title: Predicting on-road driving performance and safety in healthy older adults.
abstract: BACKGROUND
  This study evaluated the ability to predict the on-road driving of older drivers using a battery of laboratory-based instruments.
  
  
  METHODS
  The Roadwise Review, a brief Hazard Perception Test and several tests of vision were given to 65 cognitively healthy, licensed older drivers (M = 74 years, SD = 9 years). They also participated in a standardized driving assessment of approximately 18 km, along a mixed residential and commercial route.
  
  
  RESULTS
  Raw scores on the Roadwise Review did not predict accumulated points, or automatic disqualifications, but could predict who would pass or fail the on-road evaluation. The number of serious problems (excluding head and neck flexibility) that were identified by the Roadwise Review was a significant predictor of automatic disqualifications, and a significant predictor of passing or failing the on-road assessment. The Hazard Perception Test approached significance when predicting accumulated points and was a significant predictor of automatic disqualifications, as well as pass/fail outcomes.
  
  
  CONCLUSIONS
  The best model for predicting passing or failing the on-road assessment included the Hazard Perception Test, color vision, and, a measure of walking speed from the Roadwise Review, which yielded a sensitivity of 82% and a specificity of 69% (AROC = .80). Future work will need to determine how these tests can be used with other information (e.g., medical history) to yield better diagnoses of fitness to drive, particularly among those who are medically at risk.
authors.affiliation: Department of Psychology, University of Calgary, 2500 University Drive, N.W. Calgary, T2N 1N4 Alberta, Canada.
authors.forename: Rachel W
authors.initials: RW
authors.lastname: Jones Ross
authors.affiliation: Department of Psychology, University of Calgary, 2500 University Drive, N.W. Calgary, T2N 1N4 Alberta, Canada.
authors.forename: Sheila T D
authors.initials: ST
authors.lastname: Cordazzo
authors.affiliation: Department of Psychology, University of Calgary, 2500 University Drive, N.W. Calgary, T2N 1N4 Alberta, Canada. Electronic address: scialfa@ucalgary.ca.
authors.forename: Charles T
authors.initials: CT
authors.lastname: Scialfa
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001333:Automobile Driver Examination; D001334:Automobile Driving; D005260:Female; D015577:Geriatric Assessment / Q000379:methods*; D006801:Humans; D008297:Male; D012372:ROC Curve; D016059:Range of Motion, Articular; D014787:Vision Tests
keywords: Driving performance; Hazard Perception Test; Older adults; Roadwise Review