title: Older driver fitness-to-drive evaluation using naturalistic driving data.
abstract: OBJECTIVE
  As our driving population continues to age, it is becoming increasingly important to find a small set of easily administered fitness metrics that can meaningfully and reliably identify at-risk seniors requiring more in-depth evaluation of their driving skills and weaknesses.
  
  
  METHODS
  Sixty driver assessment metrics related to fitness-to-drive were examined for 20 seniors who were followed for a year using the naturalistic driving paradigm. Principal component analysis and negative binomial regression modeling approaches were used to develop parsimonious models relating the most highly predictive of the driver assessment metrics to the safety-related outcomes observed in the naturalistic driving data.
  
  
  RESULTS
  This study provides important confirmation using naturalistic driving methods of the relationship between contrast sensitivity and crash-related events.
  
  
  CONCLUSIONS
  The results of this study provide crucial information on the continuing journey to identify metrics and protocols that could be applied to determine seniors' fitness to drive.
authors.affiliation: Virginia Tech Transportation Institute, 3500 Transportation Research Plaza, Blacksburg, VA 24061, USA. Electronic address: feng.guo@vt.edu.
authors.forename: Feng
authors.initials: F
authors.lastname: Guo
authors.affiliation: Virginia Tech Transportation Institute, 3500 Transportation Research Plaza, Blacksburg, VA 24061, USA. Electronic address: youjia@vt.edu.
authors.forename: Youjia
authors.initials: Y
authors.lastname: Fang
authors.affiliation: Virginia Tech Transportation Institute, 3500 Transportation Research Plaza, Blacksburg, VA 24061, USA. Electronic address: jantin@vtti.vt.edu.
authors.forename: Jonathan F
authors.initials: JF
authors.lastname: Antin
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control*; D000368:Aged; D001334:Automobile Driving; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D010809:Physical Fitness; D018570:Risk Assessment; D012449:Safety
keywords: Contrast sensitivity; Driving risk; Fitness to drive; Naturalistic driving study; Older driver