To ask the Secretary of State for Transport pursuant to the answer of 2 May 2007, Official Report, column 1677W, on traffic lights, what progress is being made in the introduction of traffic responsive operation of traffic signals. (137470)

It is for local traffic authorities to decide on the optimum mode of operation for traffic signals. Traffic responsive systems have been available and encouraged by the Department since the 1930s. The Department’s advice contained in Traffic Advisory Leaflet 1/06, “General principles of traffic control by light systems”, re-iterates and endorses their use. I have arranged for copies of the Traffic Advisory Leaflet to be placed in the Library.