Lateral and longitudinal grip variation

David Woodward, Phillip Millar, Campbell Waddell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Longitudinal measurement of wet skid resistance is used in many countries to manage the safety of its highway asset. The effect of aggregate type/size, asphalt type / age, degree of trafficking, climate, corners, braking etc. can all be seen in the measured data. However, longitudinal measurement does not show differences in grip across the lane being measured. This paper first considers typical longitudinal variation and then looks at the effect of lateral variation. Simple examples are given for each. The combination of longitudinal and lateral variation is considered in the context of racing circuits. Three case studies explore how GPS based grip data can be plotted using GIS software. The case studies show how the vehicle/tyre interacts with the asphalt surface trying to seek equilibrium conditions
Original languageEnglish
Title of host publicationUnknown Host Publication
PublisherWorld Road Association
Number of pages14
Publication statusPublished - Sep 2012
EventSURF 2012 7th Symposium on Pavement Surface Characteristics - Norfolk, Virginia, USA
Duration: 1 Sep 2012 → …

Conference

ConferenceSURF 2012 7th Symposium on Pavement Surface Characteristics
Period1/09/12 → …

Keywords

  • Race track
  • grip
  • GIS
  • mapping

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  • Cite this

    Woodward, D., Millar, P., & Waddell, C. (2012). Lateral and longitudinal grip variation. In Unknown Host Publication World Road Association.