THE EFFECT OF LIGHT ABSORBING MEDIAN ON DRIVER VISUAL PERFORMANCE

Analytical and experimental determinations were made of the effects of windshields and filters on probability of detecting objects and on seeing distances after dark. The analytical study showed that visual degradation increases more rapidly for filter transmittances less than 79%. The experimental study showed that seeing distances through clear windshields are greater than those through tinted windshields; the difference is less than 15 feet. The seeing distances attained by individual observers ranged from 200 to 600 feet. Eye damage can be sustained through all types of automobile glass studied. In particular, the shaded bands at the tops of windshields may increase the problability that a driver will sustain a retinal burn. Recommendations for automobile glass transmittances were made from the results of the analyses.

  • Supplemental Notes:
    • Abstract was published in Highway Safety Literature, HSL-73-12, p 4, 19 June 1973.
  • Corporate Authors:

    Brown Engineering Company, Incorporated

    Huntsville, AL  United States 
  • Authors:
    • Dunn, A R
  • Publication Date: 1973-6-19

Subject/Index Terms

Filing Info

  • Accession Number: 00081489
  • Record Type: Publication
  • Source Agency: Highway Safety Literature
  • Report/Paper Numbers: Final Rpt.
  • Contract Numbers: DOT-HS-089-2-453
  • Files: TRIS
  • Created Date: Mar 6 1975 12:00AM