Abstract
Most older adults rely on the automobile to maintain their mobility and independence, in spite of the fact that age-related behavioral and biomedical changes may make driving more difficult. Accidentsand fatality rates begin to rise after age 55. One reseasrch goal, therefore, is to identify functional measures that differentiate older adults who drive safely from those who do not. This paper discusses conceptual and methodological issues invovled in addressing this question, considers why earlier research has been largely unsuccessful, presents a working model for approaching the problem, and arguesthe need for large-sample, prospective research in this area.