DRIVER EYE LEVEL AND ROAD SAFETY

THE HEIGHT OF THE DRIVERS EYES ABOVE THE ROAD SURFACE AND THE MEANS BY WHICH SUCH MEASUREMENTS ARE TAKEN INTO ACCOUNT IN GEOMETRIC DESIGN STANDARDS ARE DISCUSSED. THE USE OF EYE HEIGHT IN HIGHWAY CALCULATIONS, THE CURRENT DESIGN VALUES FOR EYE AND OBJECT HEIGHT AND THE FACTORS AFFECTING EYE HEIGHT ARE GIVEN. REDUCED HEIGHT HAMPERS VISIBILITY ESPECIALLY AT VERTICAL CURVES AND STREET OBSTRUCTIONS. THIS SITUATION CREATES DANGERS ON SOME EXISTING ROADS DESIGNED FOR AN OUT OF DATE EYE HEIGHT WHICH SHOULD BE REDUCED FROM 3 FT. 9 IN. TO 3 FT. 3 IN. CREST VERTICAL CURVES AND OBSTRUCTIONS SHOULD BE STUDIED TO DETERMINE WHETHER RECONSTRUCTION IS NECESSARY.

  • Availability:
  • Supplemental Notes:
    • Vol 14, No 3, PP 26-35, 11 FIG, 4 TAB, 15 REF
  • Authors:
    • Newland, R M
  • Publication Date: 1966

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Filing Info

  • Accession Number: 00203201
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Feb 2 1994 12:00AM