This study examined differences in continuous risk perception between two groups of drivers, those with repeated traffic accidents and those without. We presented twenty participants from each group a set of fifteen visual scenes shot from the passenger seat of a car; each scene was presented for 30 to 120 seconds. We recorded continuous risk perception, using the risk estimation lever. There were no significant differences between accident repeaters and safe drivers in variables that represent scenes such as maximum estimated risk, total estimated risk, or control frequency of the lever. However, there were many differences in shapes of the mean estimated risk curve of each group. Accident repeaters did not perceive risk from potential hazards such as blind intersections, and their risk perception from obvious hazards such as pedestrians, bicycles or other cars was delayed compared to that of safo drivers. Mutual correlation analysis of mean curves of each group revealed the total delay of risk perception of accident repeaters in three scenes. Safe drivers estimated risk from potential hazards by experience or knowledge. However, accident repeaters tended to perceive risk only from the obvious traffic environment.
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