Types of accidents and violations were compared for 1701 drivers with chronic medical conditions known to the California Department of Motor Vehicles and 921 drivers not known to have medical conditions. Drivers without medical conditions were found to be innocent in about 1/2 of their accidents, whereas those with alcoholism were innocent in only 13 percent and drivers with other medical conditions in 1/3 of their accidents. A greatest proportion of the accidents of drivers with medical conditions involve leaving or running off the road, momentary inattention, collision of a single vehicle only, or collision with a parked or stopped car. Drivers with greater severity of illness, or who were obviously impaired at the time of the accident had more accidents attributed to weaving or running off the road or involving a single vehicle or parked car, whereas those with mild illness have a greater proportion attributed to inattention. Drivers under age 30 have a greater proportion of accidents related to risk-taking activity, such as excessive speed for conditions and following too closely, whereas drivers age 60 or older had a greater proportion of driving incidents suggestive of inability to perceive, properly judge, or adequately respond to traffic flow, for example, incidents involving failure to observe a traffic signal or right of way. Drivers with epilepsy who always had aura, petit mal seizures, or nocturnal seizures had fewer accidents per million miles than did drivers who occasionally or never had aura or nocturnal seizures, or who had grand mal seizures. However, the samples were small, and the observed differences were not statistically significant. (Author)
Accident and Violation Patterns of Drivers with Chronic Medical Conditions
1967
36 pages
Report
No indication
English
Industrial Safety Engineering , Clinical Medicine , Motor vehicle accidents , Motor vehicle operators , Statistical analysis , Diseases , Addiction , Alcohols , Attention , Aging(Physiology) , Perception(Psychology) , Epilepsy , Cardiovascular diseases , Abnormal psychology , Narcotics , Mental disorders , Diabetes
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