§ Mr. Fryasked the Secretary of State for Transport what is the projected average annual traffic density, in terms of passenger miles and freight ton miles per mile of track, of all motorways where contracts have been let in the last available period.
§ Mr. William RodgersI regret that the information is not available in the form requested. Motorways are currently designed for traffic levels expected 15 years after the road is opened. Dual two-lane and dual three-lane motorways are normally designed for capacities of 35,000–48,000 vehicles per day, and 45,000–72,000 vehicle per day respectively. The proportion of heavy vehicles is typically 15 per cent.