HALOGEN AND CONVENTIONAL CONTINENTAL EUROPEAN HEADLIGHTS- A COMPARISON OF VISIBILITY DISTANCES

USING VISIBILITY DISTANCE AS A CRITERIUM, HALOGEN AND CONVENTIONAL HIGH AND LOW BEAM HAVE BEEN EXPERIMENTALLY COMPARED IN A SERIES OF FIELD EXPERIMENTS. THE MAIN RESULTS WERE: (1) ON HIGH BEAM WITHOUT OPPOSING LIGHT, THE HALOGEN HEADLIGHTS OFFER ABOUT 25% LONGER VISIBILITY DISTANCES THAN THE CONVENTIONAL HEADLIGHTS; (2) WITH BOTH OPPOSING CARS USING LOW BEAM IT IS A SLIGHT ADVANTAGE TO HAVE HALOGEN HEADLIGHTS; AND (3) THE OPTIMAL DIPPING DISTANCE IS A FUNCTION OF HIGH BEAM SYSTEM (INTENSITY) RATHER THAN LOW BEAM SYSTEM. SMALL DIFFERENCES IN AIMING, ATMOSPHERE ETC. CAUSE LARGER DIFFERENCES IN VISIBILITY DISTANCES THAN DOES HEADLIGHT SYSTEM. /AUTHOR/

  • Supplemental Notes:
    • Report 94, 14 PP, 5 FIG, 9 REF
  • Corporate Authors:

    Uppsala University, Sweden

    Department of Psychology, Tradgardsgaten 20
    75220 Uppsala,   Sweden 
  • Authors:
    • RUMAR, K
  • Publication Date: 1970

Subject/Index Terms

Filing Info

  • Accession Number: 00221257
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 25 1971 12:00AM