Road Traffic Control

Department for Transport written question – answered at on 8 March 2018.

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Photo of Ruth George Ruth George Labour, High Peak

To ask the Secretary of State for Transport, whether his Department has made an assessment of the evidence base for traffic-calming measures introduced recently in (a) Derbyshire and (b) the rest of the UK.

Photo of Jesse Norman Jesse Norman Parliamentary Under-Secretary (Department for Transport)

Installation of traffic calming measures is the responsibility of the relevant local highway authority.

Traffic calming provides a proven and effective way of saving lives and reducing casualties. Its primary purpose is to reduce vehicle speeds in areas where inappropriate speed is a problem. It plays an important role in improving road safety, and each 1 mph reduction in vehicle speed resulting from traffic calming has been found to reduce accidents by around 5%.

Traffic calming has been the subject of extensive research. The Department publishes advice for local authorities on designing and installing traffic calming, in Local Transport Note 1/07: Traffic Calming, available at This brings together a summary of the research commissioned by the Department and its predecessors, together with some research from external sources, to provide advice on the use of traffic calming measures today.

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