![]() ![]() Pavement design can adjust surface pavement properties to provide the safety needed. ![]() The surface texture can affect the skid resistance, splash-and-spray, rolling resistance, and tire wear. The extent of skid resistance on any given pavement depends on the design of the surface texture, specifically its micro- and macro-texture. ![]() The direct force developed in the tire-pavement interface is known as skid resistance, a parameter defined by the properties of the tire, the vehicle speed, and the pavement condition and texture. Understanding the texture-friction relationship is valuable for transportation agencies, engineers, and contractors for proper pavement design and maintenance, especially when higher skid resistance is needed. Pavement surface texture is a major contributing factor to tire–pavement friction. Proper tire-pavement interaction is essential for the safety of motorists. This model deepens knowledge on tyre/road interaction.By: Hossein Roshani, Ph.D., P.E. Finally, experimental tyre/road noise and enveloped texture data obtained with the indenter algorithm have been used to elaborate a linear model that relates low and high frequency noise to texture one-third octave bands. Correlation patterns show that rolling noise can be separated in three main contributions: low, middle and high frequency noise. The first algorithm, proposed by Von Meier and based on the limitation of the second order derivative of the profile signal, shows poor correlation with high frequency noise, while the second algorithm, based on a novel method proposed by Sandberg and Goubert and called indenter method, enhances correlation with low frequency noise and preserves information at higher frequencies. Tyre deformation has also been addressed by analysing two already existing tyre envelopment algorithms. The present work studies the correlation between road texture and tyre/road noise from an experimental point of view, by analysing texture and noise spectra on ten different road surfaces. Several studies tried to find a correlation between road texture and broadband noise data, trying to provide guidelines for the development of acoustically optimised road surfaces. The main source of road traffic noise is tyre/road interaction thus, the use of low noise road surfaces represents an optimal solution for its mitigation. Road traffic noise is the most common source of environmental pollution in urban areas and therefore, the study of noise mitigation actions is fundamental for urban planning. ![]()
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March 2023
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