According to a study by the Rand Corporation, drivers over the age of 65 are two-thirds less likely to be in a car accident than drivers between the ages of 18-25. Further, the oldest drivers are only 16% more likely to be in an automobile accident than drivers between the ages of 26-64, which was a much smaller difference than is commonly believed.
Though older drivers have slower reflexes and deteriorating skills that woudl certainly make them more likely to be in a car accident, they compensate by avoiding riskier driving conditions, and many stop driving when their skills and senses become too impaired. However, older drivers are much more likely to die in an automobile accident than younger drivers, because they are frailer.