A study of older women drivers in the Mon Valley, Pennsylvania found that persons over age 85 years were the individuals most likely to make the decision to stop driving.

In this group, driving cessation was also strongly linked to health status. The likelihood of stopping driving increased strongly with co-morbidity.

Source: Forrest K, et al. Driving Patterns and Medical Conditions in Older Women. J Amer Ger Society 45:1214-1218, 1997