EXPERIMENTAL MULTIFACTOR RESEARCH ON FACTORS INFLUENCING THE AVAILABLE FRICTION FORCES BETWEEN TYRES AND WET ROAD SURFACES. SECOND PHASE: FUNCTIONAL REQUIREMENTS OF ROAD SURFACES

EXPERIMENTEEL MULTIFACTOR ONDERZOEK NAAR FACTOREN DIE DE BESCHIKBARE WRIJVINGSKRACHTEN TUSSEN BANDEN EN NATTE WEGDEKKEN BEINVLOEDEN. TWEEDE FASE: FUNCTIOELE EISEN AAN WEGDEKKEN

An experimental multifactor research is set up to monitor the friction forces between the road pavement and the tyre. In the second phase emphasis is laid on the characteristics of road surfaces. The research is undertaken on specially constructed road surfaces with a great variety in the macro roughness and in the micro roughness. On these road surfaces measurements are made for four types of tyres, two tyre treads and three speeds. Results show the possibility of describing the coefficients of friction in a mathematical relation dependent on the surface characteristics macro roughness and micro roughness as well as the speed. This relation shows that the micro roughness has an important influence on all coefficients of friction for all circumstances. The macro roughness is only important for higher speeds. For the first and third phase of the research see IRRD abstracts nos 244581 & 244583. (TRRL)

• Corporate Authors:

  Institute for Road Safety Research, SWOV

  Bezuidenhoutseweg 62
  The Hague,   Netherlands  2594 AW
• Publication Date: 1978

Language

• Dutch

Media Info

• Features: Figures; References; Tables;
• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Coefficient of friction; Coke; Force; Friction; Mathematical models; Measurement; Pavements; Properties of materials; Rolling contact; Smoothness; Speed; Surface course (Pavements); Surfacing; Texture; Tire treads; Tires; Wet weather
• Uncontrolled Terms: Wet pavements
• Old TRIS Terms: Transpiration
• ITRD Terms: 5460: Coefficient of friction; 5440: Contact (tyre road); 3071: Evenness; 6473: Mathematical model; 6136: Measurement; 5925: Properties; 5408: Speed; 3053: Surface texture; 2972: Surfacing; 1381: Tyre; 1392: Tyre tread; 3015: Wet road
• Subject Areas: Highways; Materials; Pavements; Vehicles and Equipment; I23: Properties of Road Surfaces; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00309777
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Report/Paper Numbers: R-78-34 Monograph
• Files: ITRD, TRIS
• Created Date: Aug 5 1980 12:00AM