The Traffic Accident Reconstruction Origin -ARnews-

Re: Need help on wet road fiction coefficient

Brendan Flaxman ([email protected])
Thu, 24 Sep 1998 18:19:44 -0400 (EDT)

Why not test the road yourself. I have done this with help from the fire department. The road surface was hosed down and skid tests (chalk gun fitted) where carried out. There are numbers of variants involved with wet road surfaces. The best option is to test your location for yourself attempting to reconstruct similar conditions to the those prevailing at the time of the crash.
If clearly defined skid marks where left at the scene at the time of the crash it is likely that a coefficient of friction close to a dry road surface prevailed. A road surface has to be more than just damp before the coefficient of friction is dramatically reduced. It might be safer to compare dry with very obviously wet and produce a range of speeds from dry to wet.

Brendan Flaxman
[email protected]

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