“Slippery when dry?” Low dry friction and binder-rich road surfaces

Recent innovations in road construction have resulted in the increasing use of “negative textured” pavement surfacing materials. The bituminous coatings of these particular materials are commonly thicker and may possess properties necessary for long term durability but less than ideal for the rapid generation of the direct tyre/aggregate contact necessary for the delivery of optimum skidding resistance. Thus these negative textured road surfacings may produce surface friction characteristics that challenge the widely held belief that uncontaminated bituminous road surfaces cannot be “slippery when dry”. This paper does not attempt to describe the use of police test devices in the calculation of collision dynamics, this would be a paper in itself, nor does it attempt to describe in great detail the research already undertaken in this area by other European researchers, the reference section will satisfy those who wish a comprehensive understanding of the issues discussed here. This paper aims to inform the highway engineer of the past history of the low dry friction phenomenon and its recent association with the new generation of binder-rich negative textured road surfaces rapidly proliferating around the highways of he world.

Language

  • English

Media Info

  • Pagination: 20p
  • Monograph Title: Institute of Traffic Accident Investigators 7th International Conference 2005, Dunblane, Stirling, Scotland, 12th to 13th November 2005

Subject/Index Terms

Filing Info

  • Accession Number: 01388339
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 23 2012 12:47AM