Railroad Picture Archives
| Mark | Name | Type | Locomotives | Rollingstock | Added |
|---|---|---|---|---|---|
| AR | Aberdeen and Rockfish | Short Lines | 13 | 37 | 1/1/2000 |
| ACWR | Aberdeen, Carolina & Western | Short Lines | 76 | 39 | 1/1/2000 |
| AKDN | Acadiana Railway Company | Short Lines | 11 | 1 | 1/1/2000 |
| ADBF | Adrian and Blissfield Rail Road Company | Short Lines | 19 | 30 | 1/1/2000 |
| ALKX | Airlake Terminal Railway Co. | Short Lines | 0 | 18 | 1/1/2000 |
| ABB | Akron and Barberton Belt Railroad Company | Short Lines | 10 | 2 | 1/1/2000 |
| AB | Akron and Barberton Cluster Railway Company | Short Lines | 16 | 6 | 1/1/2000 |
| AFLR | Alabama & Florida RR | Short Lines | 12 | 0 | 1/1/2000 |
| ATN | Alabama & Tennessee River Railway Llc | Short Lines | 19 | 2 | 5/3/2008 |
| AF | Alabama and Florida Railway Company | Short Lines | 8 | 46 | 1/1/2000 |
| AGR | Alabama and Gulf Coast | Short Lines | 67 | 1333 | 1/1/2000 |
| ALAB | Alabama Railroad | Short Lines | 5 | 338 | 1/1/2000 |
| ABS | Alabama Southern Railroad | Short Lines | 1 | 78 | 1/16/2008 |
| ABL | Alameda Belt Line | Short Lines | 4 | 0 | 4/6/2008 |
| AGCR | Alamo Gulf Coast Railroad Company | Short Lines | 2 | 1 | 5/3/2008 |
| AERC | Albany and Eastern Railroad Company | Short Lines | 17 | 302 | 1/1/2000 |
| ARN | Alberta RailNet Incorporated | Short Lines | 14 | 1 | 1/1/2000 |
| ARC | Alexander Railroad | Short Lines | 10 | 5 | 1/1/2000 |
| AWW | Algiers Winslow and Western Railway | Short Lines | 12 | 2 | 1/1/2000 |
| ALQS | Aliquippa and Southern Railroad Company | Short Lines | 14 | 1 | 4/20/2008 |
| ALY | Allegheny and Eastern Railroad Incorpora | Short Lines | 15 | 159 | 1/1/2000 |
| ASR | Allegheny Southern Railroad Incorporated | Short Lines | 1 | 0 | 9/3/2009 |
| AVR | Allegheny Valley | Short Lines | 22 | 1 | 1/1/2000 |
| ALLN | Allentown and Auburn Railroad | Short Lines | 5 | 12 | 9/21/2014 |
| AL | Almanor Railroad Company | Short Lines | 5 | 3 | 12/25/2008 |
| ANR | Angelina and Neches River Railroad | Short Lines | 4 | 111 | 1/1/2000 |
| APA | Apache Railway Company | Short Lines | 17 | 42 | 1/1/2000 |
| AN | Apalachicola Northern | Short Lines | 30 | 120 | 1/1/2000 |
| AO | Appalachian & Ohio | Short Lines | 30 | 3 | 1/1/2000 |
| APNC | Appanoose County Community Railroad | Short Lines | 2 | 1 | 1/16/2008 |
| ARA | Arcade and Attica Railroad Corporation | Short Lines | 10 | 11 | 1/1/2000 |
| ARZC | Arizona and California Railroad | Short Lines | 35 | 15 | 1/1/2000 |
| AZCR | Arizona Central Railroad | Short Lines | 12 | 2 | 1/1/2000 |
| AZER | Arizona Eastern Railway Company | Short Lines | 53 | 106 | 1/1/2000 |
| AM | Arkansas & Missouri | Short Lines | 63 | 283 | 1/1/2000 |
| ALM | Arkansas Louisiana and Mississippi Railr | Short Lines | 18 | 475 | 1/1/2000 |
| AKMD | Arkansas Midland Railroad Company | Short Lines | 26 | 79 | 1/1/2000 |
| AOK | Arkansas-Oklahoma Railroad | Short Lines | 34 | 6827 | 1/1/2000 |
| ARND | Arnaud Railway | Short Lines | 2 | 0 | 1/1/2000 |
| AVL | Aroostook Valley Railroad Company | Short Lines | 1 | 4 | 5/29/2009 |
| ASDA | Asbestos & Danville | Short Lines | 2 | 0 | 7/27/2011 |
| ASRY | Ashland Railway | Short Lines | 19 | 13 | 1/1/2000 |
| ADN | Ashley Drew & Northern | Short Lines | 17 | 126 | 1/1/2000 |
| ACJR | Ashtabula Carson Jefferson Railroad Company | Short Lines | 3 | 6 | 11/26/2009 |
| ANY | Athabasca Northern Railway | Short Lines | 3 | 1 | 9/7/2008 |
| AD | Atlantic & Danville | Short Lines | 7 | 1 | 1/1/2000 |
| ATW | Atlantic and Western | Short Lines | 11 | 5379 | 1/1/2000 |
| AEFR | Aurora Elgin and Fox River Electric | Short Lines | 3 | 1 | 1/25/2008 |
| AUAR | Austin Area Terminal Railway | Short Lines | 14 | 1 | 1/1/2000 |
| ATLT | Austin Todd and Ladd Railroad Company | Short Lines | 10 | 4 | 1/1/2000 |
| BDTL | Ballard Terminal Railroad Company | Short Lines | 1 | 0 | 5/2/2010 |
| BH | Bath & Hammondsport | Short Lines | 6 | 5 | 1/1/2000 |
| BKRR | Batten Kill Railroad | Short Lines | 2 | 14 | 1/1/2000 |
| BXN | Bauxite and Northern Railway Company | Short Lines | 9 | 0 | 1/1/2000 |
| BCR | Bay Coast Railroad | Short Lines | 11 | 9 | 1/1/2000 |
| BCLR | Bay Colony | Short Lines | 17 | 53 | 1/1/2000 |
| ASAB | Bay Line Railroad LLC | Short Lines | 27 | 149 | 1/1/2000 |
| BAYL | Bay Line, LLC | Short Lines | 49 | 175 | 1/1/2000 |
| BMH | Beaufort and Morehead Railroad Co | Short Lines | 8 | 1 | 1/1/2000 |
| BMRR | Beech Mountain Railroad | Short Lines | 1 | 1 | 9/2/2011 |
| BEEM | Beech Mountain Railroad Corporation | Short Lines | 5 | 0 | 10/16/2009 |
| BML | Belfast & Mooshead Lake | Short Lines | 9 | 21 | 1/1/2000 |
| BDRV | Belvidere & Delaware Railroad | Short Lines | 31 | 33 | 1/1/2000 |
| BMS | Berlin Mills | Short Lines | 7 | 14 | 1/1/2000 |
| BGCM | Bg & Cm Railroad | Short Lines | 6 | 1 | 1/1/2000 |
| BHP | BHP Nevada Railroad Company | Short Lines | 28 | 0 | 1/1/2000 |
| BER | Big Eagle Rail | Short Lines | 2 | 9 | 8/5/2012 |
| BDW | Bighorn Divide & Wyoming Railroad | Short Lines | 6 | 16 | 1/1/2000 |
| BS | Birmingham Southern RR | Short Lines | 71 | 116 | 1/1/2000 |
| BHRR | Birmingham Terminal Railway | Short Lines | 9 | 61 | 3/13/2013 |
| BRW | Black River And Western | Short Lines | 30 | 40 | 1/1/2000 |
| BLR | Blackland | Short Lines | 10 | 0 | 1/1/2000 |
| BNG | Blackwell Northern Gateway Railroad Comp | Short Lines | 1 | 48 | 5/28/2007 |
| BLOL | Bloomer Shippers Connecting Railroad Co. | Short Lines | 12 | 3 | 1/1/2000 |
| BLMR | Blue Mountain | Short Lines | 6 | 1 | 1/1/2000 |
| BMRG | Blue Mountain & Reading | Short Lines | 12 | 5 | 1/1/2000 |
| BOP | Border Pacific Railroad Company | Short Lines | 3 | 0 | 4/20/2008 |
| BRAN | Brandon Rail | Short Lines | 4 | 1752 | 1/1/2000 |
| BVRY | Brandywine Valley Railroad Company | Short Lines | 11 | 155 | 1/1/2000 |
| BRG | Brownsville and Rio Grande International Railroad | Short Lines | 13 | 7 | 1/1/2000 |
| BCSR | Buckeye Central Scenic Railroad | Short Lines | 1 | 0 | 1/1/2000 |
| BB | Buckingham Branch | Short Lines | 21 | 68 | 1/1/2000 |
| BPRR | Buffalo and Pittsburgh | Short Lines | 153 | 453 | 1/1/2000 |
| BR | Buffalo and Pittsburgh | Short Lines | 74 | 208 | 1/1/2000 |
| BSOR | Buffalo Southern | Short Lines | 17 | 14 | 1/1/2000 |
| BJRY | Burlington Junction Railway | Short Lines | 47 | 0 | 1/1/2000 |
| CNUR | C and NC Railroad Corporation | Short Lines | 8 | 3 | 1/1/2000 |
| MD | C&J RAILROAD COMPANY D/B/A MISSISSIPPI DELTA RAILROAD | Short Lines | 2 | 3 | 1/1/2000 |
| CVRY | Caddo Valley Railroad Company | Short Lines | 3 | 0 | 7/5/2009 |
| CWCY | Caldwell Country Railroad | Short Lines | 2 | 0 | 1/1/2000 |
| CFNR | California Northern | Short Lines | 35 | 2 | 1/1/2000 |
| CNRR | California Northern Railroad | Short Lines | 2 | 0 | 11/20/2014 |
| CSP | Camas Prairie RailNet Incorporated | Short Lines | 8 | 21 | 1/1/2000 |
| CSR | Camden & Southern Railroad Inc | Short Lines | 4 | 1 | 1/1/2000 |
| CCRA | Camp Chase Industrial Railroad | Short Lines | 6 | 0 | 1/1/2000 |
| CAMY | CAMP CHASE RAILWAY COMPANY, LLC | Short Lines | 3 | 58 | 11/6/2016 |
| CNRX | Canadian Northern Railway LLC | Short Lines | 0 | 2 | 2/17/2011 |
| BCRY | Cando Contracting Limited (Barrie-Collingwood Railway) | Short Lines | 1 | 1 | 3/20/2013 |
| CFW | Caney fork & Western | Short Lines | 8 | 3 | 1/1/2000 |
| CFWR | Caney Fork and Western Railroad | Short Lines | 11 | 221 | 1/1/2000 |
| CTN | Canton Railroad Company | Short Lines | 19 | 20 | 1/1/2000 |
| CBNS | Cape Breton & Central Nova Scotia Ry | Short Lines | 35 | 22 | 1/1/2000 |
| CCH | Cape Cod & Hyannis | Short Lines | 20 | 4 | 1/1/2000 |
| CCCR | Cape Cod Central Railroad | Short Lines | 9 | 6 | 4/3/2011 |
| CF | Cape Fear Railways Incorporated | Short Lines | 3 | 4 | 1/1/2000 |
| CMSL | Cape May Seashore Line | Short Lines | 11 | 17 | 1/1/2000 |
| CBC | Carbon County Railway | Short Lines | 3 | 4 | 6/7/2009 |
| CTRW | Carlton Trail Railway Company | Short Lines | 7 | 5 | 1/1/2000 |
| CLNA | Carolina Coastal Railway Incorporated | Short Lines | 29 | 40 | 7/8/2007 |
| CPDR | Carolina Piedmont | Short Lines | 17 | 0 | 1/1/2000 |
| CRS | Carolina Rail Service | Short Lines | 3 | 2 | 1/1/2000 |
| CALA | Carolina Southern | Short Lines | 13 | 8 | 1/1/2000 |
| CARR | Carrollton Railroad | Short Lines | 2 | 0 | 1/1/2000 |
| CSCD | Cascade and Columbia River Railroad Company | Short Lines | 7 | 5 | 1/1/2000 |
| CIC | Cedar Rapids & Iowa City | Short Lines | 70 | 316 | 1/1/2000 |
| CCT | Central California Traction Company | Short Lines | 23 | 13 | 1/1/2000 |
| CQPA | Central Columbiana & Pennsylvania RR | Short Lines | 6 | 0 | 1/1/2000 |
| CIRY | Central Illinois Railroad Company | Short Lines | 6 | 0 | 11/29/2007 |
| CEIW | Central Indiana and Western RR Company | Short Lines | 7 | 1 | 3/18/2008 |
| CKRY | Central Kansas Railway Incorporated | Short Lines | 32 | 18 | 1/1/2000 |
| CMQ | CENTRAL MAINE & QUEBEC RAILWAY | Short Lines | 22 | 88 | 8/31/2014 |
| CEMR | Central Manitoba Railway Incorporated | Short Lines | 13 | 8 | 1/1/2000 |
| CMGN | Central Michigan RR | Short Lines | 25 | 3 | 1/1/2000 |
| CM | Central Montana Rail Incorporated | Short Lines | 11 | 8 | 1/1/2000 |
| CNZR | Central New England | Short Lines | 10 | 7 | 1/1/2000 |
| CNYK | Central New York Locomotive Company | Short Lines | 2 | 0 | 5/28/2007 |
| CORP | Central Oregon & Pacific | Short Lines | 91 | 54 | 1/1/2000 |
| CIND | Central RR of Indiana | Short Lines | 21 | 4 | 1/1/2000 |
| CERA | Central RR of Indianapolis | Short Lines | 16 | 2 | 1/1/2000 |
| CGR | CG Railway, Inc | Short Lines | 0 | 46 | 1/1/2000 |
| CGNE | Champagne Railroad Incorporated | Short Lines | 0 | 1 | 1/1/2000 |
| CCRY | Charles City Rail Lines Incorporated | Short Lines | 1 | 0 | 2/29/2008 |
| CHS | Charlotte Southern | Short Lines | 6 | 8 | 1/1/2000 |
| CHAT | Chattahoochee & Gulf | Short Lines | 7 | 3 | 1/1/2000 |
| LNAC | Chattahoochee Bay Railroad, LLC | Short Lines | 12 | 68 | 1/1/2000 |
| CIRR | Chattahoochee Industrial Railroad | Short Lines | 27 | 633 | 1/1/2000 |
| CHV | Chattahoochee Valley Ry | Short Lines | 6 | 8 | 1/1/2000 |
| CCKY | Chattooga & Chickamauga Railway | Short Lines | 6 | 3 | 1/1/2000 |
| CFMG | Chemin De Fer De La Matapedia Et Du Golf | Short Lines | 9 | 11 | 1/1/2000 |
| CA | Chesapeake & Albemarle | Short Lines | 18 | 7 | 1/1/2000 |
| CHRR | Chesapeake Railroad Company | Short Lines | 0 | 4 | 6/24/2008 |
| CKIN | Chesapeke & Indiana | Short Lines | 11 | 1 | 2/5/2007 |
| CHR | Chestnut Ridge Railway Company | Short Lines | 4 | 0 | 1/1/2000 |
| CIW | Chicago & Illinois Western | Short Lines | 11 | 2 | 1/1/2000 |
| CIM | Chicago And Illinois Midland | Short Lines | 65 | 49 | 1/1/2000 |
| CHTT | Chicago Heights Terminal Transfer | Short Lines | 2 | 2900 | 1/1/2000 |
| CSL | Chicago Short Line Railway Company | Short Lines | 27 | 29 | 1/1/2000 |
| CSS | Chicago South Shore And South Bend | Short Lines | 189 | 665 | 1/1/2000 |
| CCUO | Chicago-Chemung Railroad Corporation | Short Lines | 1 | 0 | 3/16/2008 |
| CBRM | Chillicothe-Brunswick Rail Maintenance | Short Lines | 3 | 3 | 1/1/2000 |
| CVR | Cimarron Valley Railroad L.C. | Short Lines | 20 | 3 | 1/1/2000 |
| CT | City of Columbia d/b/a Columbia Terminal | Short Lines | 9 | 7 | 1/1/2000 |
| COP | City of Prineville Railway | Short Lines | 8 | 139 | 1/1/2000 |
| TRMW | City of Tacoma d/b/a Tacoma Rail Mountai | Short Lines | 14 | 1 | 1/1/2000 |
| CCRR | Claremont Concord | Short Lines | 12 | 7 | 1/1/2000 |
| CLP | Clarendon and Pittsford | Short Lines | 10 | 4 | 1/1/2000 |
| CCRL | Cleveland Commercial RR | Short Lines | 4 | 0 | 8/24/2011 |
| CHB | Cleveland Harbor Belt | Short Lines | 1 | 0 | 8/31/2012 |
| CTR | Clinton Terminal Railroad Company | Short Lines | 7 | 16 | 1/1/2000 |
| CTRR | Cloquet Terminal Railroad Company | Short Lines | 6 | 42 | 1/1/2000 |
| CMC | CMC Railroad Incorporated | Short Lines | 4 | 0 | 5/17/2008 |
| CRLE | Coe Rail Incorporated | Short Lines | 8 | 1403 | 1/1/2000 |
| CW | Colorado and Wyoming | Short Lines | 27 | 501 | 1/1/2000 |
| CLC | Columbia and Cowlitz Railway Company | Short Lines | 21 | 242 | 1/1/2000 |
| CLSL | Columbia and Silver Creek Railroad | Short Lines | 3 | 0 | 6/21/2007 |
| CBRW | Columbia Basin Railroad | Short Lines | 26 | 43 | 1/1/2000 |
| CAGY | Columbus & Greenville Railway | Short Lines | 67 | 445 | 1/1/2000 |
| CUOH | Columbus and Ohio River Railroad Company | Short Lines | 0 | 210 | 1/1/2000 |
| CWRY | Commonwealth Railway Inc. | Short Lines | 8 | 1 | 1/1/2000 |
| COEH | Conecuh Valley Railroad | Short Lines | 10 | 554 | 1/1/2000 |
| CBL | Conemaugh and Black Lick Railroad | Short Lines | 16 | 6 | 1/1/2000 |
| CCCL | Connecticut Central Railroad Company | Short Lines | 6 | 4 | 1/1/2000 |
| CSOR | Connecticut Southern | Short Lines | 26 | 2 | 1/1/2000 |
| CACV | Cooperstown and Charlotte Valley | Short Lines | 12 | 36 | 1/1/2000 |
| CPMY | Coopersville & Marne Railway | Short Lines | 7 | 20 | 5/21/2009 |
| CBR | Coos Bay Rail Link | Short Lines | 13 | 1 | 1/3/2012 |
| CBRY | Copper Basin Railway | Short Lines | 24 | 183 | 1/1/2000 |
| CBGR | Council Bluffs Railway Company/Great Wes | Short Lines | 4 | 0 | 1/1/2000 |
| COER | Crab Orchard & Egyptian | Short Lines | 7 | 3504 | 1/1/2000 |
| CYCY | Crystal City Railroad Incorporated | Short Lines | 2 | 0 | 5/6/2010 |
| CWR | CWR Incorporated | Short Lines | 23 | 19 | 3/31/2007 |
| DAIR | D and I Railroad Company | Short Lines | 40 | 5 | 1/1/2000 |
| DMVW | Dakota Missouri Valley and Western Railr | Short Lines | 46 | 31 | 1/1/2000 |
| DN | Dakota Northern Railroad Inc | Short Lines | 1 | 0 | 1/16/2013 |
| DAKR | Dakota Rail Incorporated | Short Lines | 8 | 5 | 1/1/2000 |
| DAKS | Dakota Short Line | Short Lines | 1 | 0 | 6/1/2013 |
| DSRC | Dakota Southern Railway Company | Short Lines | 14 | 503 | 1/1/2000 |
| DGNO | Dallas Garland & Northeastern | Short Lines | 60 | 38 | 1/1/2000 |
| DMM | Dansville and Mount Morris Railroad Comp | Short Lines | 3 | 214 | 1/1/2000 |
| DR | Dardanelle and Russellville Railroad Inc | Short Lines | 39 | 14 | 1/1/2000 |
| DRI | Davenport Rock Island and North Western | Short Lines | 22 | 5 | 1/1/2000 |
| DQE | De Queen and Eastern Railroad Incorporat | Short Lines | 11 | 6 | 1/1/2000 |
| DJRR | Decatur Junction | Short Lines | 0 | 1 | 1/1/2000 |
| DT | Decatur Junction Railway Company | Short Lines | 5 | 4 | 1/1/2000 |
| DCLR | Delaware Coast Line RR Co | Short Lines | 15 | 15 | 7/15/2007 |
| DO | Delaware Otsego | Short Lines | 2 | 1 | 1/1/2000 |
| DV | Delaware Valley Railway Company | Short Lines | 5 | 0 | 8/27/2008 |
| DL | Delaware-Lackawanna Railroad Company | Short Lines | 77 | 40 | 1/1/2000 |
| DSRR | Delta Southern RR | Short Lines | 17 | 1 | 1/1/2000 |
| DVS | Delta Valley and Southern Railway Compan | Short Lines | 2 | 10 | 1/1/2000 |
| DRIR | Denver Rock Island Railroad | Short Lines | 9 | 2 | 3/5/2007 |
| DLWR | Depew Lancaster and Western Railroad Com | Short Lines | 6 | 32 | 1/1/2000 |
| DCFB | Dodge City Ford and Bucklin Railroad Com | Short Lines | 5 | 4 | 1/1/2000 |
| DCRR | Dubois County Railroad | Short Lines | 3 | 3 | 11/26/2008 |
| DNE | Duluth and Northeastern Railroad Company | Short Lines | 11 | 10 | 1/1/2000 |
| DGVR | DURBIN & GREENBRIER VALLEY RAILROAD INC | Short Lines | 26 | 26 | 1/17/2008 |
| DRHY | Durham Transport Incorporated | Short Lines | 1 | 2 | 5/28/2009 |
| ENR | E and N Railway Company Limited | Short Lines | 3 | 8 | 1/1/2000 |
| EACH | East Camden and Highland | Short Lines | 9 | 11 | 1/1/2000 |
| ECTB | East Chattanooga Belt Railway Co | Short Lines | 1 | 0 | 5/11/2011 |
| ECBR | East Cooper and Berkeley Railroad Company | Short Lines | 7 | 0 | 8/10/2007 |
| EEC | East Erie Commercial Railroad | Short Lines | 9 | 3179 | 1/1/2000 |
| ESPN | East Penn Railroad | Short Lines | 26 | 5 | 8/24/2009 |
| EPRY | East Penn Railway | Short Lines | 12 | 9 | 1/1/2000 |
| EARY | Eastern Alabama Railway | Short Lines | 17 | 0 | 1/1/2000 |
| EBGR | Eastern Berks Gateway Railroad | Short Lines | 4 | 7 | 6/7/2016 |
| EIRR | Eastern Idaho Railroad Incorporated | Short Lines | 34 | 8 | 1/1/2000 |
| EIRC | Eastern Illinois Railroad Company | Short Lines | 6 | 0 | 1/1/2000 |
| EMRY | Eastern Maine Railway Company | Short Lines | 4 | 68 | 10/10/2012 |
| ESHR | Eastern Shore Railroad | Short Lines | 12 | 12 | 1/1/2000 |
| ETRY | Eastern TN Railway | Short Lines | 6 | 0 | 1/1/2000 |
| EFRX | Eastside Freight Railroad | Short Lines | 1 | 0 | 7/10/2011 |
| EFRR | Effingham Railroad | Short Lines | 2 | 0 | 1/1/2000 |
| EDW | El Dorado and Wesson Railway Company | Short Lines | 9 | 0 | 4/10/2007 |
| ELKR | Elk River Railroad Incorporated | Short Lines | 6 | 0 | 1/1/2000 |
| EWR | Elkhart & Western Railroad Co. | Short Lines | 3 | 0 | 2/23/2011 |
| EE | Ellis and Eastern Company | Short Lines | 12 | 12 | 1/1/2000 |
| ELS | Escanaba and Lake Superior Railroad Comp | Short Lines | 41 | 168 | 1/1/2000 |
| ETL | Essex Terminal Railway Company | Short Lines | 12 | 6 | 1/1/2000 |
| ESNA | Eureka Springs and North Arkansas | Short Lines | 8 | 10 | 1/1/2000 |
| EVWR | Evansville Western Railroad Inc | Short Lines | 29 | 1 | 1/1/2000 |
| EV | Everett Railroad | Short Lines | 21 | 34 | 1/1/2000 |
| FRR | Falls Road Railroad Company Incorporated | Short Lines | 4 | 62 | 8/29/2007 |
| FMRC | FarmRail | Short Lines | 42 | 2 | 1/1/2000 |
| FSRR | FerroSur | Short Lines | 175 | 750 | 1/1/2000 |
| FLR | Fife Lake Railway | Short Lines | 1 | 1 | 1/1/2000 |
| FWRY | Fillmore Western Railway Company | Short Lines | 10 | 6 | 1/1/2000 |
| FGLK | Finger Lakes Railway | Short Lines | 29 | 254 | 1/1/2000 |
| FCRD | First Coast Railway | Short Lines | 4 | 227 | 1/1/2000 |
| FIR | Flats Industrial Railroad Company | Short Lines | 3 | 0 | 11/24/2007 |
| FCEN | Florida Central | Short Lines | 39 | 51 | 1/1/2000 |
| FMID | Florida Midland Railroad Company Incorpo | Short Lines | 7 | 1 | 1/1/2000 |
| FNOR | Florida Northern | Short Lines | 1 | 0 | 1/1/2000 |
| FWCR | Florida West Coast Railroad Incorporated | Short Lines | 5 | 9 | 1/1/2000 |
| FRVT | Fore River Transportation Corporation | Short Lines | 9 | 2 | 2/22/2009 |
| FDDM | Fort Dodge Des Moines & Southern | Short Lines | 30 | 202 | 1/1/2000 |
| FSR | Fort Smith Railroad Company | Short Lines | 11 | 47 | 1/1/2000 |
| FWWR | Fort Worth and Western | Short Lines | 63 | 15 | 1/1/2000 |
| FEVR | Fremont & Elkhorn Valley Railroad | Short Lines | 2 | 6 | 1/1/2000 |
| FCR | Fulton County Railraod | Short Lines | 5 | 1 | 1/1/2000 |
| FC | Fulton County Railroad Incorporated | Short Lines | 8 | 7 | 1/1/2000 |
| AG | Galveston Railroad L.P. | Short Lines | 8 | 7 | 10/8/2009 |
| GVSR | Galveston Railroad L.P. | Short Lines | 11 | 595 | 1/1/2000 |
| VCY | Galveston Railroad, L.P. | Short Lines | 9 | 154 | 1/1/2000 |
| GWF | Galveston Wharves | Short Lines | 2 | 2 | 6/7/2009 |
| GCW | Garden City Western Railway Company | Short Lines | 11 | 0 | 1/1/2000 |
| GRW | Gary Railway | Short Lines | 24 | 1953 | 3/26/2009 |
| GWWE | Gateway Eastern Railway Company | Short Lines | 1 | 0 | 1/1/2000 |
| GRIV | Gauley River Railroad LLC | Short Lines | 2 | 0 | 1/1/2000 |
| GNWR | Genesee and Wyoming Railroad Company | Short Lines | 40 | 1409 | 1/1/2000 |
| GCK | Georges Creek Railway | Short Lines | 8 | 0 | 7/1/2009 |
| GRR | Georgetown Railroad Company | Short Lines | 35 | 46 | 1/1/2000 |
| GAAB | Georgia and Alabama Division South Carolina Central Railroad | Short Lines | 4 | 1 | 1/1/2000 |
| GFRR | Georgia and Florida Railnet | Short Lines | 38 | 120 | 1/1/2000 |
| GC | Georgia Central | Short Lines | 107 | 17 | 1/1/2000 |
| GGS | Georgia Great Southern Division South Carolina Central Railro | Short Lines | 1 | 0 | 5/16/2008 |
| GMR | Georgia Midland | Short Lines | 6 | 0 | 1/1/2000 |
| GNRR | Georgia Northeastern | Short Lines | 20 | 413 | 1/1/2000 |
| GSWR | Georgia Southwestern | Short Lines | 50 | 16 | 1/1/2000 |
| GWRC | Georgia Woodlands | Short Lines | 3 | 1 | 1/1/2000 |
| GETY | Gettysburg Railroad | Short Lines | 14 | 22 | 1/1/2000 |
| GBRY | Gettysburg Railway. | Short Lines | 5 | 4 | 7/15/2007 |
| GS | Gloster Southern | Short Lines | 3 | 7 | 1/1/2000 |
| GLSR | Gloster Southern Railroad Corporation | Short Lines | 3 | 3 | 1/1/2000 |
| GEXR | Goderich & Exeter | Short Lines | 33 | 5 | 1/1/2000 |
| GITM | Golden Isle Terminal RR | Short Lines | 2 | 1 | 1/1/2000 |
| CISD | Golden Isles Terminal Railroad | Short Lines | 3 | 1 | 1/1/2000 |
| GTRA | Golden Triangle Railroad | Short Lines | 3 | 229 | 1/1/2000 |
| GU | Grafton and Upton Railroad Company | Short Lines | 22 | 2 | 1/1/2000 |
| GNBC | Grainbelt Corporation | Short Lines | 32 | 235 | 1/1/2000 |
| GCRY | Grand Canyon Railway | Short Lines | 22 | 75 | 1/1/2000 |
| GFR | Grand Forks Railway Company | Short Lines | 1 | 0 | 11/24/2009 |
| GR | Grand Rapids Eastern Railroad Incorporated | Short Lines | 4 | 5 | 1/1/2000 |
| TSBY | Great Lakes Central Railroad | Short Lines | 22 | 201 | 1/1/2000 |
| GMRY | Great Miami | Short Lines | 13 | 17 | 1/1/2000 |
| GTR | Great River Railroad; d/b/a Rosedale-Bolivar County Port Comm | Short Lines | 6 | 3 | 4/20/2008 |
| GRWR | Great Walton | Short Lines | 9 | 1 | 1/1/2000 |
| GWRR | Great Walton Railroad | Short Lines | 10 | 1 | 1/1/2000 |
| GWRS | Great Western Railway Company | Short Lines | 6 | 21 | 4/11/2011 |
| GWR | Great Western Railway Company | Short Lines | 57 | 18 | 1/1/2000 |
| GBW | Green Bay & Western | Short Lines | 47 | 126 | 1/1/2000 |
| GRLW | Greenville & Western Railway Company, LLC | Short Lines | 6 | 9 | 11/5/2007 |
| GRYR | Grenada Railway | Short Lines | 14 | 12 | 8/24/2009 |
| GO | Gulf and Ohio | Short Lines | 47 | 11 | 1/1/2000 |
| GCSR | Gulf Colorado and San Saba Railway | Short Lines | 6 | 0 | 1/1/2000 |
| HS | H and S Railroad Company | Short Lines | 5 | 2688 | 1/1/2000 |
| FRDN | H and S Railroad Company Incorporated | Short Lines | 2 | 8 | 11/23/2007 |
| HIRR | Hainesport Industrial Railroad | Short Lines | 0 | 67 | 3/1/2009 |
| HB | Hampton and Branchville | Short Lines | 16 | 3 | 1/1/2000 |
| HLSC | Hampton Railway Incorporated | Short Lines | 1 | 295 | 1/1/2000 |
| HBL | Harbor Belt Line | Short Lines | 1 | 0 | 1/1/2000 |
| CVYR | Hargraves & McCrary, P.A. | Short Lines | 1 | 0 | 1/1/2000 |
| HRT | Hartwell RR | Short Lines | 30 | 5 | 1/1/2000 |
| HOG | Heart of Georgia | Short Lines | 21 | 3 | 1/1/2000 |
| HRS | Holidaysburg and Roaring Spring Railroad Company | Short Lines | 1 | 6 | 1/1/2000 |
| HE | Hollis and Eastern Railroad Company | Short Lines | 5 | 49 | 1/1/2000 |
| HRR | Hondo Railroad | Short Lines | 2 | 0 | 1/1/2000 |
| HCRR | Honey Creek Railroad Incorporated | Short Lines | 2 | 0 | 6/10/2013 |
| HOS | Hoosier Southern Railroad | Short Lines | 6 | 4 | 1/1/2000 |
| HRRC | Housatonic Railroad Company | Short Lines | 12 | 11 | 1/1/2000 |
| HBT | Houston Belt & Terminal | Short Lines | 28 | 2 | 1/1/2000 |
| HBRY | Hudson Bay Railway Company | Short Lines | 47 | 5 | 1/1/2000 |
| HMCR | Huntsville and Madison County Railroad Authority | Short Lines | 9 | 0 | 1/1/2000 |
| HESR | Huron and Eastern | Short Lines | 58 | 99 | 1/1/2000 |
| HCRY | Huron Central Railway | Short Lines | 14 | 173 | 1/1/2000 |
| HN | Hutchinson and Northern Railway Company | Short Lines | 7 | 4 | 1/1/2000 |
| INPR | Idaho Northern and Pacific Railroad | Short Lines | 24 | 25 | 1/1/2000 |
| IMRR | Illinois Midland Railroad | Short Lines | 19 | 15 | 1/1/2000 |
| IR | Illinois Railnet | Short Lines | 41 | 14 | 1/1/2000 |
| IW | Illinois Western | Short Lines | 4 | 3 | 1/1/2000 |
| ILW | Illinois Western Railroad | Short Lines | 1 | 0 | 10/17/2010 |
| ICRK | Indian Creek Railroad Company | Short Lines | 2 | 0 | 2/1/2008 |
| IORY | Indiana & Ohio | Short Lines | 144 | 118 | 1/1/2000 |
| IOCR | Indiana and Ohio Central Railroad | Short Lines | 0 | 42 | 1/1/2000 |
| INOH | Indiana and Ohio Railroad Incorporated | Short Lines | 1 | 3 | 5/4/2011 |
| IHRC | Indiana Hi Rail | Short Lines | 34 | 11 | 1/1/2000 |
| IN | Indiana Northeastern | Short Lines | 21 | 10 | 1/1/2000 |
| CMR | Indiana Rail Road Company | Short Lines | 6 | 5 | 8/20/2008 |
| ISRR | Indiana Southern | Short Lines | 44 | 3 | 1/1/2000 |
| IBT | International Bridge and Terminal Company | Short Lines | 0 | 1303 | 1/1/2000 |
| IIC | International Intermodal Center | Short Lines | 2 | 0 | 1/1/2000 |
| IRRS | International Rail Road Systems Incorporated | Short Lines | 1 | 0 | 11/24/2009 |
| IANR | Iowa Northern Ry | Short Lines | 63 | 797 | 1/1/2000 |
| IANW | Iowa Northwestern | Short Lines | 4 | 8 | 1/1/2000 |
| IARR | Iowa River RR | Short Lines | 3 | 1 | 4/22/2007 |
| IAT | IOWA TRACTION RAILROAD CO | Short Lines | 1 | 2 | 7/8/2010 |
| IATR | Iowa Traction Railroad Company | Short Lines | 14 | 318 | 1/1/2000 |
| CUVA | ISG Cleveland Works Railway Company | Short Lines | 22 | 21 | 1/1/2000 |
| JJRD | J and J Railroad Incorporated | Short Lines | 0 | 3 | 3/23/2008 |
| JSRC | Jackson and Southern Railroad Company | Short Lines | 1 | 0 | 1/1/2000 |
| JEFW | Jefferson Warrior Railroad Company | Short Lines | 5 | 11 | 1/1/2000 |
| JCAX | Johnson County Airport Commission | Short Lines | 2 | 0 | 8/16/2016 |
| JTCX | Juniata Terminal | Short Lines | 9 | 11 | 1/6/2008 |
| JVRR | Juniata Valley Railroad Company | Short Lines | 1 | 2 | 7/2/2008 |
| KLSC | Kalamazoo Lake Shore and Chicago Railway | Short Lines | 6 | 8 | 1/1/2000 |
| WNFR | Kanawha Rail Corporation | Short Lines | 2 | 171 | 1/1/2000 |
| KBSR | Kankakee Beaverville and Southern Railroad Company | Short Lines | 17 | 312 | 1/1/2000 |
| KO | Kansas & Oklahoma | Short Lines | 11 | 237 | 1/1/2000 |
| KSW | Kansas Southwestern Railway | Short Lines | 14 | 2 | 1/1/2000 |
| KPR | Kelowna Pacific Railway Ltd. | Short Lines | 0 | 3 | 9/12/2010 |
| KT | Kentucky and Tennessee Railway Company | Short Lines | 10 | 10 | 1/1/2000 |
| KJRY | Keokuk Junction | Short Lines | 17 | 23 | 1/1/2000 |
| KFR | Kettle Falls International Rwy | Short Lines | 4 | 0 | 1/1/2000 |
| KRR | Kiamichi | Short Lines | 59 | 42 | 1/1/2000 |
| WVN | Kingswood Northern Incorporated d/b/a West Virginia Northern | Short Lines | 6 | 3 | 1/1/2000 |
| KJR | Kiski Junction Railroad | Short Lines | 10 | 11 | 1/1/2000 |
| KKRR | Knox and Kane Railroad Company | Short Lines | 13 | 39 | 1/1/2000 |
| LXOH | Knoxville & Holston River Railroad | Short Lines | 2 | 47 | 1/1/2000 |
| MSDR | Knoxville & Holston River Railroad | Short Lines | 8 | 226 | 1/1/2000 |
| AGLF | Knoxville & Holston River Railroad | Short Lines | 28 | 27 | 1/1/2000 |
| KXHR | Knoxville & Holston River RR | Short Lines | 40 | 48 | 1/1/2000 |
| KSRY | Kosciusko & Southwestern Railway | Short Lines | 3 | 11 | 1/1/2000 |
| KWT | KWT Railway | Short Lines | 11 | 171 | 1/1/2000 |
| KYLE | Kyle Railroad | Short Lines | 101 | 456 | 1/1/2000 |
| LVAL | Lackawanna Valley Railroad Corporation | Short Lines | 7 | 2 | 5/14/2007 |
| LCR | Lake County Railroad | Short Lines | 1 | 0 | 1/1/2000 |
| LEN | Lake Erie and Northern Railway Company | Short Lines | 1 | 1 | 5/12/2009 |
| LEF | Lake Erie Franklin and Clarion Railroad Company | Short Lines | 1 | 7 | 1/1/2000 |
| LSRC | Lake State Railway Company | Short Lines | 82 | 157 | 1/1/2000 |
| LSI | Lake Superior and Ishpeming Railroad | Short Lines | 70 | 945 | 1/1/2000 |
| LT | Lake Terminal Railroad Company | Short Lines | 8 | 303 | 1/1/2000 |
| LVRC | Lamoille Valley | Short Lines | 9 | 73 | 1/1/2000 |
| LC | Lancaster & Chester | Short Lines | 48 | 68 | 1/1/2000 |
| AMHR | Landisville Railroad Incorporated | Short Lines | 5 | 1 | 5/3/2010 |
| LIRX | Lapeer Industrial Railway | Short Lines | 4 | 1 | 1/1/2000 |
| LRS | Laurinburg and Southern | Short Lines | 48 | 3257 | 1/1/2000 |
| LRWY | Lehigh Railway | Short Lines | 8 | 0 | 3/13/2009 |
| LVRM | Lehigh Valley Rail Management | Short Lines | 15 | 0 | 5/6/2010 |
| LINC | Lewis and Clark Railway Company | Short Lines | 6 | 6 | 11/24/2008 |
| LKRR | Little Kanawha River Rail Incorporated | Short Lines | 2 | 0 | 1/1/2000 |
| LRR | Little River Railroad | Short Lines | 6 | 15 | 1/1/2000 |
| LRWN | Little Rock & Western | Short Lines | 11 | 239 | 1/1/2000 |
| LAL | Livonia Avon & Lakeville | Short Lines | 22 | 13 | 1/1/2000 |
| LER | Logansport and Eel River Short-Line Company Incorporated | Short Lines | 4 | 0 | 1/1/2000 |
| LHRR | Longhorn Railroad | Short Lines | 13 | 3 | 1/1/2000 |
| LPN | Longview, Portland & Northern | Short Lines | 7 | 25 | 1/1/2000 |
| LAJ | Los Angeles Junction Railway | Short Lines | 14 | 1 | 1/1/2000 |
| LNW | Louisiana & Northwestern | Short Lines | 25 | 10 | 1/1/2000 |
| LDRR | Louisiana and Delta Railroad Incorporated | Short Lines | 34 | 1 | 1/1/2000 |
| LIRC | Louisville & Indiana | Short Lines | 49 | 13 | 1/1/2000 |
| LW | Louisville and Wadley Railway Company | Short Lines | 8 | 1352 | 1/1/2000 |
| LNAL | Louisville New Albany and Corydon Railroad | Short Lines | 5 | 13 | 7/24/2007 |
| LBR | Lowville and Beaver River Railroad Compa | Short Lines | 6 | 374 | 1/1/2000 |
| LXVR | Luxapalia Valley | Short Lines | 2 | 0 | 1/1/2000 |
| LS | Luzerne And Susquehanna | Short Lines | 25 | 4 | 1/1/2000 |
| LVRR | Lycoming Valley | Short Lines | 17 | 141 | 1/1/2000 |
| MNBR | M and B Railroad LLC | Short Lines | 23 | 0 | 1/1/2000 |
| MTCO | Macon Terminal Company | Short Lines | 3 | 0 | 5/18/2008 |
| CMPA | Madison Railroad Division of City of Mad | Short Lines | 8 | 2 | 1/1/2000 |
| MAEG | Maersk Sealand | Short Lines | 0 | 74 | 1/1/2000 |
| MAA | Magma Arizona Railroad Company | Short Lines | 10 | 4 | 1/1/2000 |
| MVRY | Mahoning Valley Ry | Short Lines | 4 | 233 | 1/1/2000 |
| MJ | Manufacturers'' Junction Railway Company | Short Lines | 5 | 4 | 1/1/2000 |
| MIRS | Mare Island Rail Service | Short Lines | 1 | 0 | 8/9/2011 |
| MOT | Marine Oil Transportation | Short Lines | 0 | 5 | 5/4/2008 |
| MQT | Marquette Rail | Short Lines | 21 | 286 | 1/1/2000 |
| MDDE | Maryland and Delaware Railroad | Short Lines | 16 | 6 | 1/1/2000 |
| MPA | Maryland and Pennsylvania Railroad | Short Lines | 14 | 57 | 1/1/2000 |
| MMID | Maryland Midland | Short Lines | 35 | 145 | 1/1/2000 |
| MC | Mass Coastal | Short Lines | 23 | 10 | 1/1/2000 |
| MCER | Massachusetts Central Railroad | Short Lines | 18 | 11 | 1/1/2000 |
| MSTR | Massena Terminal Railroad Company | Short Lines | 5 | 0 | 1/1/2000 |
| MAW | Maumee and Western Railroad Corporation | Short Lines | 5 | 0 | 1/1/2000 |
| MCR | McCloud Railway Company | Short Lines | 19 | 4 | 1/1/2000 |
| MR | McCloud Railway Company | Short Lines | 11 | 239 | 1/1/2000 |
| MSN | Meeker Southern | Short Lines | 1 | 1 | 1/1/2000 |
| MB | Meridian & Bigbee | Short Lines | 32 | 256 | 1/1/2000 |
| MDS | Meridian Southern Railway, LLC | Short Lines | 21 | 8 | 1/1/2000 |
| MGRI | MG Rail Incorporated | Short Lines | 10 | 0 | 1/1/2000 |
| MAL | Michigan Air-Line Ry. Co. | Short Lines | 2 | 0 | 7/21/2011 |
| MS | Michigan Shore Railroad Incorporated | Short Lines | 6 | 44 | 1/1/2000 |
| MSO | Michigan Southern | Short Lines | 9 | 6 | 1/1/2000 |
| MMRR | Mid-Michigan Railroad Incorporated | Short Lines | 15 | 32 | 1/1/2000 |
| MNJ | Middletown & New Jersey Railroad | Short Lines | 8 | 11 | 1/1/2000 |
| MIDH | Middletown and Hummelstown RR Company | Short Lines | 6 | 11 | 1/1/2000 |
| MCTA | Minnesota Central Railroad Company | Short Lines | 5 | 1 | 5/19/2013 |
| MDW | Minnesota Dakota and Western Railway Com | Short Lines | 13 | 661 | 1/1/2000 |
| MNN | Minnesota Northern Railroad Incorporated | Short Lines | 17 | 10 | 1/1/2000 |
| MPLI | Minnesota Prairie Line, Inc | Short Lines | 2 | 91 | 1/1/2000 |
| MSWY | Minnesota Western RR | Short Lines | 4 | 2 | 5/10/2007 |
| MSV | Mississippi and Skuna Valley Railroad Co | Short Lines | 4 | 26 | 1/1/2000 |
| MT | Mississippi and Tennessee RailNet Incorporated | Short Lines | 12 | 33 | 1/1/2000 |
| MSCI | Mississippi Central Railroad Company | Short Lines | 7 | 1 | 1/1/2000 |
| NTR | Mississippi Central Railroad Company | Short Lines | 2 | 0 | 11/12/2008 |
| MSE | Mississippi Export Railroad Company | Short Lines | 18 | 26 | 1/1/2000 |
| MTNR | Mississippi Tennessee Railroad LLC | Short Lines | 8 | 333 | 1/1/2000 |
| MSRW | Mississippian Railway Cooperative Incorporated | Short Lines | 5 | 3 | 1/1/2000 |
| MISS | Mississippian Railway Cooperative Incorporated | Short Lines | 2 | 11 | 1/1/2000 |
| MVP | Missouri & Valley Park | Short Lines | 1 | 0 | 1/1/2000 |
| MNA | Missouri and Northern Arkansas | Short Lines | 102 | 69 | 1/1/2000 |
| MOC | Missouri Central Railroad Company | Short Lines | 3 | 0 | 1/1/2000 |
| MRIX | Missouri North Centra RR | Short Lines | 27 | 1 | 6/6/2007 |
| MNC | Missouri North Central RR | Short Lines | 1 | 3 | 1/1/2000 |
| MGLX | Mobil Grain Ltd. | Short Lines | 10 | 310 | 8/6/2011 |
| MET | Modesto and Empire Traction Company | Short Lines | 24 | 134 | 1/1/2000 |
| MNRR | Modoc Northern Railroad Company | Short Lines | 17 | 15 | 1/1/2000 |
| MHC | Mohall Railroad Inc. | Short Lines | 0 | 1 | 1/1/2000 |
| MHWA | Mohawk Adirondack and Northern Railroad | Short Lines | 14 | 15 | 1/1/2000 |
| MCRR | Monongahela Connecting RR Company | Short Lines | 18 | 8 | 1/1/2000 |
| MWRR | Montana Western Railway Company Incorporated | Short Lines | 6 | 1 | 5/17/2007 |
| ME | Morristown & Erie Railroad | Short Lines | 62 | 110 | 1/1/2000 |
| MCSA | Moscow Camden and San Augustine Railroad | Short Lines | 8 | 89 | 1/1/2000 |
| MRI | Motive Rail Industries | Short Lines | 6 | 1 | 1/1/2000 |
| MH | Mount Hood Railroad | Short Lines | 11 | 22 | 1/1/2000 |
| MNL | Mountain Laurel | Short Lines | 5 | 0 | 1/1/2000 |
| MVT | Mt. Vernon Terminal | Short Lines | 8 | 0 | 2/24/2008 |
| NVRR | NAPA Valley Railroad Company | Short Lines | 11 | 17 | 7/16/2007 |
| NCYR | Nash County Railroad Corporation | Short Lines | 16 | 4 | 1/1/2000 |
| NWR | Nashville & Western Railroad Corp. | Short Lines | 6 | 35 | 1/1/2000 |
| NERR | Nashville and Eastern | Short Lines | 60 | 33 | 1/1/2000 |
| NAUG | Naugatuck Railroad Company | Short Lines | 7 | 9 | 1/1/2000 |
| NRI | Nebkota Railway Incorporated | Short Lines | 6 | 203 | 1/1/2000 |
| NCRC | Nebraska Central | Short Lines | 49 | 24 | 1/1/2000 |
| NENE | Nebraska Northeastern | Short Lines | 16 | 0 | 1/1/2000 |
| NNW | Nebraska Northwestern | Short Lines | 3 | 84 | 6/13/2011 |
| NKCR | Nebraska, Kansas & Colorado RailNet, Inc | Short Lines | 13 | 3111 | 1/1/2000 |
| SFEX | New Brunswick East Coast Railway | Short Lines | 4 | 0 | 12/28/2008 |
| NBEC | New Brunswick East Coast Railway Company | Short Lines | 31 | 26 | 1/1/2000 |
| NBSR | New Brunswick Southern Railway Company L | Short Lines | 57 | 73 | 1/1/2000 |
| NCIR | New Castle Industrial Railroad | Short Lines | 9 | 16 | 1/1/2000 |
| NECR | New England Central | Short Lines | 79 | 21 | 1/1/2000 |
| NEGS | New England Southern | Short Lines | 7 | 0 | 1/1/2000 |
| NHVT | New Hampshire and Vermont Railroad Company | Short Lines | 2 | 5 | 9/23/2007 |
| NHCR | New Hampshire Central Railroad | Short Lines | 4 | 2 | 9/8/2007 |
| NHN | New Hampshire Northcoast Corporation | Short Lines | 10 | 41 | 1/1/2000 |
| NHIR | New Hope & Ivyland | Short Lines | 28 | 44 | 1/1/2000 |
| NHRR | New Hope and Ivyland Rail Road | Short Lines | 11 | 34 | 1/15/2011 |
| NHVR | New Hope Valley Railroad | Short Lines | 11 | 4 | 1/1/2000 |
| NJRC | New Jersey Rail Carrier LLC | Short Lines | 0 | 27 | 1/1/2000 |
| NMGR | New Mexico Gateway Railroad LLC | Short Lines | 1 | 0 | 1/1/2000 |
| NOGC | New Orleans & Gulf Coast | Short Lines | 22 | 0 | 1/1/2000 |
| NOLR | New Orleans Lower Coast Railroad Incorpo | Short Lines | 6 | 1 | 1/1/2000 |
| NYA | New York and Atlantic Railroad | Short Lines | 17 | 2 | 1/1/2000 |
| NYGL | New York and Greenwood Lake Railroad | Short Lines | 8 | 14 | 1/1/2000 |
| NYLE | New York and Lake Erie Railroad Company | Short Lines | 17 | 12 | 2/16/2007 |
| NYOG | New York and Ogdensburg Railway Company Incorporated | Short Lines | 3 | 1 | 1/1/2000 |
| NYCH | New York Cross Harbor Railroad Terminal Corporation | Short Lines | 7 | 2 | 1/1/2000 |
| NSR | Newburgh and South Shore Railroad Compan | Short Lines | 2 | 30 | 1/1/2000 |
| NBNR | Nicolet Badger Northern Railroad | Short Lines | 0 | 1 | 1/26/2015 |
| NTRY | Nimishillen and Tuscarawas Railway Company | Short Lines | 2 | 0 | 4/27/2010 |
| NBER | Nittany and Bald Eagle Railroad Company | Short Lines | 8 | 12 | 1/1/2000 |
| NPBL | Norfolk and Portsmouth Belt Line | Short Lines | 35 | 3 | 1/1/2000 |
| NCVA | North Carolina and Virginia Railroad | Short Lines | 19 | 0 | 1/1/2000 |
| NCL | North Coast Lines | Short Lines | 1 | 3 | 5/19/2011 |
| NSHR | North Shore | Short Lines | 22 | 103 | 1/1/2000 |
| NSM | North Shore Mining | Short Lines | 27 | 0 | 1/1/2000 |
| NEKM | Northeast Kansas and Missouri | Short Lines | 6 | 0 | 1/1/2000 |
| NN | Northern Nevada Railroad Corporation | Short Lines | 13 | 54 | 1/1/2000 |
| NOW | Northern Ohio & Western | Short Lines | 1 | 1 | 1/1/2000 |
| NPR | Northern Plains Railroad Incorporated | Short Lines | 67 | 12 | 1/1/2000 |
| NOKL | Northwestern Oklahoma | Short Lines | 7 | 8938 | 1/1/2000 |
| NWP | Northwestern Pacific Railroad Company | Short Lines | 25 | 20 | 1/1/2000 |
| OTR | Oakland Terminal Railway | Short Lines | 3 | 0 | 1/1/2000 |
| OCTR | Octoraro Railway Incorporated | Short Lines | 5 | 2 | 1/19/2009 |
| OGEE | Ogeechee | Short Lines | 6 | 0 | 1/1/2000 |
| OHIC | Ohi-Rail Corporation | Short Lines | 16 | 3 | 1/1/2000 |
| OHPA | Ohio and Pennsylvania Railroad Company | Short Lines | 0 | 18 | 1/1/2000 |
| OHCR | Ohio Central | Short Lines | 210 | 139 | 1/1/2000 |
| OSRR | Ohio Southern Railroad Incorporated | Short Lines | 1 | 0 | 10/24/2009 |
| OCTL | Oil Creek and Titusville Lines | Short Lines | 4 | 34 | 1/1/2000 |
| OKAN | Okanagan Valley Railway Company | Short Lines | 4 | 0 | 1/1/2000 |
| OAR | Old Augusta Railroad | Short Lines | 2 | 215 | 1/1/2000 |
| OLYR | Olympic Railroad Company | Short Lines | 0 | 5 | 2/27/2008 |
| OLB | Omaha Lincoln and Beatrice Railway Company | Short Lines | 9 | 18 | 1/1/2000 |
| ONCT | Ontario Central Railroad Corporation | Short Lines | 2 | 2 | 9/23/2007 |
| OLO | Ontario LOrignal Railway Incorporated | Short Lines | 2 | 0 | 10/6/2011 |
| OMID | Ontario Midland Railroad Corporation | Short Lines | 9 | 7 | 1/1/2000 |
| OS | Ontario Southland Railway Inc. | Short Lines | 1 | 1 | 2/15/2012 |
| OSR | Ontario Southland Rwy | Short Lines | 36 | 8 | 1/1/2000 |
| OPT | Orange Port Terminal Railway | Short Lines | 18 | 2 | 1/21/2008 |
| OPR | Oregon Pacific | Short Lines | 17 | 7 | 1/1/2000 |
| OCRR | Ottawa Central Railway | Short Lines | 11 | 2 | 1/1/2000 |
| OTVR | Otter Tail Valley Railroad Company | Short Lines | 10 | 2 | 1/1/2000 |
| OVR | Otter Valley Railroad | Short Lines | 2 | 10 | 3/25/2008 |
| OUCH | Ouachita Railroad | Short Lines | 5 | 5 | 1/1/2000 |
| OHRY | Owego and Harford Railway Incorporated | Short Lines | 8 | 1 | 1/1/2000 |
| PR | Palmetto Railways | Short Lines | 11 | 6 | 4/12/2009 |
| PCC | Palouse River and Coulee City | Short Lines | 14 | 92 | 1/1/2000 |
| PNR | Panhandle Northern Railroad Company | Short Lines | 13 | 6 | 9/6/2007 |
| PBR | Patapsco and Back Rivers Railroad | Short Lines | 79 | 7 | 1/1/2000 |
| PRV | Pearl River Valley Railroad Company | Short Lines | 4 | 2 | 1/1/2000 |
| PVS | Pecos Valley Southern Railway Company | Short Lines | 3 | 1 | 1/1/2000 |
| PDRR | Pee Dee River RR | Short Lines | 7 | 109 | 1/1/2000 |
| POVA | Pend Oreille Valley Railroad | Short Lines | 11 | 16 | 1/1/2000 |
| PT | Peninsula Terminal Company | Short Lines | 11 | 11 | 1/1/2000 |
| PRL | Penn Eastern Rail Lines Incorporated | Short Lines | 9 | 29 | 1/1/2000 |
| LANO | Penn Eastern Rail Lines Incorporated | Short Lines | 1 | 1 | 9/19/2007 |
| BITY | Penn Eastern Rail Lines Incorporated | Short Lines | 3 | 1 | 9/15/2007 |
| CHTS | Penn Eastern Rail Lines Incorporated | Short Lines | 0 | 5 | 1/1/2000 |
| PJRL | Penn Jersey Rail Lines Incorporated | Short Lines | 0 | 1 | 1/1/2000 |
| PNRR | Pennsylvania Northeastern | Short Lines | 11 | 8 | 1/5/2011 |
| PWRY | Peoria & Western Railway | Short Lines | 7 | 0 | 4/30/2007 |
| PBNE | Philadelphia Bethlehem and New England R | Short Lines | 32 | 8 | 1/1/2000 |
| PICK | Pickens Railway | Short Lines | 22 | 36 | 1/1/2000 |
| PNRW | Piedmont Northern Railroad | Short Lines | 2 | 0 | 5/16/2011 |
| PBRR | Pine Belt Southern Railroad Company | Short Lines | 3 | 0 | 4/25/2008 |
| PF | Pioneer and Fayette Railroad Company | Short Lines | 2 | 0 | 1/1/2000 |
| PRY | Pioneer Industrial Railway | Short Lines | 2 | 0 | 1/1/2000 |
| PVRR | Pioneer Valley Railroad Company Incorporated | Short Lines | 13 | 8 | 1/1/2000 |
| PS | Pittsburg and Shawmut Railroad Company | Short Lines | 23 | 40 | 1/1/2000 |
| POHC | Pittsburgh & Ohio Central | Short Lines | 7 | 33 | 1/1/2000 |
| PWV | Pittsburgh & West Virginia | Short Lines | 7 | 6 | 1/1/2000 |
| PAM | Pittsburgh Allegheny and McKees Rocks Railroad Company | Short Lines | 6 | 7 | 1/1/2000 |
| PIR | Pittsburgh Industrial Railroad Incorpora | Short Lines | 2 | 0 | 1/1/2000 |
| PJRR | PJRR | Short Lines | 2 | 0 | 1/1/2000 |
| PLW | PL and W Railroad Incorporated | Short Lines | 4 | 2 | 1/27/2008 |
| PCN | Point Comfort and Northern Railway | Short Lines | 13 | 147 | 1/1/2000 |
| PVRX | Pook Valley Railroad (Private Owner) | Short Lines | 3 | 0 | 1/1/2000 |
| PBVR | Port Bienville Railroad | Short Lines | 5 | 0 | 1/1/2000 |
| PCHR | Port Colborne Harbour Railway | Short Lines | 4 | 0 | 1/1/2000 |
| PHRR | Port Harbor Railroad | Short Lines | 15 | 0 | 5/5/2011 |
| PHD | Port Huron and Detroit Railroad Company | Short Lines | 4 | 27 | 1/1/2000 |
| PJR | Port Jersey | Short Lines | 2 | 0 | 1/20/2008 |
| POTB | Port of Tillamook Bay | Short Lines | 28 | 40 | 1/1/2000 |
| PRI | Port Railroads Incorporated | Short Lines | 2 | 0 | 7/26/2007 |
| PRYL | Port Royal Railroad | Short Lines | 4 | 0 | 1/1/2000 |
| PTRR | Port Townsend Railroad Incorporated | Short Lines | 8 | 1 | 8/31/2008 |
| PNWR | Portland and Western Railroad Incorporat | Short Lines | 65 | 12 | 1/1/2000 |
| PNW | Prescott and Northwestern Railroad | Short Lines | 4 | 0 | 1/1/2000 |
| SLGG | Progress Rail Services Corporation | Short Lines | 12 | 321 | 1/1/2000 |
| PGR | Progressive Rail, Inc | Short Lines | 21 | 61 | 1/1/2000 |
| WRWK | Providence & Worchester Railroad | Short Lines | 5 | 2373 | 1/1/2000 |
| PSAP | Puget Sound and Pacific Railroad Company | Short Lines | 30 | 4 | 1/1/2000 |
| QCM | Quebec Cartier Railroad | Short Lines | 53 | 27 | 1/1/2000 |
| QGRY | Quebec Gatineau Railway Incorporated | Short Lines | 61 | 384 | 1/1/2000 |
| QRR | Quincy Railroad Company | Short Lines | 7 | 0 | 1/1/2000 |
| SPCX | Qwest Communications Corporation | Short Lines | 16 | 23 | 1/1/2000 |
| RJCN | R.J. Corman Railroad Company/ Allentown Lines Incorporated | Short Lines | 2 | 2 | 7/27/2012 |
| RJCL | R.J. Corman Railroad Company/ Cleveland | Short Lines | 4 | 0 | 1/1/2000 |
| RJCM | R.J. Corman Railroad Company/ Memphis Li | Short Lines | 27 | 103 | 1/1/2000 |
| RJCP | R.J. Corman Railroad Company/ Pennsylvan | Short Lines | 34 | 39 | 1/1/2000 |
| RJCW | R.J. Corman Railroad Company/ Western Ohio Line | Short Lines | 10 | 20 | 1/1/2000 |
| RJCC | R.J. Corman Railroad/Kentucky Lines | Short Lines | 90 | 122 | 1/1/2000 |
| RV | Rahway Valley R.R. | Short Lines | 4 | 1 | 1/1/2000 |
| CWRL | RailAmerica Central Western Railway Corporation | Short Lines | 2 | 1 | 11/17/2011 |
| RLK | RailAmerica Ottawa Valley Railway | Short Lines | 49 | 29 | 1/1/2000 |
| RSM | Railroad Switching Service of Missouri Incorporated | Short Lines | 3 | 0 | 5/23/2008 |
| RCRY | Raritan Central Railway LLC | Short Lines | 19 | 0 | 1/1/2000 |
| RARW | Rarus Railway Company | Short Lines | 16 | 3 | 1/1/2000 |
| RCGG | Ray-Carroll | Short Lines | 1 | 0 | 10/9/2010 |
| RRVW | Red River Valley and Western Railroad | Short Lines | 42 | 125 | 1/1/2000 |
| RRCI | Redmont Railway Company Incorporated | Short Lines | 1 | 0 | 1/1/2000 |
| RRC | Respondek Railroad Corporation | Short Lines | 51 | 3 | 1/1/2000 |
| RPRC | Richmond Pacific Railroad Corporation | Short Lines | 10 | 2 | 4/26/2011 |
| RVSC | Rio Valley Switching Company | Short Lines | 21 | 38 | 1/1/2000 |
| RJCR | RJ Corman | Short Lines | 121 | 28 | 1/1/2000 |
| RS | Roberval and Saguenay Railway Company | Short Lines | 39 | 30 | 2/7/2007 |
| RSR | Rochester and Southern Railroad | Short Lines | 15 | 2 | 1/1/2000 |
| RRRR | Rock and Rail Incorporated | Short Lines | 8 | 16 | 1/1/2000 |
| RSS | Rockdale, Sandow & Southern Railroad | Short Lines | 6 | 6 | 1/1/2000 |
| RMRR | Rocky Mountain Railcar and Railroad Incorporated | Short Lines | 2 | 0 | 7/17/2013 |
| RSP | Roscoe Snyder and Pacific Railway | Short Lines | 6 | 13 | 1/1/2000 |
| SRN | Sabine River & Northern | Short Lines | 13 | 782 | 1/1/2000 |
| SAV | Sacramento Valley | Short Lines | 2 | 0 | 8/17/2009 |
| SGVY | Saginaw Valley Railway Company Incorpora | Short Lines | 2 | 59 | 1/1/2000 |
| SLGW | Salt Lake Garfield and Western Railway Company | Short Lines | 12 | 9 | 1/1/2000 |
| SL | Salt Lake Southern RR | Short Lines | 11 | 8 | 1/1/2000 |
| SDIV | San Diego and Imperial Valley | Short Lines | 13 | 3 | 1/1/2000 |
| SDIY | San Diego and Imperial Valley Railroad Company | Short Lines | 9 | 0 | 5/26/2008 |
| SJVR | San Joaquin Valley RR | Short Lines | 57 | 1 | 1/1/2000 |
| SLRG | San Luis and Rio Grande Railroad | Short Lines | 66 | 118 | 1/1/2000 |
| SLC | San Luis Central Railroad Company | Short Lines | 20 | 348 | 1/1/2000 |
| SMA | San Manuel Arizona Railroad Company | Short Lines | 14 | 11 | 1/1/2000 |
| SPSR | San Pedro & Southwestern Railway Co | Short Lines | 6 | 1 | 1/1/2000 |
| SWKR | San Pedro and Southwestern Railway Compa | Short Lines | 3 | 2 | 1/1/2000 |
| SS | Sand Springs Railway Company | Short Lines | 8 | 8 | 1/1/2000 |
| SAN | Sandersville | Short Lines | 15 | 161 | 1/1/2000 |
| SCBG | Santa Cruz Big Trees & Pacific | Short Lines | 9 | 20 | 1/1/2000 |
| SFS | Santa Fe Southern | Short Lines | 7 | 47 | 1/1/2000 |
| SMV | Santa Maria Valley Railroad Company | Short Lines | 14 | 5 | 7/30/2007 |
| SNC | Saratoga & North Creek Railway | Short Lines | 19 | 585 | 6/11/2008 |
| SAR | Savage Alberta Railway Inc | Short Lines | 18 | 0 | 7/14/2007 |
| SA | Savannah & Atlanta | Short Lines | 7 | 13 | 1/1/2000 |
| SWGR | Seagraves Whiteface and Lubbock Railroad | Short Lines | 1 | 2 | 2/26/2008 |
| SGLR | Seminole Gulf | Short Lines | 27 | 220 | 1/1/2000 |
| SQVR | Sequatchie Valley Railroad | Short Lines | 25 | 1 | 1/1/2000 |
| SVRR | Shamokin Valley Railroad Company | Short Lines | 6 | 21 | 1/1/2000 |
| SV | Shenandoah Valley Railroad | Short Lines | 3 | 2 | 1/1/2000 |
| SERA | Sierra Northern Railway | Short Lines | 40 | 73 | 1/1/2000 |
| SRYC | Sierra Railway Company of California | Short Lines | 18 | 18 | 10/14/2008 |
| SMRR | Sisseton Milbank Railroad Incorporated | Short Lines | 6 | 44 | 1/1/2000 |
| SSOR | Sisseton Southern Railway Company | Short Lines | 3 | 1 | 1/1/2000 |
| SLRS | SMS Rail Service Incorporated | Short Lines | 49 | 33 | 1/1/2000 |
| SFG | Societe du Chemin de Fer de la Gaspesie | Short Lines | 6 | 33 | 5/18/2011 |
| SOM | Somerset Railroad Corporation | Short Lines | 0 | 154 | 1/1/2000 |
| SBVR | South Branch Valley Rail Road | Short Lines | 28 | 23 | 1/1/2000 |
| SB | South Buffalo RR | Short Lines | 60 | 10 | 1/1/2000 |
| SCRF | South Carolina Central | Short Lines | 24 | 27 | 1/1/2000 |
| SCXF | South Central Florida Express | Short Lines | 6 | 0 | 11/5/2013 |
| SCFE | South Central Florida Express Incorporated | Short Lines | 32 | 24 | 9/19/2007 |
| SCTR | South Central Tennessee | Short Lines | 12 | 7 | 1/1/2000 |
| SCIH | South Chicago & Indiana Harbor Railway C | Short Lines | 4 | 75 | 1/1/2000 |
| SKOL | South Kansas and Oklahoma | Short Lines | 32 | 43 | 1/1/2000 |
| SLAL | South Plains Lamesa | Short Lines | 8 | 0 | 1/1/2000 |
| SEKR | Southeast Kansas Railroad Company | Short Lines | 17 | 5 | 1/1/2000 |
| SRMX | Southeastern Railway | Short Lines | 1 | 3 | 8/8/2010 |
| SUAB | Southern Alabama RR | Short Lines | 4 | 0 | 1/1/2000 |
| SIND | Southern Indiana Railway Incorporated | Short Lines | 4 | 18 | 1/1/2000 |
| SIRR | Southern Industrial Railroad | Short Lines | 0 | 2 | 2/9/2010 |
| SMNR | Southern Manitoba Railway Incorporated | Short Lines | 2 | 0 | 1/1/2000 |
| SOR | Southern Ontario Railway | Short Lines | 21 | 1 | 1/1/2000 |
| SRNJ | Southern Railroad Company of New Jersey | Short Lines | 23 | 28 | 1/1/2000 |
| SRY | Southern Railway of British Columbia Lim | Short Lines | 56 | 909 | 1/1/2000 |
| BCH | Southern Railway of British Columbia Limited | Short Lines | 28 | 23 | 5/28/2007 |
| SSLV | Southern San Luis Valley Railroad | Short Lines | 3 | 1 | 1/1/2000 |
| SSC | Southern Switching Company | Short Lines | 5 | 2 | 1/1/2000 |
| SWP | Southwest Pennsylvania Railroad | Short Lines | 19 | 0 | 1/1/2000 |
| SW | Southwestern Railroad Company | Short Lines | 51 | 13 | 1/1/2000 |
| SWRX | Southwind Shortline Railroad Co | Short Lines | 2 | 0 | 6/3/2008 |
| SPEG | Spencerville & Elgin | Short Lines | 4 | 6 | 4/4/2009 |
| SMW | St Marys Railway West LLC | Short Lines | 4 | 2122 | 7/1/2007 |
| SCXY | St. Croix Valley Railroad Company | Short Lines | 6 | 30 | 1/1/2000 |
| SLRR | St. Lawrence and Raquette River Railroad | Short Lines | 2 | 0 | 5/6/2008 |
| NSL | St. Lawrence and Raquette River Railroad | Short Lines | 6 | 15 | 1/1/2000 |
| STMA | St. Maries River Railroad Company | Short Lines | 6 | 69 | 1/1/2000 |
| SM | St. Marys Railroad | Short Lines | 18 | 69 | 1/1/2000 |
| SH | Steelton and Highspire Railroad Company | Short Lines | 18 | 135 | 1/1/2000 |
| STRT | Stewartstown Railroad Company | Short Lines | 6 | 7 | 4/8/2010 |
| SLWC | Stillwater Central | Short Lines | 4 | 6 | 1/1/2000 |
| STE | Stockton Terminal and Eastern RR | Short Lines | 15 | 75 | 1/1/2000 |
| SBRR | Stourbridge Railroad Company | Short Lines | 3 | 8 | 1/1/2000 |
| SRC | Strasburg Railroad | Short Lines | 30 | 53 | 1/1/2000 |
| SNR | Sunflour Railroad | Short Lines | 1 | 0 | 1/1/2000 |
| TE | Tacoma Eastern Railway Company | Short Lines | 8 | 6 | 4/13/2007 |
| TZPR | Tazewell & Peoria Railroad | Short Lines | 17 | 177 | 1/1/2000 |
| TC | Temple & Central Texas | Short Lines | 13 | 27 | 1/1/2000 |
| TSRR | Tennessee Southern | Short Lines | 44 | 4 | 1/1/2000 |
| TVRM | Tennessee Valley | Short Lines | 46 | 52 | 1/1/2000 |
| TKEN | Tennken Railroad Company Incorporated | Short Lines | 3 | 95 | 1/1/2000 |
| TASD | Terminal Alabama State Docks | Short Lines | 22 | 121 | 1/1/2000 |
| TNMR | Texas and New Mexico | Short Lines | 15 | 12 | 1/1/2000 |
| TN | Texas and Northern Railway Company | Short Lines | 27 | 35 | 1/1/2000 |
| TXOR | Texas and Oklahoma Railroad Company | Short Lines | 10 | 0 | 1/1/2000 |
| TXGN | Texas Gonzales and Northern Railway Comp | Short Lines | 18 | 0 | 1/1/2000 |
| TXNW | Texas North Western Railway Company | Short Lines | 20 | 1 | 6/30/2007 |
| TNER | Texas Northeastern Division Mid-Michigan | Short Lines | 21 | 12 | 1/1/2000 |
| TOE | Texas Oklahoma and Eastern RR Company | Short Lines | 21 | 527 | 1/1/2000 |
| TXPF | Texas Pacifico Transportation Ltd | Short Lines | 1 | 0 | 7/31/2014 |
| TXR | Texas Rock Crusher Railway Company | Short Lines | 13 | 0 | 1/1/2000 |
| TSE | Texas South-Eastern Railroad Company | Short Lines | 5 | 69 | 1/1/2000 |
| TM | Texas-Mexican | Short Lines | 51 | 139 | 1/1/2000 |
| TBRY | Thermal Belt | Short Lines | 2 | 0 | 1/1/2000 |
| TNHR | Three Notch Railroad | Short Lines | 10 | 22 | 1/1/2000 |
| TR | Tomahawk Railway L.P. | Short Lines | 15 | 2909 | 1/1/2000 |
| TIRL | Tonawanda Island Railroad Incorporated | Short Lines | 1 | 0 | 1/1/2000 |
| TSWR | Toppenish, Simcoe & Western Railroad | Short Lines | 3 | 2 | 1/1/2000 |
| TMT | Trailer Marine Transport Corporation | Short Lines | 0 | 4 | 1/1/2000 |
| TTI | Transkentucky Transportation | Short Lines | 53 | 3 | 1/1/2000 |
| TCRY | Tri-City Railroad | Short Lines | 18 | 6 | 11/20/2007 |
| TRRY | Trillium Railway Co. Ltd. | Short Lines | 8 | 1 | 1/1/2000 |
| TRIN | Trinidad Railway Incorporated | Short Lines | 1 | 0 | 1/1/2000 |
| TRC | Trona Railway Company | Short Lines | 25 | 3 | 1/1/2000 |
| TVRR | Tulare Valley Railroad Company | Short Lines | 2 | 44 | 1/1/2000 |
| TSU | Tulsa-Sapulpa Union Railway | Short Lines | 8 | 4 | 1/1/2000 |
| TCKR | Turtle Creek Industrial RR.Incorporated | Short Lines | 3 | 2 | 1/1/2000 |
| TCWR | Twin Cities and Western | Short Lines | 44 | 588 | 1/1/2000 |
| TSRD | Twin State Railroad Company | Short Lines | 0 | 21 | 1/1/2000 |
| TYBR | Tyburn Railroad Company | Short Lines | 6 | 0 | 1/1/2000 |
| TSNR | Tyson Railroad Incorporated | Short Lines | 3 | 0 | 1/1/2000 |
| USRC | U.S. Rail Corporation-Jackson Division | Short Lines | 5 | 0 | 10/8/2007 |
| DKS | Union Pacific Railroad Company | Short Lines | 0 | 5 | 5/25/2010 |
| URR | Union Railroad | Short Lines | 105 | 101 | 1/1/2000 |
| UMP | Upper Merion and Plymouth Railroad | Short Lines | 13 | 63 | 1/1/2000 |
| UCRY | Utah Central | Short Lines | 19 | 1567 | 1/1/2000 |
| VS | V and S Railway Incorporated | Short Lines | 13 | 10 | 1/1/2000 |
| VR | Valdosta Railway | Short Lines | 105 | 122 | 1/1/2000 |
| VSO | Valdosta Southern | Short Lines | 3 | 6 | 1/1/2000 |
| VRRC | Vandalia Railroad | Short Lines | 2 | 0 | 1/1/2000 |
| VRR | Vaughan Railroad Company | Short Lines | 2 | 2 | 1/1/2000 |
| VCRR | Ventura County Railroad Company | Short Lines | 12 | 6 | 1/1/2000 |
| VC | Virginia Central Railway | Short Lines | 12 | 17 | 1/1/2000 |
| VSRR | Virginia Southern Railroad | Short Lines | 10 | 0 | 1/1/2000 |
| WOHO | Wabash and Ohio | Short Lines | 9 | 0 | 1/1/2000 |
| WBCR | Wabash Central | Short Lines | 4 | 1 | 1/1/2000 |
| WAER | Wabash Erie | Short Lines | 11 | 0 | 1/1/2000 |
| WCLR | Waccamaw Coastline | Short Lines | 17 | 14 | 1/1/2000 |
| WHOE | Walking Horse & Eastern | Short Lines | 4 | 3 | 1/1/2000 |
| WSR | Warren and Saline River Railroad | Short Lines | 4 | 1 | 1/1/2000 |
| WTRM | Warren and Trumbull Railroad Company | Short Lines | 0 | 44 | 1/1/2000 |
| WAR | Warrenton Railroad Company | Short Lines | 5 | 5 | 1/1/2000 |
| WCRC | Washington Central | Short Lines | 19 | 431 | 1/1/2000 |
| MSR | WATCO Incorporated | Short Lines | 2 | 0 | 1/4/2008 |
| WCTR | WCTU Company White City Terminal Railway | Short Lines | 0 | 183 | 1/1/2000 |
| WCOR | Wellsboro and Corning Railroad Company | Short Lines | 11 | 115 | 1/1/2000 |
| WCRL | West Chester Railroad Company | Short Lines | 11 | 13 | 1/1/2000 |
| WFS | West Isle Line Incorporated | Short Lines | 1 | 1 | 1/1/2000 |
| WJ | West Michigan Railroad Company | Short Lines | 1 | 0 | 5/25/2007 |
| WTNN | West Tennessee | Short Lines | 20 | 1 | 1/1/2000 |
| WTLC | West Texas & Lubbock Railroad Co Inc. | Short Lines | 9 | 1 | 1/1/2000 |
| WTLR | West Texas and Lubbock Railroad Company | Short Lines | 4 | 0 | 1/1/2000 |
| WKRL | Western Kentucky Railroad | Short Lines | 2 | 0 | 7/13/2010 |
| WNYP | Western New York and Pennsylvania | Short Lines | 40 | 27 | 1/1/2000 |
| WRIX | Western Rail Inc | Short Lines | 102 | 0 | 1/1/2000 |
| WRRC | Western Rail Road Company | Short Lines | 10 | 27 | 1/27/2008 |
| WTCO | Western Transportation Company | Short Lines | 3 | 0 | 1/4/2008 |
| WCTU | White City Terminal | Short Lines | 6 | 0 | 1/1/2000 |
| WTJR | Wichita Tillman & Jackson Railway | Short Lines | 19 | 0 | 1/1/2000 |
| WPRR | Willamette and Pacific | Short Lines | 31 | 383 | 1/1/2000 |
| WVR | Willamette Valley | Short Lines | 5 | 2 | 1/1/2000 |
| WGR | Willamette Valley Railway Company | Short Lines | 1 | 137 | 1/1/2000 |
| WWRC | Wilmington and Western Railroad | Short Lines | 9 | 15 | 1/1/2000 |
| WTRY | Wilmington Terminal Railroad Incorporated | Short Lines | 5 | 0 | 5/23/2011 |
| WSRY | Winamac Southern | Short Lines | 1 | 3 | 1/1/2000 |
| WW | Winchester & Western | Short Lines | 50 | 671 | 1/1/2000 |
| WHRC | Windsor and Hantsport Railway Company | Short Lines | 11 | 33 | 1/1/2000 |
| WSS | Winston-Salem Southbound Railway Company | Short Lines | 0 | 5 | 6/20/2007 |
| WGCR | Wiregrass Central Railroad. Incorporated | Short Lines | 28 | 32 | 1/1/2000 |
| WSOR | Wisconsin & Southern | Short Lines | 126 | 770 | 1/1/2000 |
| WGNS | Wisconsin Great Northern Railroad Inc | Short Lines | 12 | 30 | 1/27/2008 |
| WYS | Wyandotte Southern Railroad Company | Short Lines | 2 | 0 | 5/12/2010 |
| WYCO | Wyoming and Colorado Railroad | Short Lines | 7 | 2 | 1/1/2000 |
| YVRR | Yadkin Valley | Short Lines | 54 | 66 | 1/1/2000 |
| YVT | Yakim Valley Transportation Company | Short Lines | 10 | 3 | 1/1/2000 |
| YDC | Yankeetown Docks | Short Lines | 9 | 3 | 1/1/2000 |
| YSLR | Yolo Shortline Railroad Company | Short Lines | 6 | 2 | 1/1/2000 |
| YKR | York Rail | Short Lines | 15 | 310 | 1/1/2000 |
| YRC | York Rail | Short Lines | 22 | 14 | 1/1/2000 |
| YA | Youngstown & Austintown RR | Short Lines | 2 | 0 | 1/1/2000 |
| YARR | Youngstown and Austintown Railroad | Short Lines | 3 | 239 | 1/1/2000 |
| YB | Youngstown Belt Railroad Company | Short Lines | 0 | 128 | 1/1/2000 |
| YW | Yreka Western Railroad Company | Short Lines | 10 | 13 | 1/1/2000 |
| ZWSX | Zanesville & Western | Short Lines | 2 | 1 | 7/15/2008 |