GLARE AND MOUNTING HEIGHT OF HIGH BEAMS USED AS DAYTIME RUNNING LAMPS

This analytical study examined the effects of mounting height on discomfort glare from reduced-power high-beam daytime running lamps. Of interest were the effects for mounting heights between 0.864 m (34 in) and 1.372 m (54 in) - the range in which full-power low beams are currently allowed, but reduced-beams are not. Three analyses were performed. The first analysis involved estimating the illuminance reaching a preceding driver via rearview mirrors. The second analysis compared glare illuminance from reduced-power high beams to that from full-power low beams. The third analysis evaluated the expected changes in discomfort-glare ratings from reduced-power high beams as a function of increased mounting height. The analyses were based on photometric information from 5 high beams and 43 low beams, and they were performed for 5 following distances and 3 lateral offsets of the vehicles.

  • Corporate Authors:

    University of Michigan Transportation Research Institute

    2901 Baxter Road
    Ann Arbor, MI  United States  48109-2150
  • Authors:
    • Sivak, M
    • Flannagan, M J
    • Aoki, M
  • Publication Date: 1995-11

Language

  • English

Media Info

  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00723616
  • Record Type: Publication
  • Report/Paper Numbers: UMTRI-95-40
  • Files: TRIS
  • Created Date: Jul 1 1996 12:00AM