https://www.gov.uk/raib-reports/safety-digest-06-slash-2022-overspeeds-in-weather-related-blanket-emergency-speed-restrictions
Safety digest 06/2022: Overspeeds in weather-related blanket emergency speed restrictions - GOV.UK
Safety digest into overspeeds in weather-related blanket emergency speed restrictions on Western and Wales routes, 18 and 19 July 2022.