Road Weather Management Program
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Best Practices for Road Weather Management Version 2.0

Title:

Inverse Estimation of Friction Coefficient of Winter Road Surface with Vehicular Motion Data Measured by GPS-Equipped Probe Vehicles

Abstract:

This study is concerned with a snow and ice control system based on a friction coefficient. A method was developed to estimate the friction coefficient on winter road surfaces indirectly from vehicular motion data. The interaction between tire and road surface was taken into account and integrated into a genetic algorithm. The friction coefficients estimated by the method were better fitted to the actual measured values, compared with those estimated by conventional physical formulas. More conveniently, the friction coefficients estimated were not sensitive to the parameters of the tire model that are difficult to measure in a real field.

Source(s):

6th International Symposium on Snow Removal and Ice Control Technology, Transportation Research Circular, No. E-C063

http://trb.org/publications/circulars/ec063.pdf

Date: 2004

Author:

Nakatsuji, Kawamura, Maeda

Keywords:


Ice/Frost
Winter maintenance
Pavement friction

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