This explains why your chances of having an auto accident are three times greater at night than in the daylight. When older, we also lose depth perception and the ability to distinguish contrast. Ten percent of all drivers are 65 or older. Driving skills are rarely impaired in healthy drivers over 65 but then few of us are totally healthy.
Age alone is a poor predictor of driving expertise.
Night driving skills are likely to be lost first. After falls, driving accidents are the second leading cause of accidental death. After 75, admission to hospital for car accidents is twice that of younger adults. First, the car. I invest primarily on safety when buying a car - air bags, power brakes and power steering.