HEADLIGHT FACTORS AND NIGHTTIME VISION

The study examined the feasibility of using information concerning driver scan pattern data in the analysis of headlamp effectiveness. The driver-subjects were unaware that their eye movements were being recorded. In Experiment I, eighteen subjects drove over rural two-lane roads with indigenous targets under daytime conditions and six headlight configurations. The major independent variables included headlamp type, target type and reflectivity, road geometry, and glare versus no-glare. Dependent measures were average dwell point, scan pattern distribution, and target detection distance. In Experiment II, target detection distances were obtained for 22 subjects under unalerted and then alerted conditions.

  • Corporate Authors:

    Honeywell Incorporated

    Systems and Research Center, 2600 Ridgeway Parkway
    Minneapolis, Minnesota 55413,   USA 

    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Graf, C P
    • Krebs, M J
  • Publication Date: 1976-11

Media Info

  • Pagination: 102 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00151150
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: 76-SRC/13 Final Rpt.7406-76-8, DOT-HS-802-102
  • Contract Numbers: DOT-HS-4-00957
  • Files: NTIS, TRIS, USDOT
  • Created Date: Mar 30 1977 12:00AM