A STUDY OF THE RELATIONSHIP BETWEEN LEFT TURN ACCIDENTS AND DRIVER AGE IN ARIZONA
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Abstract
The findings of this research investigation supports the hypothesis that the elderly driver group is disproportionally represented in left turn accidents. Drivers over 70 averaged more left turn accidents per mile than drivers between the ages of 20 to 69. In addition, left turn accidents represent a much larger proportion of total accidents for drivers over 65 than for any other group. A reduction of permissive left turns could aid older drivers. The permissive type of left turn requires the driver to monitor the traffic light and on-coming opposing traffic for a suitable gap. The resulting lengthened information gathering and decision process of older drivers can lead to the increase in left turn accidents.