The object of the work described in the report is to determine levels of resistance to skidding appropriate to the National Primary Routes. First, the relationship between resistance to skidding and the occurrence of wet road skidding accidents on rural sections of National Primary routes is examined. Secondly, the occurrence, distribution and association of the characteristics relevant to resistance to skidding of the surface encountered on these routes in five selected counties is presented and discussed in detail. In particular, the skidding resistance of the road surface, measured using SCRIM, is shown to be strongly dependent on the quality of stone used in its construction. In this regard, PSV (polished stone value) is found to be a useful predictor of the resistance to skidding of the surface. The degree of variability encountered within quarry underlines the need for frequent laboratory testing of roadstones. The adoption of two distinct safety oriented resurfacing programmes is recommended: a blanket preventive maintenance programme based on threshold values of skidding resistance and a remedial measures programme based on the identification and resurfacing of short road lengths where wet skidding accidents are found to cluster. Finally, interim threshold values of skidding resistance are recommended for National Primary routes.

  • Corporate Authors:

    An Foras Forbartha

    St Martin's House, Waterloo Road
    Dublin 4,   Ireland 
  • Authors:
    • CROWLEY, F
  • Publication Date: 1976-9

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 33 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00148678
  • Record Type: Publication
  • Report/Paper Numbers: Report No. RS 195
  • Files: TRIS
  • Created Date: Mar 15 1977 12:00AM