STP763: Surface Texture Classification: A Guide to Pavement Skid Resistance

    Holt, FB
    Research technical officer and skid management officer, Ministry of Transportation and Communications, Downsview, Ontario

    Musgrove, GR
    Research technical officer and skid management officer, Ministry of Transportation and Communications, Downsview, Ontario

    Pages: 14    Published: Jan 1982


    Abstract

    The ability of a driver to stop on a wet pavement surface has been shown as a relationship between a tire and the pavement surface texture. For a number of years, the Ontario Ministry of Transportation and Communications has been classifying pavement surface textures and correlating these textures with the skid number of the surface, as measured by a brake-force trailer. The skid trailer number can be explained now in terms of the pavement surface texture. This paper contains a summary of the test procedure, a discussion of the texture classification system, and the relationship of the six texture parameters is discussed in terms of the equation used to generate a skid number at 100 km/h (62 mph). The advantages of using this system as a complement to present skid testing procedures are outlined, with particular attention to its use in those areas which cannot be tested by the brake-force trailer and in the area of mix design studies. The paper concludes with a discussion of some potential uses for the test method in future research work in Ontario, including the semiautomation of the interpretation procedure.

    Keywords:

    pavement skid resistance, skid number, surface texture, surface profile, texture parameters, photo-interpretation (semiautomated), skid trailer correlation, computer graphics, skid numbers (SN), instrumentation, stereo photography, pavement surface characteristics


    Paper ID: STP28461S

    Committee/Subcommittee: E17.23

    DOI: 10.1520/STP28461S


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