Roe, P. G.
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Lecture
2008
17. EVU Conference, Nice
Roe, P. G.: Braking Force Transfer Capabilities of Tires on Wet Roads. 17th EVU Conference, Nice 2008
English, 12 pages, 4 figures, 4 references
In the mid 1990s, new road surfacing materials were introduced in the UK that provided advantages such as faster and safer construction techniques, improved ride and reduced tyre/road noise. In the years following the introduction of the new materials there was an increase in anecdotal comment related both to dry and wet skidding resistance in the first few months of service, reinforced by police comments on lower than usual dry friction found in routine stopping-distance skid tests on some relatively new surfacings. This led to concerns that there might be an increased risk of accidents occurring on new asphalt surfaces.
The potential effects have been commented on in several countries. In the UK, the Transport Research Laboratory (TRL) has carried out an ongoing programme of research into the effects of early life skid resistance, as it is known. This work has been sponsored primarily by the Highways Agency (HA) but with some support from CSS (formerly the County Surveyors Society) and the UK asphalt industry. It has three main aspects: investigation of the physical phenomena; assessing whether there is any evidence in accident statistics of increased accident risk while surfaces are relatively new; consideration of ways to reduce any risks identified.
This paper provides some background for delegates to this conference, summarises the work that has been carried out so far (the work is reported in detail elsewhere) before briefly describing some of the ongoing research.
Only members can see the details and the attached documents.