State of the Art on Friction and Texture Measurements.

This paper describes the state of the art on friction and texture. After an introduction (paragraph 1) paragraph 2 describes the importance of regular friction measurements. Paragraph 3 will describe existing problems related to the current practice, like the comparability of different devices and influences of temperature, road pollution and ageing of tyres. Then, in paragraph 4, a categorisation will be given of friction and texture measurement devices currently used around the world. Next new developments as the IFI, EFI, HERMES, the calibration of devices and other new developments are discussed. This paper will end with conclusions and recommendations. For the covering abstract see ITRD E135448.