Roadway tractive capabilities are an important factor in accident reconstruction. In the absence of full-scale experiments, tire/road coefficient of friction values are sometimes quoted from reference textbooks. For the various types of road construction, the values are given only in the form of a wide range. One common roadway type is oil-and-chip construction. We examine stopping distances for newly-rocked oil-and-chip roads vs. similarly constructed roads that have been traffic-polished. The examination was conducted through full-scale braking experiments with instrumented vehicles. Results show that the differences between newly-rocked oil-and-chip roads when compared to roads that are traffic-polished are on the same order as vehicle, tire and ABS algorithm differences, and that full-scale testing is required for accurate μ-values.
Friction on Polished vs. Newly Re-Rocked Oil-and-Chip Roadway Surfaces
Sae International Journal of Passenger Cars. Mechanical Systems
Sae Int. J. Passeng. Cars - Mech. Syst
SAE 2016 World Congress and Exhibition ; 2016
Sae International Journal of Passenger Cars - Mechanical Systems ; 9 , 2 ; 541-545
05.04.2016
5 pages
Aufsatz (Konferenz)
Englisch
Friction on Polished vs. Newly Re-Rocked Oil-and-Chip Roadway Surfaces
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