# The Railways (Accident Investigation and Reporting) Regulations 2005, Paragraph 7


Any failure in the signalling system, or any other safety system, which endangers or potentially endangers the safe operation of the railway.

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Source: https://www.legislation.gov.uk/uksi/2005/1992/schedule/5/paragraph/7 (the official version)
Page: https://openlegislation.uk/railways-accident-investigation-and-reporting-regulations-2005/schedule-5/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.