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LIGHT REFLECTION BY ROAD SURFACES

This report deals with the relationship between the light reflecting properties and the composition of road surfaces. For this it is essential to be able to characterize, identify and classify surfaces with regard to their reflection properties. The Working Group's research has revealed that this is perfectly feasible. Identification is possible by means of two parameters based on three luminance coefficients. One parameter (two luminance coefficients) is sufficient for classification. The SCW-KEMA classification system introduced by the Working Group consists of two classes with the aid of which dry road surfaces can be dealt with, with sufficient accuracy for practical purposes. From a photometric point of view it is possible to define preferred road surfaces. It appears that asphalt concrete road surfaces in which at least about 30% (by mass) of the mineral aggregate consists of white chippings and cement concrete roads usually show preferred reflection properties. This is also the case with surface dressings with white chippings. This applies both to public road lighting (high average road surface luminance combined with good uniformity) and to lighting by the lamps of motor vehicles.

  • Supplemental Notes:
    • This is the English edition of Communication 53 of the Study Centre for Road Construction in The Netherlands. It is the result of the activities of Working Group E2 "Road Lighting and Surface Texture".
  • Corporate Authors:

    Stichting Studie Centrum Wegnebouw

    Jansbuitensingel 14A
    Arnhem,   Netherlands 
  • Publication Date: 1984

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 61 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00463027
  • Record Type: Publication
  • Report/Paper Numbers: Mededeling 53
  • Files: TRIS
  • Created Date: Mar 31 1987 12:00AM