SUMMARY – sometimes the driver sees the motorcycle but miscalculates ‘time to collision’… the rider may make it difficult for the driver to judge speed and distance by travelling faster than surrounding traffic… the size-arrival effect means smaller, nearer objects are incorrectly judged to arrive LATER than larger, more distant objects…  compared with cars and vans, the ‘time to arrival’ of motorcycles is estimated to be significantly later… riders exceeding speed limits are more likely to be killed in a collision…

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