Low dry friction: measurement and imaging

A frictional phenomenon presently observable on some new negative textured road surfaces in dry conditions, challenges the commonly held view that the frictional properties of any given road surface in the dry are generally superior to those of the same surface in the wet. Evidence of reduced dry road friction, caused by the presence of a non-water layer located between the tyre and the road surface aggregate, was documented as early as in the 1940's, and the principles of determining dry road friction from simulated emergency braking, using braking tests, have been used in courts of law for over sixty years. Low dry friction on uncontaminated road surfaces has been measured in the United Kingdom (UK) on both traditional road surfacing and on more modern negative textured road surfaces, but in the latter case no evidence exists to link it to any fatal or near fatal crashes in the UK. A combination of empirical testing combined with the statistical analysis of police deceleration tests has added to the understanding of how low dry friction can be generated on negative textured surfaces - a phenomenon termed by some as 'bituplaning' due to its similarity to aquaplaning/hydroplaning - but no single mechanism responsible for this phenomenon has yet been identified.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9789612389666
• Authors:
  • Bullas, J C
  • Hounsell, N
• Conference:
  • Symposium on Pavement Surface Characteristics, 6th, 2008, Portoroz, Slovenia
• Publication Date: 2008

Language

• English

Media Info

• Pagination: 17p
• Monograph Title: 6th Symposium on Pavement Surface Characteristics, 20-23 October 2008, Potoroz, Slovenia: proceedings

Subject/Index Terms

• TRT Terms: Dry weather; Friction; Pavement performance; Roads; Surface course (Pavements); Wet weather
• Uncontrolled Terms: Pavement technology
• ATRI Terms: Dry road; Friction; Pavement performance; Road surface properties; Wet road
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 01383780
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 9789612389666
• Files: ATRI
• Created Date: Aug 22 2012 3:50PM