ROAD SURFACINGS AND ACCIDENTS

International literature search indicates that 10 to 30 percent of total accidents occur in wet weather and up to 70 percent of these could be due to skidding. Other factors that could influence the wet weather accident data include traffic volume, rainfall intensity, possible reductions in pedestrians during wet weather. Skid resistance depends upon a number of factors including the type of road surface, aggregates used, physical site layout, preceding weather conditions, etc. Skidding is most likely to occur during overtaking, braking or accelerating. Fine scale microtexture (degree of polishing of a pavement surface) is the dominant factor in determining wet skid resistance at lower speeds. Both coarse macro texture (drainage capacity between the tyre and the pavement) and micro texture determine the wet skid resistance at high speeds. The phenomenon of wet weather skidding is detailed in the paper. The skid resistance of poor pavement surfacings can be improved by any one of three techniques depending upon their suitability: surface treatment without addition of materials; sprayed treatments; application of bituminous/concrete mixes. The advantages and constraints of each treatment are also presented in the paper. (a) For the record of the covering entry of this conference, please see IRRD abstract no 868510.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 295-307

Subject/Index Terms

Filing Info

  • Accession Number: 00729031
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • ISBN: 0-86856-989-5
  • Files: ITRD, ATRI
  • Created Date: Dec 12 1996 12:00AM