RAIB meaning

RAIB (Rail Accident Investigation Branch) is the independent investigator of rail accidents and serious incidents, whose no‑blame safety reports are frequently used in inquests, Fatal Accident Inquiries (Scotland), regulatory matters and related civil claims for factual and technical context. It was established by Part 1 of the Railways and Transport Safety Act 2003 and operates under the Railways (Accident Investigation and Reporting) Regulations 2005. RAIB investigates occurrences on the rail system in Great Britain (England, Wales and Scotland), including mainline, light rail, metro, tram and heritage rail. It does not determine civil or criminal liability and is not an enforcement body; compliance and prosecutions are for the Office of Rail and Road and the police. RAIB issues safety recommendations (not legally binding) to dutyholders, who must respond formally. Its reports are published. Certain evidence it gathers (such as witness statements and recordings) is protected by statute with restrictions on disclosure and admissibility in proceedings. Jurisdiction differs outside Great Britain: in Northern Ireland separate arrangements apply; in Ireland (Republic), the equivalent body is the Railway Accident Investigation Unit (RAIU) under the Railway Safety Act 2005. Lawyers typically cite RAIB reports for causation analysis, timelines and safety context.