Assessing Mileage Exposure and Speed Behavior Among Older Drivers Based on Crash Involvement Status

Population and crash projections for the year 2030 suggest that drivers age 65 and older will represent one quarter of total population and one quarter of motor vehicle-related fatalities. The full implications of these trends in terms of crash reduction measures such as operator education, self-regulation, and licensing regulations are unknown. However, for any of these crash reduction measures to be effective, it is first imperative to understand and identify older driver behavior (or activity patterns). Only then can data be linked with crash involvements to determine effective countermeasures allowing safe mobility for older persons. This study investigates the driving patterns of seniors who have and who have not experienced a crash during a six-month study period using the longitudinally collected GPS trip data. This investigation allows for an empirical investigation to determine if older drivers with a recent crash experience drive differently in terms of speed, time of day, or roadway types. This study found that crash-involved older drivers usually traveled longer distances and traveled at higher speeds than older drivers who were not involved in crashes. While travel on freeways between the two groups showed significant mileage and speed differences, the crash-involved older drivers were more likely to use the freeway and drive with higher speeds than drivers who were not involved in crashes. This study suggests that transportation safety engineers and policy makers should also aim speed campaigns to older drivers. Traditionally, older drivers have not been a target population for these types of campaigns.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: References; Tables;
  • Pagination: 16p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01044909
  • Record Type: Publication
  • Report/Paper Numbers: 07-2916
  • Files: BTRIS, TRIS, TRB
  • Created Date: Feb 8 2007 7:37PM