§ Mr. Tim SmithTo ask the Secretary of State for Transport if he will take steps to ensure that the carriageways of the M40 between junction 1 and Windsor road, Gerrards cross, which are currently under repair are resurfaced with pervious macadam rather than hot rolled asphalt.
§ Mr. Chope[holding answer 1 July 1991]: We are not able to justify the use of pervious macadam on this section of motorway. Pervious macadam costs more than conventional road surfacing and requires more frequent renewal maintenance. Further research is continuing on the use of this type of surfacing and it is hoped that in due course the causes of the additional costs will be overcome.