List of reporting marks: D
# List of reporting marks: D

Note: Marks ending in U are for container owners; marks ending in X are not common carriers; marks ending in Z are for trailers without flanged wheels. All other marks are of common-carrier railroads.

## D

* DA - Dominion Atlantic Railway; Canadian Pacific Railway
* DACX - Darling and Company; VIP Tank Services
* DAFU - Dafra Lines, SA
* DAFX - United States Department of Defense (Troop Support and Aviation Material Readiness)
* DAFZ - Dafra Lines, SA
* DAIR - D&I Railroad
* DAKR - Dakota Rail
* DAKS - Dakota Short Line
* DAKX - DAK Americas, LLC
* DALT - Dallas Terminal Railway
* DALZ - D and A Leasing, Inc.
* DANX - Dana Railcare
* DAPX - Dairyland Power Cooperative
* DARU - Dart Container Line, Inc.
* DARZ - Dart Intermodal, Inc.
* DATU - Dart Container Line, Inc.
* DATX - DATX Associates
* DAVX - W. R. Grace and Company (Conn. Davison Chemical Division)
* DAWX - D.A. Walmsley and Company
* DAX - Diamond Shamrock Chemicals Company; Occidental Chemical Corporation
* DBCX - Badische Corporation; BASF Corporation
* DBGX - Dowdle Butane Gas Company
* DBSU - Donbar Steamship Company, Inc.
* DBUX - Canterra Energy, Ltd.; CIT Group/Capital Finance, Inc.
* DBWX - DB Western, Inc.
* DC - Delray Connecting Railroad
* DCAX - Tarmac Florida, Inc.
* DCBX - DeGussa Engineered Carbons, LLP
* DCCU - Dow Corning Corporation
* DCCX - McDonnell Douglas Corporation
* DCFX - PLM International, Inc.
* DCI - Des Moines and Central Iowa
* DCIX - Danella Construction Corporation
* DCLR - Delaware Coast Line Railroad
* DCLU - Dutch Container Leasing, B.V.
* DCLX - Procor Ltd.; Dow Chemical Canada, Inc.
* DCMX - Davidson Construction Materials, Inc.
* DCON - Detroit Connecting Railroad Company
* DCOU - Dow Corning Corporation
* DCPX - Dart Container Corporation of Pennsylvania
* DCR - Delmarva Central Railroad
* DCRR - Dubois County Railroad
* DCSU - Delta Conteneur Service
* DCTX - PLM International
* DD - Dover and Delaware River Railroad
* DDDX - Frontier Cooperative Company
* DDEX - Dupont Dow Elastomers, LLC
* DDNX - Didion, Inc.
* DEAX - Deacero, S.A. de C.V.
* DEBX - Ceres AG Products
* DEEX - Detroit Edison
* DEGX - Mississippi Power Company
* DEMX - Demeter, Inc.
* DEPX - Dependable Properties, Inc.
* DETX - Detroit Edison Company
* DFTX - DTE Transportation Services, Ltd.
* DGBY - Digby Truck Lines
* DGCX - Dakota Gasification Company
* DGHX - North American Chemical Company
* DGIX - D and G Enterprises, LLC
* DGNO - Dallas, Garland and Northeastern Railroad
* DGVR - Durbin and Greenbrier Valley Railroad
* DH - Delaware and Hudson Railway
* DHNY - Delaware and Hudson Railway
* DHPX - Degussa Corporation
* DHRU - Den Hartogh NV
* DICX - Pure Carbonic Company
* DIIU - Dart Intermodal, Inc.
* DJBX - Gandy Dancer, Inc. (Donald J. Bertel)
* DJJX - The David J. Joseph Co.
* DJLX - The David J. Joseph Co.; CIT Group/Capital Finance, Inc.
* DJMX - Daniel John Marnell
* DJNX - The David J. Joseph Co.
* DJPX - The David J. Joseph Co.
* DJRX - The David J. Joseph Co.
* DJTX - The David J. Joseph Co.
* DKPX - Duke Power Company (scale test cars)
* DKS - Doniphan, Kensett and Searcy Railway; Union Pacific Railroad
* DKUX - Exxon Mobil Corporation
* DL - Delaware Lackawanna
* DLC - Drummond Lighterage
* DLCR - Delaware Coast Line Railroad
* DLCX - Waste Management, Inc.
* DLFX - Diversified Lease Funding, Inc.
* DLGX - Lewis Grain Company
* DLKU - Deltank, Ltd.
* DLMX - Daylight Locomotives and Machine Works, Inc.
* DLNW - Denver, Laramie and North Western Railroad; Great Western Railway of Colorado
* DLPX - DeGussa Canada, Ltd.
* DLRX - GE Railcar Services Corporation
* DLSX - Diesel Supply Company, Inc.
* DLTX - Dale L. Thornborough
* DLVX - Thiokol Corporation
* DLW - Delaware, Lackawanna and Western Railroad; Erie Lackawanna Railway; Norfolk Southern
* DLWR - Depew, Lancaster and Western Railroad
* DLWX - D.L. and W., Inc.
* DM - Detroit and Mackinac Railway
* DME - Dakota, Minnesota and Eastern Railroad
* DMHX - Davenport Mammoet, LLC
* DMIR - Duluth, Missabe and Iron Range Railway
* DMIX - ADM Transportation
* DMLX - GE Railcar Services Corporation
* DMLZ - DML Containers
* DMM - Dansville and Mount Morris Railroad
* DMU - Des Moines Union Railway
* DMVW - Dakota, Missouri Valley and Western Railroad
* DNAX - Dana Railcare
* DNE - Duluth and Northeastern Railroad
* DOCX - Du Pont Canada, Inc.
* DODU - United States Department of Defense
* DODX - United States Department of Defense (Military Traffic Management Command)
* DODZ - United States Department of Defense
* DOEX - Doe Run Resources Corporation
* DOLX - Dolese Brothers Company
* DONX - Donnelly Commodities Company
* DOTX - United States Department of Transportation; Federal Railroad Administration
* DOWU - Dow Chemical Company
* DOWX - Dow Chemical Company
* DPCX - Blue Circle, Inc.
* DPDZ - Delaware and Hudson Railway
* DPGX - Tractech Systems
* DPIX - Dufour Petroleum, Inc.
* DPLX - Davenport Cement Company
* DQE - De Queen and Eastern Railroad
* DR - Dardanelle and Russellville Railroad
* DRAX - DRAYCUTT Corporation
* DRCX - Martin Marietta Corporation
* DRDX - The Duredo Company
* DREX - ProTrade Steel Company
* DRG - Denver and Rio Grande Railroad
* DRGW - Denver and Rio Grande Western Railroad; Southern Pacific Railroad; Union Pacific Railroad
* DRGX - Denver and Royal Gorge Railway
* DRHY - Durham Transport
* DRI - Davenport, Rock Island and North Western Railway
* DRIR - Denver Rock Island Railroad
* DRMX - Danbury Railway Museum
* DRR - Delaware and Raritan River Railroad
* DRR - Disneyland Railroad
* DRRV - Dover and Rockaway River Railroad
* DRSX - D.O.T. Rail Services, Inc.
* DRTU - Dart Intermodal, Inc.
* DRTZ - Dart Intermodal, Inc.
* DSBU - Ameribrom, Inc.
* DSCX - DIFCO, Inc.
* DSDX - Pullman Leasing Company
* DSEX - East Carbon Development Company
* DSIX - Dowell Schlumberger, Inc.
* DSLX - DeGussa Corporation
* DSLZ - Intermodal Services, Inc.
* DSRC - Dakota Southern Railway
* DSRR - Delta Southern Railroad
* DSRX - Downeast Scenic Railroad (and its parent organization, Downeast Rail Heritage Preservation Trust, Inc.)
* DSSA - Duluth, South Shore and Atlantic Railway
* DSSX - Detroit Salt Company, LLC
* DT - Decatur Junction Railway
* DTCX - DTE Transportation Services, Inc.
* DTEX - Dresser Transportation Equipment (Division of Dresser Industries)
* DTI - Detroit, Toledo and Ironton Railroad; Grand Trunk Western Railroad; Canadian National Railway
* DTIZ - Grand Trunk Western Railroad; Canadian National Railway
* DTLX - Delta Tank Line Company
* DTRR - Danbury Terminal Railroad; Housatonic Railroad
* DTS - Detroit and Toledo Shore Line Railroad; Grand Trunk Western Railroad; Canadian National Railway
* DTTX - TTX Corporation
* DTZZ - Direct Transit, Inc.
* DUCX - DuPont Canada, Inc.
* DUFX - Duffy and Sons, Inc.
* DUKX - Dupps Company
* DUPX - DuPont
* DUT - Denver Union Terminal Railway
* DUTC - Dallas Union Terminal
* DV - Delaware Valley Railway
* DVLX - Duval Corporation; Freeport-McRo-Ran Sulphur Company
* DVR - Devco Railway; Cape Breton Development Corporation (Coal Division); Sydney Coal Railway (its successor)
* DVRU - Dover, Ltd.
* DVS - Delta Valley and Southern Railway
* DVSZ - Delta Valley and Southern Railway
* DVTX - SULCOM, Inc.
* DW - Detroit and Western
* DWAU - Degussa Antwerpen, NV
* DWC - Duluth, Winnipeg and Pacific Railway; Canadian National Railway
* DWCX - David Witherspoon, Inc.
* DWML - Due West Motor Line
* DWP - Duluth, Winnipeg and Pacific Railway; Canadian National Railway
* DYLX - Ronald L. Boothman Remainder Trust; Transportation Equipment
* DYNX - Dyno Nobel, Inc.
* DYRX - Dynamic Rail Preservation Inc.
