Tyres, road surfaces and reducing accidents: A review

  • Published: AA Foundation for Road Safety Research, 2004
  • Authors: J. Bullas
  • Date Added: 06 Mar 2013
  • Last Update: 06 Mar 2013
  • Format: pdf


To investigate whether any relationship exists between the surface characteristics of the road surface and the RTIs that occur, and, in particular, to investigate influencing factors such as wet/dry conditions, lighting and road markings.


The method used was to review the information available on the various aspects and to draw it together into three chapters on surfacings, tyres and RTI databases, carrying out additional research as appropriate to each area.

Key Findings:

  • Surfacing materials do not always deliver appropriate levels of both macro- and micro-texture throughout their service lives.

  • The Skidding Standard has provided a soundly-based structure for the effective allocation of resources to maintain the frictional properties of the Highway Network.

  • The new skid resistance indicator in the NRMCS provides a single benchmark statistic for the overall skid resistance condition of the highway road network. However, this single statistic does not reflect the distribution of skidding resistance deficiency, or its consequential effects on RTIs, across the network.

  • The mechanical treatment of a sound road surface to restore skidding resistance and texture depth can provide an effective short to medium-term solution to micro- and macro- texture deficiencies, which may need treatment more immediately than can be achieved by conventional resurfacing technique.

  • Spray suppression devices and negative-textured surfaces have improved the wet-road driving experience in the UK.


Surfacings, Texture, Skid resistance


Useful UK-based content investigating links between state of the road surface and RTIs.