§ Mr. FlynnTo ask the Secretary of State for Transport what has been the effect on accident levels on roads where speed retarders, such as sleeping policemen, have been introduced.
§ Mr. Atkins[holding answer 6 November 1989]: The urban safety projects conducted jointly by the Department and local authorities indicate that low-cost "traffic calming" measures including road humps can reduce casualties by 10 to 15 per cent. in residential areas. Earlier trials road humps at selected sites (TRRL Digest LR878) achieved 50 per cent. casualty reductions. The new regulations we are making shortly will aid their use.