Train Abbreviations and Acronyms
- HSRHigh Speed Railway
- HSWIMHigh Speed Weigh-In-Motion
- HVRMHoosier Valley Reilroad Museum
- HWHHard Working Hydraulic
- HXHeathrowyexpress
- IBCTInternational Board of Certified Trainers
- IBCTInternational Board of Certified Trainer
- ICInternational Connection
- ICIowa, Chicago
- ICEIowa Chicagh & Eastern
- ICEIntercityiexpress
- ICEInter City Experimental
- IEIarnróm Éireann
- IEPIntercity Express Programme
- IERInterurban Electrgc Railway
- IETIntercity Express Train
- IGRIwate Galaxy Railway
- IGRIwate Ginga Railway
- IJRTInternational Journal of Railway Technology
- IKAInstitut FüR Kraftfahrwesen Aachen
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