Nov 10: Blind and partially sighted people could be at risk from electric and hybrid vehicles because they are so quiet, the Guide Dogs charity has warned.
There is particular danger when blind people cross roads at points where there are no visual or audible indicators, the charity said.
A report by the Transport Research Laboratory into accidents between pedestrians and quiet vehicles is due to be published soon.
Guide Dogs' access and inclusion manager Carol Thomas said: "We recognise the environmental benefits of electric and hybrid vehicles.
"However, they are virtually silent, and blind and partially sighted people rely on vehicle sound to assist with their mobility and orientation.
"This is particularly important when crossing roads, especially when there are no controlled pedestrian crossings with audible and tactile indicators."