An in-depth guide to speed cameras
Drivers travelling at higher speeds have less time to identify and react to what is happening around them. It takes longer for the vehicle to stop. And the crash will be more severe, causing greater injury to the occupants and any pedestrian or rider hit by the vehicle.
Higher speeds also increase the severity of an injury in a collision. Approximately two-thirds of all crashes in which people are killed or injured happen on roads with a speed limit of 30 mph or less.
Inappropriate speed (exceeding the speed limit and driving too fast for the conditions) contributes to 11% of all injuries, 15% of serious injuries and 24% of deaths on the road. Almost 350 people are killed each year on Britain's roads, and over 2,500 are seriously injured, because drivers and riders travel too fast.
Our speed cameras factsheet provides an overview of the evidence surrounding speed cameras and their effectiveness, concluding that speed cameras are a very effective way of persuading drivers not to speed, and thereby reducing the number of people killed and seriously injured.