In a large field study red, orange, light blue and dark blue rotating and flashing beacons have been studied mainly from a peripheral conspicuity point of view. Some subjective evaluation has also been made. The results show that from a purely visual point of view the orange beacon is superior. The red beacon is inferior in nighttime conditions but good under bright daylight conditions which seem to be the worst from a safety point of view. The blue beacons are almost too good in nighttime conditions in the respect that they cause discomfort but they are poorly visible in bright daylight conditions. A light blue beacon improves visibility in daylight. Flashing light blue beacons are equally as conspicuous as rotating light blue beacons but cause more discomfort. /TRRL/

  • Corporate Authors:

    Uppsala University, Sweden

    Department of Psychology, Tradgardsgaten 20
    75220 Uppsala,   Sweden 
  • Authors:
    • Rumar, K
  • Publication Date: 1974

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 44 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00096775
  • Record Type: Publication
  • Source Agency: Swedish National Road and Traffic Research Institute
  • Report/Paper Numbers: Report 152 R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: Jul 15 1976 12:00AM