The relationship between speed cameras and road deaths

TRAFFIC cameras are always controversial. Proponents maintain that an increase in their number results in fewer deaths on the roads. Opponents grumble that they are merely money spinners for local governments at the motorist's expense. Drivers in Edmonton, Canada, will be refunded for speeding fines issued since November 2009 because of a technical glitch with a particular camera. In Britain, the government's claims over improved safety were rebuffed by the British Medical Journal, and local councils have begun to turn off cameras. Research carried out recently in Australia by Queensland University points the other way, showing cameras do reduce accidents. The arguments will continue. Our chart shows that the effectiveness of traffic cameras is inconclusive, perhaps because many other factors contribute to road safety, such as population density, the condition of vehicles and roads, and other pedestrian-protection measures.