Three studies are described concerning discomfort glare arising from automotive headlamps. Two issues were of principle concern, the so-called "range effect", and the relationship between laboratory and field findings concerning glare. The first study was conducted in a laboratory and was designed to evaluate the range effect and subject age. A significant range effect was found. Older subjects were more sensitive to glare than young subjects, but the effects were small except at very high glare levels. The second study compared glare ratings using the 9-interval DeBoer scale and a simple 3-interval scale. Results are described. The third study compared ratings predicted based on laboratory data with those obtained in a full-scale vehicle meeting situation. The latter ratings were much more comfortable than predicted from laboratory data, except at very high intensities. A significant range effect was found as well.

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  • Corporate Authors:

    Illuminating Engineering Society

    120 Wall Street, 17th Floor
    New York, NY  United States  10005-4001
  • Authors:
    • Olson, P L
    • Sivak, M
  • Publication Date: 1984-4

Media Info

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Filing Info

  • Accession Number: 00396042
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Nov 30 1985 12:00AM