Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment his Department has made of the lost capacity in the road network from dual carriageways with two lanes that have been narrowed to a single lane by road markings or by any other means (a) since 1997 and (b) in any other period for which he holds data.

In England traffic authorities have powers under the Road Traffic Regulation Act 1984, to regulate, restrict or prohibit the use of the highway for a wide range of safety and environmental reasons.

It is for individual local authorities to decide on the nature and scope of their traffic management schemes, and to balance the needs of residents, emergency services, local businesses, and those who work in and visit those areas.