GLARE FROM LIGHTING INSTALLATIONS ALONG ROADS

BLAENDNING FRAAN BELYSNINGSANLAEGNINGAR VID SIDAN AV VAEGEN

There are no restrictions in the Scandinavian countries concerning the negative visual effects (e.g. glare) that lighting installations along roads (e.g. petrol stations and sports grounds) may have on drivers in night driving. The lack of recommendations causes problems both for authorities responsible for traffic safety and for owners of lighting installations. In this report a study of the problem area is described. First the fundamentals of disability glare are described. Methods for calculation and control of glare are given. A computer program and a simplified method for field measurements are described. The report contains some examples of lighting conditions and calculated glare levels from existing lighting installations on a number of petrol stations. Recommendations for the restriction of disability glare from lighting installations along roads are given. It is suggested that on unlit roads the equivalent veiling luminance from the lighting installations should not exceed 0,05 cd/sq M and on lighted roads the corresponding calculated level of glare should not exceed 0,12. Discomfort glare and the risk of visual misguidance are not dealt with. /TRRL/

  • Corporate Authors:

    Swedish National Road Administration

    Fack S-10220
    Stockholm 12,   Sweden 
  • Authors:
    • Fredriksen, E
    • Neilsen, B
    • Bjoerset, H H
    • Holmoey, R
    • Helmers, G
  • Publication Date: 1977

Language

  • Undetermined

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 79 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00183438
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Moerkertrafik Rpt N1Monograph
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM