ROAD SIGN ILLUMINATION - THE EFFECTS OF LUMINANCE LEVEL AND LUMINANCE DISTRIBUTION ON THE LEGIBILITY OF ROAD SIGNS

VAEGMAERKESBELYSNING; LUMINANSENS OCH LUMINANSJAEMNHETENS INVERKAN PAA LAESBA-HETEN HOS VAEGMAERKEN

The report contains a summary of known investigations concerning road sign illumination. It is concluded that the agreement between different luminance level results is good. but that empirical data concerning luminance distribution and legibility are completely lacking. A study was made to investigate the relation between luminance distribution and legibility. The results indicate that there is no correlation on suboptimal luminance levels, but that a significant correlation was found on the optimal luminance level./TRRL/

  • Corporate Authors:

    Swedish Road Safety Office

    Fack S-17120
    Solna 1,   Sweden 
  • Authors:
    • DAHLSTEDT, S
  • Publication Date: 1972

Language

  • Swedish

Media Info

  • Features: Figures; References;
  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00126341
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: NR 21 R&D Rept.
  • Files: ITRD, TRIS
  • Created Date: Apr 21 1976 12:00AM