
| Chicago Freight Car Leasing Company | 14 |
CSIX
| Cycle Systems Inc. | 1 |
CSX
| CSX Railroad | 176 |
CTWX
| CONSHOHOCKEN RAIL, LLC | 1 |
CYXX
| Conrad Yelvington Distributors, Inc | 3 |
ECCX
| Ethyl Canada Incorporated | 1 |
ECXX
| East Carbon Development Company | 4 |
EMRY
| Eastern Maine Railway Company | 1 |
ESIX
| Envirosolutions Inc | 1 |
FP
| Fordyce & Princeton Railroad Company | 1 |
FPBX
| International Paper Corporation | 19 |
FRX
| FRX | 1 |
GACX
| General American Marks Company | 87 |
GBRX
| Greenbrier Leasing Corporation | 23 |
GINX
| GINX | 1 |
GMO
| Gulf Mobile & Ohio | 2 |
GN
| Great Northern | 26 |
GNRR
| Georgia Northeastern | 1 |
GPMX
| Georgia-Pacific Corporation- Mid Continent Wood Products Mfg | 3 |
GPSX
| Georgia-Pacific Corporation Eastern Wood Products Mfg.Divisi | 60 |
GPWX
| Georgia-Pacific Corp | 18 |
GRBX
| GRBX | 1 |
GVSR
| Galveston Railroad L.P. | 4 |
HCCX
| Southeastern Industrial Enterprises, Inc | 1 |
HCSX
| Helm Chesapeake LLP | 1 |
HPJX
| Helm-Pacific Leasing | 39 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 3 |
IFRX
| Infinity Rail LLC | 22 |
JTSX
| Joseph Transportation Incorporated | 1 |
KCS
| Kansas City Southern | 5 |
KCSX
| KCSX | 1 |
KSCX
| KAPSTONE CHARLESTON KRAFT, LLC | 18 |
LFP
| Langdale Forest Products | 2 |
LFPX
| Lane Forest Products Inc | 25 |
LN
| Louisville & Nashville | 4 |
MAEX
| M A ENERGY RESOURCES LLC | 8 |
MB
| Meridian & Bigbee | 4 |
MCNX
| Burlington Electric Department | 10 |
MILW
| Milwaukee Road | 5 |
MP
| Missouri Pacific | 4 |
MRL
| Montana Rail Link | 6 |
MSV
| Mississippi and Skuna Valley Railroad Co | 2 |
MWCX
| Midwest Railcar Corporation | 37 |
NBSR
| New Brunswick Southern Railway Company L | 4 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 1 |
NP
| Northern Pacific | 18 |
NPBX
| NPBX | 1 |
NS
| Norfolk Southern | 186 |
NW
| Norfolk & Western | 32 |
NYSW
| New York Susquehanna & Western | 5 |
PFPX
| Calpac, LLC | 5 |
PLCX
| General Electric Rail Services | 1 |
PMR
| PMR | 1 |
PMRX
| Progress Metal Reclamation Company | 1 |
REGX
| Regus Industries LLC | 1 |
RMGX
| Andersons - Railgroup | 1 |
RONX
| RONX | 1 |
RORX
| Red Oak Rail Transport Llc | 2 |
ROXX
| Rocky Mountain Recycling, Inc. | 3 |
RRLX
| Rail Logistics, LC | 2 |
RTIX
| RTI - Railroad Services | 1 |
SAL
| Seaboard Air Line | 1 |
SAN
| Sandersville | 19 |
SAS
| South African Railways | 2 |
SBD
| Seaboard System | 12 |
SCL
| Seaboard Coast Line | 10 |
SCTR
| South Central Tennessee | 4 |
SDIX
| Steel Dynamics, Inc | 1 |
SIEX
| Southeastern Industrial Enterprises Incorporated | 4 |
SMIX
| Structural Metals Incorporated | 1 |
SOU
| Southern | 304 |
SP
| Southern Pacific | 40 |
SPS
| Spokane Portland & Seattle | 5 |
SPSX
| Progress Rail Services Corp | 2 |
SRAX
| Southern Rail Associates | 2 |
STWX
| Steelwheels Llc | 10 |
SWCX
| SWCX | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 10 |
TPPX
| Thilmany LLC | 12 |
UP
| Union Pacific Railroad Company | 17 |
USSC
| United States Sugar | 1 |
USWX
| USA Waste Services Incorporated | 1 |
WC
| Wisconsin Central | 2 |
WCTX
| West Central Cooperative | 5 |
WP
| Western Pacific | 2 |
WPRR
| Willamette and Pacific | 3 |
WRA
| Western Railway of Alabama | 2 |
WTCX
| Weyerhauser | 10 |
WVCX
| Mead-Westvaco Corporation | 34 |