Approach to Analysis and Testing Technology of Dynamic Road Friction Coefficient

Through analyzing the testing methods of dynamic friction coefficient between road surface and tire,the rationale of testing road surface friction coefficient and structure characteristics of testers are described,and the effects of the traveling speed and road condition on the friction coefficient are investigated.Using the continuous dynamic friction coefficient testers to test the friction coefficients with different speed,the dynamic characteristics of friction coefficient between highway surface and tire are analyzed.For the expressway surface,taking the dynamic friction coefficient as an evaluation index can make the road evaluation indexes more reasonable.