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,   United States 

  National Highway Traffic Safety Administration

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

Media Info

• Pagination: 102 p.

Subject/Index Terms

• TRT Terms: Drivers; Eye movements; Field tests; Glare; Headlamps; Highway design; Measures of effectiveness; Night vision; Reflectivity; Scanners; Tracking systems; Traffic safety; Two lane highways; Visibility; Vision
• Uncontrolled Terms: Effectiveness
• Old TRIS Terms: Driver vision; Scanning; Target detection
• Subject Areas: Highways; Safety and Human Factors;

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