HC Deb 23 February 1978 vol 944 c766W
Mr. Wiggin

asked the Secretary of State for Transport what percentage of drivers and front seat passengers are estimated to use their seat belts after an advertising campaign; and for how long such an improvement can be detected.

Mr. William Rodgers

The national average percentage of people wearing belts following a campaign has varied between 30.9 per cent. and 33.2 per cent. for drivers and between 30.8 per cent. and 36.5 per cent. for front seat passengers. There is normally a gradual reduction in the wearing rate after a campaign has ended, but surveys to detect the rate of reduction have not been carried out.