User:NE2/reporting

These are listed on http://c02.my.uprr.com/scs/index.jas.
 * AA: Ann Arbor Railroad
 * AB: Akron Barberton Cluster Railway
 * ABS: Alabama Southern Railroad
 * ACJR: Ashtabula, Carson and Jefferson Railroad
 * ACWR: Aberdeen, Carolina and Western Railway
 * ADBF: Adrian and Blissfield Rail Road
 * AERC: Albany and Eastern Railroad
 * AF: Alabama and Florida Railway
 * AGCR: Alamo Gulf Coast Railroad
 * AGR: Alabama and Gulf Coast Railway
 * AKDN: Acadiana Railway
 * AKMD: Arkansas Midland Railroad
 * AL: Almanor Railroad
 * ALAB: Alabama Railroad
 * ALM: Arkansas, Louisiana and Mississippi Railroad
 * ALS: Alton and Southern Railway
 * ALT: Airlake Terminal Railway
 * AM: Arkansas and Missouri Railroad
 * AN: AN Railway
 * ANR: Angelina and Neches River Railroad
 * AO: Appalachian and Ohio Railroad
 * AOK: Arkansas-Oklahoma Railroad
 * AOR: Aliquippa and Ohio River Railroad
 * APA: Apache Railway
 * APD: Albany Port Railroad
 * APNC: Appanoose County Community Railroad
 * AR: Aberdeen and Rockfish Railroad
 * ARA: Arcade and Attica Railroad
 * ARC: Alexander Railroad
 * ARR: Alaska Railroad
 * ARS: Arkansas Southern Railroad
 * ARZC: Arizona and California Railroad
 * ASRY: Ashland Railway
 * ATLT: AT&L Railroad
 * ATN: Alabama and Tennessee River Railway
 * ATR: Alliance Terminal Railroad
 * ATW: Atlantic and Western Railway
 * AVR: Allegheny Valley Railroad
 * AWRR: Austin Western Railroad
 * AZCR: Arizona Central Railroad
 * AZER: Arizona Eastern Railway
 * BAYL: Bay Line Railroad
 * BB: Buckingham Branch Railroad
 * BCLR: Bay Colony Railroad
 * BCR: Bay Coast Railroad
 * BDRV: Belvidere and Delaware River Railway
 * BDTL: Ballard Terminal Railroad
 * BDW: Bighorn Divide and Wyoming Railroad
 * BEEM: Beech Mountain Railroad
 * BFRR: Big 4 Terminal Railroad
 * BGCM: BG&CM Railroad
 * BH: B&H Rail Corporation
 * BHWY: Boot Hill and Western Railway
 * BIRR: Bellingham International Railroad
 * BJRY: Burlington Junction Railway
 * BKRR: Batten Kill Railroad
 * BLE: Bessemer and Lake Erie Railroad
 * BLOL: Bloomer Shippers Connecting Railroad
 * BLR: Blacklands Railroad
 * BNG: Blackwell Northern Gateway Railroad
 * BNSF: BNSF Railway
 * BOCT: Baltimore and Ohio Chicago Terminal Railroad
 * BOP: Border Pacific Railroad
 * BPRR: Buffalo and Pittsburgh Railroad
 * BRAN: Brandon Railroad
 * BRC: Belt Railway of Chicago
 * BRG: Brownsville and Rio Grande International Railroad
 * BRS: Baton Rouge Southern Railroad
 * BRW: Black River and Western Corporation
 * BS: Birmingham Southern Railroad
 * BSDA: Bi-State Development Agency Railroad
 * BSOR: Buffalo Southern Railroad
 * BSVY: Boone and Scenic Valley Railroad
 * BVRY: Brandywine Valley Railroad
 * BXN: Bauxite and Northern Railway
 * CA: Chesapeake and Albemarle Railroad
 * CAEG: Coffeen and Western Railroad
 * CAGY: Columbus and Greenville Railway
 * CALA: Carolina Southern Railroad
 * CARR: Carrollton Railroad
 * CBRW: Columbia Basin Railroad
 * CBRY: Copper Basin Railway
 * CC: Chicago Central and Pacific Railroad
 * CCKY: Chattooga and Chickamauga Railway
 * CCPN: Corpus Christi Terminal Railroad
 * CCRA: Camp Chase Industrial Railroad
 * CCRL: Cleveland Commercial Railroad
 * CCRR: Claremont Concord Railroad
 * CCT: Central California Traction Company
 * CCUO: Chicago-Chemung Railroad
 * CEDR: Cedar River Railroad
 * CEIW: Central Indiana and Western Railroad
 * CERA: Central Railroad of Indianapolis
 * CF: Cape Fear Railways
 * CFE: Chicago, Fort Wayne and Eastern Railroad
 * CFNR: California Northern Railroad
 * CFWR: Caney Fork and Western Railroad
 * CGR: CG Railway
 * CHAT: Chattahoochee Bay Railroad
 * CHR: Chestnut Ridge Railroad
 * CHS: Charlotte Southern Railroad
 * CIC: Cedar Rapids and Iowa City Railway
 * CIND: Central Railroad of Indiana
 * CIRR: Chattahoochee Industrial Railroad
 * CIRY: Central Illinois Railroad
 * CKIN: Chesapeake and Indiana Railroad
 * CKSI: Carthage, Knightstown and Shirley Railroad
 * CLC: Columbia and Cowlitz Railway
 * CLNA: Carolina Coastal Railway
 * CLP: Clarendon and Pittsford Railroad
 * CM: Central Montana Rail, Inc.
 * CMC: CMC Railroad
 * CMPA: Madison Railroad
 * CMR: Central Midland Railway
 * CMSL: Cape May Seashore Lines
 * CN: Canadian National Railway
 * CNOW: Columbia and Northern Railway
 * CNUR: C&NC Railroad
 * CNYK: Central New York Railroad
 * CNZR: Central New England Railroad
 * COEH: Conecuh Valley Railroad
 * COER: Crab Orchard and Egyptian Railroad
 * COP: City of Prineville Railway
 * CORP: Central Oregon and Pacific Railroad
 * CP: Canadian Pacific Railway
 * CPC: Chicago Port Railroad
 * CPDR: Carolina Piedmont Railroad
 * CPRS: Canadian Pacific Railway
 * CRL: Chicago Rail Link
 * CSCD: Cascade and Columbia River Railroad
 * CSKR: C&S Railroad
 * CSO: Connecticut Southern Railroad
 * CSS: Chicago SouthShore and South Bend Railroad
 * CSXT: CSX Transportation
 * CT: Columbia Terminal Railroad
 * CTM: Chicago Terminal Railroad
 * CTN: Canton Railroad
 * CTR: Clinton Terminal Railroad
 * CTRR: Cloquet Terminal Railroad
 * CUOH: Columbus and Ohio River Rail Road
 * CVR: Cimarron Valley Railroad
 * CVRC: Cannon Valley Railroad
 * CVYR: Caddo Valley Railroad
 * CW: Colorado and Wyoming Railway
 * CWA: Central Washington Railroad
 * CWCY: Caldwell County Railroad
 * CWRO: Cleveland Works Railway
 * CWRY: Commonwealth Railway
 * CYCY: Crystal City Railroad
 * CZRY: Carrizo Gorge Railway
 * DA: Canadian Pacific Railway (Dominion Atlantic Railway)
 * DAIR: D&I Railroad
 * DC: Delray Connecting Railroad
 * DCLR: Delaware Coast Line Railroad
 * DCON: Detroit Connecting Railroad
 * DCRR: Dubois County Railroad
 * DGNO: Dallas, Garland and Northeastern Railroad
 * DGVR: Durbin and Greenbrier Valley Railroad
 * DH: Delaware and Hudson Railway
 * DKS: Doniphan, Kensett and Searcy Railway
 * DL: Delaware-Lackawanna Railroad
 * DLWR: Depew, Lancaster and Western Railroad
 * DME: Dakota, Minnesota and Eastern Railroad
 * DMIR: Duluth, Missabe and Iron Range Railway
 * DMM: Dansville and Mount Morris Railroad
 * DMVW: Dakota, Missouri Valley and Western Railroad
 * DN: Dakota Northern Railroad
 * DQE: De Queen and Eastern Railroad
 * DR: Dardanelle and Russellville Railroad
 * DRIR: Denver Rock Island Railroad
 * DSRC: Dakota Southern Railway
 * DSRR: Delta Southern Railroad
 * DT: Decatur Junction Railway
 * DVS: Delta Valley and Southern Railway
 * DWP: Duluth, Winnipeg and Pacific Railway
 * EACH: East Camden and Highland Railroad
 * EARY: Eastern Alabama Railway
 * EBSR: East Brookfield and Spencer Railroad
 * ECBR: East Cooper and Berkeley Railroad
 * ECTB: East Chattanooga Belt Railway
 * EDW: El Dorado and Wesson Railway
 * EE: Ellis and Eastern Company
 * EEC: East Erie Commercial Railroad
 * EFRR: Effingham Railroad
 * EIRC: Eastern Illinois Railroad
 * EIRR: Eastern Idaho Railroad
 * EJE: Elgin, Joliet and Eastern Railway
 * EJR: East Jersey Railroad and Terminal Company
 * ELKR: Elk River Railroad
 * ELS: Escanaba and Lake Superior Railroad
 * EMRY: Eastern Maine Railway
 * ESPN: East Penn Railroad
 * ETRY: East Tennessee Railway
 * EV: Everett Railroad
 * EVWR: Evansville Western Railway
 * EWG: Eastern Washington Gateway Railroad
 * EWR: Elkhart and Western Railroad
 * FC: Fulton County Railroad
 * FCEN: Florida Central Railroad
 * FCR: Fulton County Railway
 * FCRD: First Coast Railroad
 * FEC: Florida East Coast Railway
 * FGLK: Finger Lakes Railway
 * FIR: Flats Industrial Railroad
 * FMID: Florida Midland Railroad
 * FMRC: Farmrail Corporation
 * FNOR: Florida Northern Railroad
 * FNW: Fremont Northwestern Railroad
 * FP: Fordyce and Princeton Railroad
 * FRR: Falls Road Railroad
 * FRVT: Fore River Transportation Corporation
 * FSR: Fort Smith Railroad
 * FVRR: Fredonia Valley Railroad
 * FWCR: Florida West Coast Railroad
 * FWDB: Fort Worth and Dallas Belt Railroad
 * FWDR: Fort Worth and Dallas Railroad
 * FWWR: Fort Worth and Western Railroad
 * GC: Georgia Central Railway
 * GCK: Georges Creek Railway
 * GCSR: Gulf, Colorado and San Saba Railway
 * GCW: Garden City Western Railway
 * GET: Gettysburg and Northern Railroad
 * GFRR: Georgia and Florida Railway
 * GITM: Golden Isles Terminal Railroad
 * GLC: Great Lakes Central Railroad
 * GLSR: Gloster Southern Railroad
 * GMR: Georgia Midland Railroad
 * GMRC: Green Mountain Railroad
 * GMRY: U S Rail Corporation
 * GNBC: Grainbelt Corporation
 * GNRR: Georgia Northeastern Railroad
 * GR: Grand Rapids Eastern Railroad
 * GRLW: Greenville and Western Railway
 * GRNW: Great Northwest Railroad
 * GRR: Georgetown Railroad
 * GRW: Gary Railway
 * GRWR: Great Walton Railroad
 * GSM: Great Smoky Mountains Railroad
 * GSWR: Georgia Southwestern Railroad
 * GTR: Great River Railroad
 * GTRA: Golden Triangle Railroad
 * GTW: Grand Trunk Western Railroad
 * GU: Grafton and Upton Railroad
 * GVSR: Galveston Railroad
 * GWR: Great Western Railway of Colorado
 * GWRC: Georgia Woodlands Railroad
 * GWWE: Gateway Eastern Railway
 * HB: Hampton and Branchville Railroad
 * HCRR: Honey Creek Railroad
 * HE: Hollis and Eastern Railroad
 * HESR: Huron and Eastern Railway
 * HIRR: Hainesport Industrial Railroad
 * HMCR: Huntsville and Madison County Railroad Authority
 * HN: Hutchinson and Northern Railway
 * HOG: Heart of Georgia Railroad
 * HOS: Hoosier Southern Railroad
 * HPTD: High Point, Thomasville and Denton Railroad
 * HR: Heritage Railroad
 * HRR: Hondo Railway
 * HRRC: Housatonic Railroad
 * HSRR: Hardin Southern Railroad
 * IAIS: Iowa Interstate Railroad
 * IANR: Iowa Northern Railway
 * IANW: Iowa Northwestern Railroad
 * IARR: Iowa River Railroad
 * IATR: Iowa Traction Railroad
 * IBR: Iron Bull Railroad
 * IC: Illinois Central Railroad
 * ICE: Iowa, Chicago and Eastern Railroad
 * ICRK: Indian Creek Railroad
 * IERR: Indiana Eastern Railroad
 * IHB: Indiana Harbor Belt Railroad
 * ILW: Illinois Western Railroad
 * IMRR: Illinois and Midland Railroad
 * IN: Indiana Northeastern Railroad
 * INPR: Idaho Northern and Pacific Railroad
 * INRD: Indiana Rail Road
 * IORY: Indiana and Ohio Railway
 * IR: Illinois Railway
 * ISRC: Idaho and Sedalia Transportation Company
 * ISRR: Indiana Southern Railroad
 * ISW: Indiana Southwestern Railway
 * JEFW: Jefferson Warrior Railroad
 * JVRR: Juniata Valley Railroad
 * KAW: Kaw River Railroad
 * KBSR: Kankakee, Beaverville and Southern Railroad
 * KCS: Kansas City Southern Railway
 * KFR: Kettle Falls International Railway
 * KJR: Kiski Junction Railroad
 * KJRY: Keokuk Junction Railway
 * KNOR: Klamath Northern Railway
 * KO: Kansas and Oklahoma Railroad
 * KRL: Kasgro Rail Lines
 * KRR: Kiamichi Railroad
 * KSRY: Kosciusko and Southwestern Railway
 * KT: Kentucky and Tennessee Railway
 * KTR: Kendallville Terminal Railway
 * KWT: KWT Railway
 * KXHR: Knoxville and Holston River Railroad
 * KYLE: Kyle Railroad
 * LAJ: Los Angeles Junction Railway
 * LAL: Livonia, Avon and Lakeville Railroad
 * LAS: Louisiana Southern Railroad
 * LBR: Lowville and Beaver River Railroad
 * LC: Lancaster and Chester Railway
 * LCR: Lake County Railroad
 * LDRR: Louisiana and Delta Railroad
 * LER: Logansport and Eel River Short-Line Company
 * LIRC: Louisville and Indiana Railroad
 * LIRR: Lapeer Industrial Railroad
 * LKRR: Little Kanawha River Rail
 * LMIC: Lake Michigan and Indiana Railroad
 * LNAL: Louisville, New Albany and Corydon Railroad
 * LNVT: Landisville Terminal and Transfer Company
 * LNW: Louisiana and North West Railroad
 * LRPA: Little Rock Port Authority Railroad
 * LRS: Laurinburg and Southern Railroad
 * LRWN: Little Rock and Western Railway
 * LRWY: Lehigh Railway
 * LS: Luzerne and Susquehanna Railway
 * LSI: Lake Superior and Ishpeming Railroad
 * LSRC: Lake State Railway
 * LT: Lake Terminal Railroad
 * LVRB: Lehigh Valley Rail Management - Bethlehem Division
 * LVRJ: Lehigh Valley Rail Management - Johnstown Division
 * LVRR: Lycoming Valley Railroad
 * LW: Louisville and Wadley Railway
 * LXVR: Luxapalila Valley Railroad
 * MAL: Michigan Air-Line Railway
 * MAW: Maumee and Western Railroad
 * MC: Massachusetts Coastal Railroad
 * MCER: Massachusetts Central Railroad
 * MCLR: McLaughlin Line Railroad
 * MCR: McCloud Railway
 * MCSA: Moscow, Camden and San Augustine Railroad
 * MD: Mississippi Delta Railroad
 * MDDE: Maryland and Delaware Railroad
 * MDS: Meridian Southern Railway
 * MDW: Minnesota, Dakota and Western Railway
 * ME: Morristown and Erie Railway
 * MERR: Maine Eastern Railroad
 * MET: Modesto and Empire Traction Company
 * METW: East Troy Electric Railroad
 * MGRI: MG Rail, Inc.
 * MH: Mount Hood Railroad
 * MHSF: Morehead and South Fork Railroad
 * MHWA: Mohawk, Adirondack and Northern Railroad
 * MIDH: Middletown and Hummelstown Railroad
 * MJ: Manufacturers' Junction Railway
 * MKC: McKeesport Connecting Railroad
 * MMA: Montreal, Maine and Atlantic Railway
 * MMID: Maryland Midland Railway
 * MMRR: Mid-Michigan Railroad
 * MMT: Mission Mountain Railroad
 * MNA: Missouri and Northern Arkansas Railroad
 * MNBR: M&B Railroad
 * MNC: Missouri North Central Railroad
 * MNJ: Middletown and New Jersey Railway
 * MNN: Minnesota Northern Railroad
 * MNNR: Minnesota Commercial Railway
 * MNRR: Modoc Northern Railroad
 * MPLI: Minnesota Prairie Line, Inc.
 * MQT: Marquette Rail, LLC
 * MRL: Montana Rail Link
 * MRS: Manufacturers Railway
 * MS: Michigan Shore Railroad
 * MSCI: Mississippi Central Railroad
 * MSE: Mississippi Export Railroad
 * MSL: Montgomery Short Line LLC
 * MSN: Meeker Southern Railroad
 * MSO: Michigan Southern Railroad
 * MSR: Mississippi Southern Railroad
 * MSRW: Mississippian Railway Cooperative
 * MSTR: Massena Terminal Railroad
 * MSV: Mississippi and Skuna Valley Railroad
 * MSWY: Minnesota Southern Railway
 * MTNR: Mississippi Tennessee Railroad
 * MVP: Missouri and Valley Park Railroad
 * MVRY: Mahoning Valley Railway
 * MVT: Mount Vernon Terminal Railway
 * NAUG: Naugatuck Railroad
 * NBER: Nittany and Bald Eagle Railroad
 * NCIR: New Castle Industrial Railroad
 * NCRC: Nebraska Central Railroad
 * NCRL: NC Railroad
 * NCVA: North Carolina and Virginia Railroad
 * NCYR: Nash County Railroad
 * NDCR: NDC Railroad
 * NECR: New England Central Railroad
 * NEGS: New England Southern Railroad
 * NENE: Nebraska Northeastern Railway
 * NERR: Nashville and Eastern Railroad
 * NHCR: New Hampshire Central Railroad
 * NHN: New Hampshire Northcoast Corporation
 * NHRR: New Hope and Ivyland Railroad
 * NJRC: New Jersey Rail Carriers, LLC
 * NKCR: Nebraska Kansas Colorado Railway
 * NLR: Northern Lines Railway
 * NOGC: New Orleans and Gulf Coast Railway
 * NOKL: Northwestern Oklahoma Railroad
 * NOPB: New Orleans Public Belt Railroad
 * NOW: Northern Ohio and Western Railway
 * NPB: Norfolk and Portsmouth Belt Line Railroad
 * NPR: Northern Plains Railroad
 * NRI: Nebkota Railway
 * NS: Norfolk Southern Railway
 * NSHR: North Shore Railroad
 * NSR: Newburgh and South Shore Railroad
 * NTRY: Republic N&T Railroad
 * NVRR: Napa Valley Railroad
 * NWR: Nashville and Western Railroad
 * NYA: New York and Atlantic Railway
 * NYER: New York and Eastern Railway
 * NYGL: New York and Greenwood Lake Railway
 * NYLE: New York and Lake Erie Railroad
 * NYNJ: New York New Jersey Rail, LLC
 * NYOG: New York and Ogdensburg Railway
 * NYSW: New York, Susquehanna and Western Railway
 * OAR: Old Augusta Railroad
 * OCTL: Oil Creek and Titusville Lines, Inc.
 * OHCR: Ohio Central Railroad
 * OHIC: Ohi-Rail Corporation
 * OHRY: Owego and Harford Railway
 * OLB: Omaha, Lincoln and Beatrice Railway
 * OMID: Ontario Midland Railroad
 * ONCT: Ontario Central Railroad
 * OPR: Oregon Pacific Railroad
 * OPT: Orange Port Terminal Railway
 * OSRR: Ohio Southern Railroad
 * OTCR: Oakdale Traction Corporation
 * OTR: Oakland Terminal Railway
 * OTVR: Otter Tail Valley Railroad
 * OUCH: Ouachita Railroad
 * OVR: Ohio Valley Railroad
 * OVRR: Ozark Valley Railroad
 * PAL: Paducah and Louisville Railway
 * PAM: Pittsburgh, Allegheny and McKees Rocks Railroad
 * PBR: Patapsco and Back Rivers Railroad
 * PBVR: Port Bienville Railroad
 * PCC: Palouse River and Coulee City Railroad
 * PCN: Point Comfort and Northern Railway
 * PDRR: Pee Dee River Railroad
 * PGR: Progressive Rail, Inc.
 * PHL: Pacific Harbor Line, Inc.
 * PI: Paducah and Illinois Railroad
 * PICK: Pickens Railway
 * PJR: Port Jersey Railroad
 * PKHP: Pickens Railway, Honea Path Division
 * PNR: Panhandle Northern Railroad
 * PNW: Prescott and Northwestern Railroad
 * PNWR: Portland and Western Railroad
 * POHC: Pittsburgh and Ohio Central Railroad
 * POTB: Port of Tillamook Bay Railroad
 * POVA: Pend Oreille Valley Railroad
 * PRV: Pearl River Valley Railroad
 * PRY: Pioneer Industrial Railway
 * PSAP: Puget Sound and Pacific Railroad
 * PSCC: Pennsylvania and Southern Railway
 * PSRR: Pacific Sun Railroad
 * PSWR: Pennsylvania Southwestern Railroad
 * PT: Peninsula Terminal Company
 * PTC: Plainview Terminal Company
 * PTR: Port Terminal Railroad of South Carolina
 * PTRA: Port Terminal Railroad Association
 * PTRC: Portland Terminal Railroad
 * PUCC: Port Utilities Commission of Charleston, South Carolina
 * PVRR: Pioneer Valley Railroad
 * PVS: Pecos Valley Southern Railway
 * PW: Providence and Worcester Railroad
 * QRR: Quincy Railroad
 * RARW: Butte, Anaconda and Pacific Railway
 * RBMN: Reading Blue Mountain and Northern Railroad
 * RCRY: Raritan Central Railway
 * RJCC: R.J. Corman Railroad/Central Kentucky Lines
 * RJCK: R.J. Corman Railroad/Tennessee Terminal
 * RJCL: R.J. Corman Railroad/Cleveland Line
 * RJCM: R.J. Corman Railroad/Memphis Line
 * RJCN: R.J. Corman Railroad/Allentown Lines
 * RJCP: R.J. Corman Railroad/Pennsylvania Lines
 * RJCR: R.J. Corman Railroad/Bardstown Line
 * RJCV: R.J. Corman Railroad/West Virginia Line
 * RJCW: R.J. Corman Railroad/Western Ohio Lines
 * RPRC: Richmond Pacific Railroad
 * RRC: Redmont Railway
 * RRRR: Rock and Rail LLC
 * RRVW: Red River Valley and Western Railroad
 * RSM: Railroad Switching Services of Missouri
 * RSNR: Red Springs and Northern Railroad
 * RSOR: Riceboro Southern Railway
 * RSR: Rochester and Southern Railroad
 * RSS: Rockdale, Sandow and Southern Railroad
 * RVPR: Riverport Railroad
 * RVSC: Rio Valley Switching Company
 * SAN: Sandersville Railroad
 * SAPT: Savannah Port Terminal Railroad
 * SAV: Sacramento Valley Railroad
 * SB: South Buffalo Railway
 * SBG: Savage Bingham and Garfield Railroad
 * SBLN: Sterling Belt Line Railway
 * SBRR: Stourbridge Railroad
 * SBVR: South Branch Valley Railroad
 * SCBG: Santa Cruz, Big Trees and Pacific Railway
 * SCIH: South Chicago and Indiana Harbor Railway
 * SCRF: South Carolina Central Railroad
 * SCS: Squaw Creek Southern Railroad
 * SCTR: South Central Tennessee Railroad
 * SCXF: South Central Florida Express, Inc.
 * SCXY: St. Croix Valley Railroad
 * SDBB: Somerset Terminal Railroad
 * SDIY: San Diego and Imperial Valley Railroad
 * SE: SEMO Port Railroad
 * SERA: Sierra Northern Railway
 * SFS: Santa Fe Southern Railway
 * SGLR: Seminole Gulf Railway
 * SH: Steelton and Highspire Railroad
 * SIND: Southern Indiana Railway
 * SJVR: San Joaquin Valley Railroad
 * SKOL: South Kansas and Oklahoma Railroad
 * SL: Salt Lake City Southern Railroad
 * SLAL: South Plains Lamesa Railroad
 * SLC: San Luis Central Railroad
 * SLGG: Sidney and Lowe Railroad
 * SLGW: Salt Lake, Garfield and Western Railway
 * SLR: St. Lawrence and Atlantic Railroad
 * SLRG: San Luis and Rio Grande Railroad
 * SLRS: SMS Rail Service, Inc.
 * SLWC: Stillwater Central Railroad
 * SM: St. Mary's Railroad
 * SMRR: Sisseton Milbank Railroad
 * SMV: Santa Maria Valley Railroad
 * SMW: St. Marys Railway West
 * SNR: Sunflour Railroad
 * SNY: SMS Rail Lines of New York, LLC
 * SOM: Somerset Railroad
 * SOO: Soo Line Railroad
 * SPSR: San Pedro and Southwestern Railroad
 * SQVR: Sequatchie Valley Railroad
 * SRC: Strasburg Rail Road
 * SRN: Sabine River and Northern Railroad
 * SRNJ: Southern Railroad of New Jersey
 * SS: Sand Springs Railway
 * SSAM: Sault Ste. Marie Bridge Company
 * SSC: Southern Switching Company
 * SSJR: Sheffield Station Junction Railway
 * ST: Springfield Terminal Railway
 * STE: Stockton Terminal and Eastern Railroad
 * STMA: St. Maries River Railroad
 * STR: Shawnee Terminal Railway
 * SVRR: Shamokin Valley Railroad
 * SW: Southwestern Railroad
 * SWP: Southwest Pennsylvania Railroad
 * TASD: Terminal Railway Alabama State Docks
 * TBRY: Thermal Belt Railway
 * TCB: Texas Central Business Lines Corporation
 * TCBY: Tecumseh Branch Connecting Railroad
 * TCKR: Turtle Creek Industrial Railroad
 * TCRY: Tri-City and Olympia Railroad
 * TCT: Texas City Terminal Railway
 * TCWR: Twin Cities and Western Railroad
 * TI: Turners Island, LLC
 * TIBR: Timber Rock Railroad
 * TISH: Tishomingo Railroad
 * TKEN: Tennken Railroad
 * TM: Texas Mexican Railway
 * TMBL: Tacoma Rail
 * TMSS: Towanda-Monroeton Shippers Lifeline, Inc.
 * TN: Texas and Northern Railway
 * TNER: Texas Northeastern Railroad
 * TNHR: Three Notch Railroad
 * TNMR: Texas-New Mexico Railroad
 * TOE: Texas, Oklahoma and Eastern Railroad
 * TPW: Toledo, Peoria and Western Railway
 * TR: Tomahawk Railway
 * TRC: Trona Railway
 * TRMW: Tacoma Rail Mountain Division
 * TRRA: Terminal Railroad Association of St. Louis
 * TSE: Texas South-Eastern Railroad
 * TSRR: Tennessee Southern Railroad
 * TSU: Tulsa-Sapulpa Union Railway
 * TTIS: Transkentucky Transportation Railroad
 * TTR: Talleyrand Terminal Railroad
 * TVRR: Tulare Valley Railroad
 * TXGN: Texas, Gonzales and Northern Railway
 * TXNW: Texas North Western Railway
 * TXOR: Texas and Oklahoma Railroad
 * TXPF: Texas Pacifico Transportation
 * TXR: Texas Rock Crusher Railway
 * TYBR: Tyburn Railroad
 * TZPR: Tazewell and Peoria Railroad
 * UCRY: Utah Central Railway
 * UMP: Upper Merion and Plymouth Railroad
 * UP: Union Pacific Railroad
 * URR: Union Railroad
 * UTAH: Utah Railway
 * VCRR: Ventura County Railroad
 * VR: Valdosta Railway
 * VRR: Vaughan Railroad
 * VRRC: Vandalia Railroad
 * VSOR: Vicksburg Southern Railroad
 * VSR: V&S Railway
 * VSRR: Virginia Southern Railroad
 * VST: Towner Railway
 * VTR: Vermont Railway
 * VVRR: Vermilion Valley Railroad
 * WACR: Washington County Railroad
 * WBCR: Wabash Central Railroad
 * WC: Wisconsin Central Ltd.
 * WCLR: Waccamaw Coast Line Railroad
 * WCOR: Wellsboro and Corning Railroad
 * WCTR: WCTU Railway
 * WE: Wheeling and Lake Erie Railway
 * WGCR: Wiregrass Central Railroad
 * WHOE: Walking Horse and Eastern Railroad
 * WIR: Washington and Idaho Railway
 * WKRL: Western Kentucky Railway
 * WMI: West Michigan Railroad
 * WN: Wisconsin Northern Railroad
 * WNYP: Western New York and Pennsylvania Railroad
 * WPRR: Willamette and Pacific Railroad
 * WRRC: Western Rail Road
 * WRS: Western Rail Switching
 * WSOR: Wisconsin and Southern Railroad
 * WSR: Warren and Saline River Railroad
 * WSRY: Winamac Southern Railway
 * WSS: Winston-Salem Southbound Railway
 * WTA: Wichita Terminal Association
 * WTJR: Wichita, Tillman and Jackson Railway
 * WTLC: West Texas and Lubbock Railway
 * WTNN: West Tennessee Railroad
 * WTRM: Warren and Trumbull Railroad
 * WTRY: Wilmington Terminal Railroad
 * WURR: Wallowa Union Railroad Authority
 * WVR: Willamette Valley Railway
 * WW: Winchester and Western Railroad
 * WWRC: Wilmington and Western Railroad
 * WYCO: Wyoming Colorado Railroad
 * YARR: Youngstown and Austintown Railroad
 * YB: Youngstown Belt Railroad
 * YRC: York Railway
 * YSRR: Youngstown and Southeastern Railroad
 * YSVR: Yellowstone Valley Railroad
 * YVRR: Yadkin Valley Railroad
 * YW: Yreka Western Railroad