Abstract
From the perspective of ensuring road traffic safety for next-generation vehicles, it is important to create a database of actual road friction characteristics. We have proposed a new method that enables continuous measurement and have shown the measurement results for different road surfaces and measurement conditions. Based on these results, this paper shows that the advantage of this continuous measurement is that it can measure the characteristics of road surfaces with variable friction properties and obtain measurement results that depend on the measurement location. We also show the quantitative validation results of this device by correlating the measured results with the provided road friction characteristics in wet conditions. Next, we show the differences in the properties of road surfaces with different coefficients of friction due to different road surface conditions, such as dry and wet conditions, and show that the range of decrease in properties due to wetting varies greatly depending on the pavement condition and other factors.
