Driver Exposure. Indirect Approach for Obtaining Relative Measures

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Driver Exposure. Indirect Approach for Obtaining Relative Measures

E. C. Cerrelli

The efforts in the study are aimed at obtaining a measure of the exposure which a class of drivers experiences relative to other similar classes. These driver classes have been identified by age group and sex. A measure of relative exposure was estimated for each of the classes under varying environmental conditions. The sources of data were the Driver Licensing and all Motor Vehicles Accident records as kept by 25 States for the year 1969. These States account for over 50% of the driving population and submitted records on over 1.7 million accidents involving two or more vehicles. The study subdivides the accident involved driver classes (age-sex) into two groups: the responsible and the not responsible. By analyzing the not responsible group a measure of relative exposure is obtained while the analysis of the responsible group yielded an indicative measure of the risk associated with each driver class. (Author)