Methods for experimental investigations on tyre-road-grip at arbitrary roads

Having a look at safety to traffic and the prevention of accidents it can be observed that technical improvements in active safety of vehicles have led to various positive effects in this area. Among other components the tyre-road contact takes a key role in the development of active safety technologies. All forces in accelerating, breaking and vehicle guidance have to be transmitted through the tyre-road contact area by friction forces. A common way to characterize a friction process is to identify the coefficient of friction mu between two touching materials. Even though there are several approaches to experimentially characterise road surfaces, no standard method exists. In this paper an overview of existing test methods is given. Furthermore the preliminary design of a newly developed portable test device with its possibility to investigate the tyre-road friction of arbitrary roads or even places of accidents is shown. (A) Paper to the session "Methodology of In-Depth Investigations, Part I" of the 5th International Conference on ESAR "Expert Symposium on Accident Research", 7th to 8th September 2012 in Hannover.


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  • Accession Number: 01497302
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • ISBN: 978-3-95606-021-2
  • Files: ITRD
  • Created Date: Oct 9 2013 8:08AM