Sleepiness and hazard perception while driving

The relationship between driver experience and sleepiness is not known. A sample of 34 young, and inexperienced, drivers (aged 17- 24 years, with less than three years driving experience) and 33 older, and experienced, drivers (aged 28-36 years, with at least ten years driving experience) completed a video-based hazard perception task, in which they were instructed to anticipate a range of genuine traffic conflicts filmed locally. Their average response time to the traffic conflicts was calculated. Drivers were either tested at a time of increased sleepiness (3am) or at a point of decreased sleepiness (10am). As expected, the young, inexperienced drivers were significantly slower at identifying hazards than were the older, experienced drivers. While no overall effect of sleepiness on hazard perception was found, inexperienced drivers were slower on this measure at night. It appears that the hazard perception skills of the older, more experienced, drivers were relatively unaffected by mild increases in sleepiness while the hazard perception skills of the younger, inexperienced drivers, were significantly slowed by a mild increase in sleepiness. The results may explain the increased risk of driving while sleepy for young adult drivers. Sleepiness impairs elements of driving performance that are critical to safe driving, including hazard perception. (a)

  • Availability:
  • Authors:
    • SMITH, S
    • HORSWILL, M
    • CHAMBERS, B
    • WETTON, M
  • Publication Date: 2009-4

Language

  • English

Media Info

  • Pagination: 18P
  • Serial:
    • ROAD SAFETY GRANT REPORT
    • Issue Number: 2009-001
    • Publisher: DEPARTMENT OF INFRASTRUCTURE, TRANSPORT, REGIONAL DEVELOPMENT AND LOCAL GOVERNMENT, AUSTRALIA
    • ISSN: 1323-3688

Subject/Index Terms

Filing Info

  • Accession Number: 01143864
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Nov 16 2009 12:10PM