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Objective: To evaluate potential associations of impairments in physical function with motor vehicle crash involvement in older drivers. Methods: Case participantss were randomly selected residents of Mobile County, Alabama, &gte;65 years old who had sustained an at-fault motor vehicle crash in 1996. Similarly selected crash-free controls were frequency matched to cases on gender and age. Self-report data on demographic variables, medical conditions, medications, driving exposure, and function were collected by telephone interviewers. Results: Relative to crash-free subjects, crash-involved drivers were significantly more likely to report difficulty walking 1/4 mile and moving outdoors. Marginally significant associations were observed for trouble carrying a heavy object 100 yards and for the occurrence of falls in the prior year. Increasing numbers of functional limitations were directly related to the odds of crash involvement. Discussion: In comparison to crash-free controls, crash-involved older drivers are more likely to report other mobility-related impairments, possibly including falls. [ABSTRACT FROM AUTHOR]