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Acting on behalf of judicial and public authorities, the Swiss Transportation Safety Investigation Board (STSB) investigates railway, cableway, roadway and waterway accidents that have caused serious injuries, fatalities and major material damage. It also examines civil aviation incidents.
The STSB was created on 1 November 2011 out of a merger between the Aircraft Accident Investigation Bureau (AAIB) and the Investigation Bureau for Railway, Funicular and Boat Accidents (IRFBA). The merger of these two bodies enables expertise to be centralised and ensures that accident investigations are conducted in a uniform fashion. The STSB reports to an extra-parliamentary commission that decides which organisational unit within the STSB will conduct the actual investigations. This commission also reviews investigation reports.
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