This paper presents the results of a test program on the skid performance of tires. The program was conducted under Contract DOT-HS-205-2-238 from the Department of Transportation, National Highway Traffic Safety Administration. Effects of the following variables were evaluated: tire load; tire inflation pressure, road speed and surface water depth. An ASTM type control tire and a production bias belted tire were used in the tests. Both peak and locked wheel coefficients of friction were measured using two skid trailers. All tests were run on a wet surface with either the skid trailer's onboard watering system spreading 0.51 mm (0.02 in.) of water on the test track or sprinklers flooding the track surface to a depth of 3.05 mm (0.12 in). Load, speed, and inflation were varied over a range of three values. Two surfaces were used, SN 35 plus or minus 5 concrete and SN 60 plus or Minus 5 asphalt. Of the variables tested, load and inflation had the least effect on traction over the range which they were varied. Speed and water depth interacted, causing a significant decrease in skid coefficients with an increase in both parameters. /Author/

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 126-135
  • Monograph Title: Skidding Accidents: Tires, Vehicles and Vehicle components. Proceedings of a Conference Conducted by the Transportation Research Board, May 2-6, 1977
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00163919
  • Record Type: Publication
  • ISBN: 0309025745
  • Report/Paper Numbers: Proceeding, HS-021 374, HS-020 126
  • Files: TRIS, TRB
  • Created Date: Oct 13 1977 12:00AM