§ Mr. Crausby
To ask the Secretary of State for the Environment, Transport and the Regions what estimate he has made of the proportion of car owners who use motorways less than once a month; and what proportion never use motorways. 
§ Mr. Hill
The main source of information on travel patterns of car drivers, and others, is the National Travel Survey which does not identify use by road type. For the general population, the 1997 Road User Satisfaction Study, commissioned by the Highways Agency, showed that 22 per cent. of respondents had not used a motorway in the previous year and a further 34 per cent. had used a motorway less than once a month.
In terms of total car traffic, measured in vehicle miles, around 17 per cent. was on motorways in 1998.