Older Driver Performance Data Synthesis

Conventional wisdom holds that older drivers reduce their crash risk by self-regulating, that is, limiting their driving to situations they believe they can navigate safely. However, crash data show that older drivers are still more likely than middle-aged drivers to contribute to crashes. In addition, crash rates based on population are likely to understate the risk per mile for those who drive the fewest miles (generally the oldest and youngest drivers). The National Highway Traffic Safety Administration has sponsored multiple older driver studies within the past decade that included naturalistic observations of driving exposure, often incorporating similar methods and measures to gauge everyday driving habits. Within the same period, the Transportation Research Board sponsored the Strategic Highway Research Program 2 Naturalistic Driving Study (NDS), which included over a thousand participants 60 and older. The objective of this project is to combine the data from the previous NHTSA studies to obtain more statistical power for determining how age, sex, clinical scores, and on-road driving scores affect driving exposure and behaviors. Analyses of the NDS data will further the understanding of the relationship between functional measures, driving habits and exposure based on a much longer exposure period than the NHTSA data. Clinicians who work with older adults will benefit from understanding the extent to which older drivers match their functional abilities to their choices of when and where to drive. Driving evaluators will benefit by enhancing their ability to provide recommendations to improve the safety of their clients. Older drivers and their families will benefit from educational materials based upon the results.


    • Status: Active
    • Funding: $230114
    • Contract Numbers:



    • Sponsor Organizations:

      National Highway Traffic Safety Administration

      1200 New Jersey Avenue, SE
      Washington, D.C.  United States  20590
    • Managing Organizations:

      National Highway Traffic Safety Administration

      1200 New Jersey Avenue, SE
      Washington, D.C.  United States  20590
    • Project Managers:

      Sifrit, Kathy

    • Performing Organizations:

      TransAnalytics, LLC

      336 West Broad Street
      Quakertown, PA  United States  18951
    • Principal Investigators:

      Sifrit, Kathy

    • Start Date: 20180913
    • Expected Completion Date: 20210000
    • Actual Completion Date: 0
    • USDOT Program: Behavioral Safety Research
    • Subprogram: Older Driver

    Subject/Index Terms

    Filing Info

    • Accession Number: 01681817
    • Record Type: Research project
    • Source Agency: National Highway Traffic Safety Administration
    • Contract Numbers: 693JJ918F000149, DTNH2216D00010
    • Files: RIP, USDOT
    • Created Date: Sep 24 2018 12:21PM