HC Deb 22 May 1963 vol 678 cc44-5W
Mr. W. Hamilton

asked the Secretary of State for Scotland what statistics he has showing the extent of the overloading of trunk and classified roads, respectively; and whether he will publish them in the OFFICIAL REPORT.

Mr. Noble

There is a design capacity for each standard of construction: this capacity is not the maximum flow attainable but is one which allows reasonable opportunities for drivers to overtake slower vehicles and maintain their speeds: it allows occasional high peaks of traffic to be carried but with less freedom of movement and at a reduced speed. At the trunk road census in August, 1961, the latest convenient date, traffic on 76 per cent. of the trunk road mileage in Scotland did not exceed the design capacity on the remaining 24 per cent. it did to a lesser or greater degree. I have no comparable up-to-date statistics for classified roads in Scotland.