asked the Secretary of State for the Environment (1) how many miles of motorways and dual carriageways, respectively, were opened in England in the period 1965 to 1975;(2) how many miles of motorways and dual carriageways, respectively, there are under construction in England.

764·4 miles of trunk motorways were opened in England in the period April 1965 to 11th July 1975, and 625 miles of trunk dual carriageways in the period April 1966 to 11th July 1975.Annual records were not kept for dual carriageways prior to April 1966.166·5 miles of motorway and 173·7 miles of dual carriageways are currently under construction.