PHOTO-INTERPRETATION OF PAVEMENT SKID RESISTANCE IN PRACTICE

The need for a surface texture classification system stems from the fact that the highway engineer must manipulate the surface texture in order to control the pavement's skid resistance. Following the author's earlier work a standard texture classification procedure has been formulated which views the pavement surface as a geometric structure expressed by six parameters; height, width, angularity, distribution, harshness of projections above the matrix and harshness of the matrix itself. The function of the classification method is primarily to identify pavement surfaces and to correlate textures with the accumulated test results and experience of skid testing devices. A simple stereo-photographic technique is used. Regression analyses of photo-interpreted skid numbers and skid trailer test results indicate that the coefficient of correlation ranges from 0.8 to 0.9. Examples are reported of the method's applications for examining the reason for or the cause of pavement slipperiness, for obtaining skid resistance information in locations where skid test vehicles cannot operate, for investigating the skid resistance of laboratory samples of pavement textures, to ease the work load of skid trailers engaged in skid resistance surveillance and for determining the need for correcting deficient pavement skid resistance.

• Corporate Authors:

  Ontario Ministry of Transportation & Communic, Can

  Research and Development Division, 1201 Wilson Avenue
  Downsview, ONo M3M 1J8,   Canada 
• Authors:
  • Schonfeld, R
• Publication Date: 1974

Subject/Index Terms

• TRT Terms: Classification; Pavements; Photointerpretation; Regression analysis; Skid resistance; Skid trailers; Skidding; Slipperiness; Surface course (Pavements); Texture
• Uncontrolled Terms: Skid number
• Subject Areas: Data and Information Technology; Design; Highways; Pavements;

Filing Info

• Accession Number: 00125466
• Record Type: Publication
• Report/Paper Numbers: RR188
• Files: TRIS
• Created Date: Dec 3 1975 12:00AM