§ Mr. Bob RussellTo ask the Secretary of State for the Environment, Transport and the Regions what assessment he has made of evidence that road humps cause increases in vehicle exhaust pollution. [46984]
§ Ms Glenda JacksonIn 1994, my Department commissioned the Transport Research Laboratory (TRL) to carry out a literature review of research that had been carried out world-wide into the effects that traffic management schemes (including traffic calming) might have on vehicle emissions. These results are summarised in Traffic Advisory Leaflet 4/96 "Traffic Management and Emissions", copies of which have been placed in the Library. A further research project is specifically examining the effects of traffic calming measures, including different types of road humps. The results of this work will be available in November 1999.