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Terminology

173 bytes added, 22:40, 12 May 2020
Add ORR
;NR:Network Rail
;NRM:National Railway Museum
;ORR:Office of Rail and Road, formerly Office of Rail Regulation, the independent safety and economic regulator for Britain's railways which includes HM Railway Inspectorate;OTMR:On-Train Monitoring Recorder, a device similar in principle to the flight data recorder found on aircraft.
;OW&W
;OWW:Oxford Worcester and Wolverhampton Railway
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