SUMMARY – collisions between cars and motorcycles increase when it’s dark… drivers misjudge ‘time to collision’ more often when motorcycles have single headlights… retro-reflective material is often too high up or the approaching bike is at the wrong angle for the car’s lights to illuminate it… garments used at night feature blocks, stripes or even random patches of retro-reflective material and fail to create a recognisable shape…

 

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Photo credit Paul Townsend
https://www.flickr.com/photos/brizzlebornandbred/20001313491