Use of safety belts : investigation into the effect of obligatory use of safety belts on the volume of use.

Investigation were done to the use of seat belts after the obligation of wearing them in Finland at July 1, 1975. This report deals with the results of the first two phases of the investigation: the use of safety belts before the obligation and immediately after safety belts were made compulsory. The use of safety belts was observed on highways on weekdays and on Sundays, on exit roads at peak hours and in urban areas during the day and at peak hours.