Abstract
During October and November 1988 a safety belt campaign was held under military personnel. The campaign was aimed on young, male car drivers in the age between 18- 25. This group is known to use the safety belt less than other groups. In spite of the obligation the average percentage of safety belt use is only 55 to 60% for this group. To evaluate the effects of this campaign a field study was carried out in which the level of surveillance, the quantity and kind of publicity, and the type of reward programme was varied.