No specific published evidence has been identified detailing the revision of the Group Standard for crashworthiness, particularly concerning design requirements for realistic scenarios, high-speed accidents, or dynamic verification testing. While gov.uk search results indicate the topic 'revise crashworthiness group' has 6,174 results and 'review crashworthiness standard' has 13,402 results, the content of these results is not provided to confirm specific actions or outcomes of such a revision.