Fitness to drive a car after recovery from severe head injury.

Driving skills in relation to residual psychologic impairments were studied in a sample of patients who had survived severe head injuries several years earlier. Daytime driving was studied in an instrumented car that recorded lateral position control on a highway track and during rides in the subjects' own cars with a professional observer. In comparison with a control group matched by age and driving experience, the patients performed worse on both driving tasks.