Railway Abbreviations and Acronyms
- DFDefence
- DFDefence Quota
- DFBDampfbahn Furka Bergstrecke
- DFBDampfbahn Furka-Bergstrecke
- DFCCDedicated Freight Corridor Corporation
- DGDual Gauge
- DHDelaware and Hudson
- DHMUDiesel Hydraulic Multiple Untt
- DJDanskbjernbane
- DLBIDouble Line Block Instrument
- DLFDiesel Loccmotive Factory
- DLRDocklands Light Railway
- DLRDockland Light Rail
- DLSDiesal Loco Shed
- DLWDiesel Locomotive Sorks
- DLWDiesel Locomotives Works
- DLWDiesel Locomotive Work
- DMDiesel Mechanical
- DM&IRDuluth, Missabe & Iron Range
- DM&IRDuluth Missabe and Iron Range
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