About one third of all road accidents and more than half of all fatal road accidents occur at night, largely because of limited visibility. Two remedies exist; to provide street lighting, which is limited to urban areas because of high cost, and to equip roads with retro-reflective markers. There are two types of retro-reflectors: corner cube reflectors and Cat's Eyes. Both types have been used on guard posts and guard rails for many years. Their use on roads is a more recent development. Raised reflective pavement markers are superior to paint stripes because, unlike paint lines they maintain their reflectivity even in rain; they exercise a warning effect on vehicle drivers, as they are heard and felt when crossed. According to an OECD Report (Paris 1975) their application on a six-lane freeway in the United States reduced the total number of accidents by 20 percent and personal-injury accidents by 61 percent. Glass reflectors are superior to acrylic plastic reflectors, which lose 80 percent of their reflectivity after a comparatively short period.

  • Supplemental Notes:
    • Presented at the Fourth IRF African Highway Conference, Nairobi, Kenya, January 20-25, 1980. For individual papers see TRIS Accession Numbers 311921 through 311971.
  • Corporate Authors:

    International Road Federation

    525 School Street, SW
    Washington, DC  United States  20024
  • Authors:
    • Feldhutter, R
  • Publication Date: 1980

Media Info

  • Features: Figures; Photos;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00311962
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper, HS-028 990
  • Files: HSL, TRIS
  • Created Date: Jun 9 1985 12:00AM