In a simulation of a collision between a scooter rider and a pedestrian with a weight and height profile of an average elderly person, the probability of a serious head injury is about 70 per cent for a collision speed of 15kmh, and about 30 per cent for 10kmh, says Prof Yap.
"We estimate that a reduction in speed from 15kmh to 10kmh reduces the stopping distance required by about a metre. This is significant as it allows more room to avoid a collision."
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