The following friction data was taken from "Friction Applications in Accident Reconstruction" by Warner et al. (Society of Automotive Engineers document number: SAE 830612).
It has been provided without any warranty as to suitability, accuracy, or usefulness to the licensee. VS Visual Statement Inc. does not endorse this data in any form or its usage and provides it solely as a convenience to the Licensee. Commonly Used Friction/Drag Values are included for various road surfaces and conditions.Download Friction Tables (pdf)