On average, 10 people die and 100 people are seriously injured on Great Britain's roads each day.
Two-thirds of all crashes in which people are killed or injured happen on roads with a speed limit of 30mph or less. At 35mph a driver is twice as likely to kill someone as they are at 30mph.
hit by a car at 40mph, 9 out of 10 pedestrians will be killed
hit by a car at 30mph, around 50 per cent of pedestrians will survive
hit by a car at 20mph, only 1 out of 10 pedestrians will be killed.
Accident risk rises the faster a driver travels. At 25 per cent above the average speed, a driver is about six times more likely to have an accident than a driver travelling at the average speed.
At 30mph, vehicles travel 44 feet (about three car lengths) every second. Even in good conditions, the difference in stopping distance between 30mph and 35mph is an extra 21 feet, more than two car lengths.
The purpose of safety cameras is to change driver behaviour. They are only used when people break speed limits. When this happens a camera detects the offence and provides evidence for a fixed penalty notice.
Speed cameras and traffic enforcement in Hounslow
Speed cameras are used in Hounslow to enforce traffic regulations and to help improve the safety of the borough's roads using safety cameras.
The London Safety Camera Partnership is responsible for implementing a comprehensive camera safety programme to reduce speed and road crash casualties throughout London. Locations of cameras can be found on its website (see external links on this page).