This report describes the recent history of hazard perception testing using computer-based moving image technology, and sets out the background to the decision to incorporate a hazard perception component into the Theory Test that learner drivers in the UK must pass before taking a practical driving test. Previous research has shown that hazard perception improves with driving experience, is related to accident liability, and is capable of improvement through training. For a test to be suitable for inclusion in the licensing process, it must be psychometrically sound, have a standardised scoring system, and be available in a number of parallel forms. The main body of the report describes the development work that was undertaken to meet these criteria, and also reports on trials showing that the mean scores of learner drivers could be increased to those of experienced drivers by a short programme of focused training. (A)

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