ROAD SURFACE TEXTURE AND THE SLIPPERINESS OF WET ROADS

THE TEXTURE REQUIRED OF A ROAD SURFACE, SO THAT IT SHALL BE AS RESISTANT TO SKIDDING AS POSSIBLE, IS HARSH FOR LOW SPEEDS AND HARSH AND LARGE-SCALE FOR HIGH SPEEDS. THE FUNCTION OF THE TEXTURE IS TO ASSIST DRAINAGE OF THE WATER TO ACHIEVE DRY CONTACT AS QUICKLY AS POSSIBLE AND MAXIMUM DEFORMATION OF THE TIRE TREAD SURFACE BY THE ASPERITIES OF THE ROAD SURFACE. THIS IS ACHIEVED BY EASY (LARGE) FLOW CHANNELS AND BY SHARP (HARSH) ASPERITIES GENERATING HIGH PRESSURE. THESE CONCLUSIONS ARE ILLUSTRATED IN AN EXAMINATION OF HOW THE SKIDDING RESISTANCE OF ACTUAL SURFACES VARIES WITH SPEED, AND HOW RUBBER HYSTERESIS INCREASES FRICTION. AQUAPLANING IS ALSO CONSIDERED. HOW SUITABLE TEXTURES ARE BEING OBTAINED IN THE UNITED KINGDOM AND THE RESEARCHERS RELEVANT TO THIS SUBJECT BEING PLANNED OR IN PROGRESS AT THE ROAD RESEARCH LABORATORY ARE DISCUSSED. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1968/214/214-004.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Surface-Vehicle Interaction, and presented at the 46th and 47th Annual Meeting of the Highway Research Board. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • HARRIS, A J
• Publication Date: 1968

Media Info

• Features: Figures;
• Pagination: pp 18-23
• Monograph Title: Surface properties of pavements and vehicle interaction
• Serial:
  • Highway Research Record
  • Issue Number: 214
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Friction; Hydroplaning; Hysteresis; Moisture content; Pavements; Rubber; Skid resistance; Slipperiness; Speed; Surface course (Pavements); Surface drainage; Texture
• Uncontrolled Terms: Wet conditions
• Old TRIS Terms: Highway drainage
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206745
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jul 22 1994 12:00AM