Abstract
Pavement skid resistance is an important guarantee for driving safety. However, it is very difficult to determine the exact friction in a field environment. In order to overcome the limitations of traditional evaluation methods, the effect mechanism of surface 3D (three-dimensional) texture on skid resistance was firstly analyzed. Then the surface 3D texture of pavement was acquired through an improved binocular reconstruction method. Additionally, the relationship between friction coefficient and 3D texture was also analyzed. Subsequently, under the concept of IFI (international friction index) used to harmonize different detection methods of skid resistance, the evaluation model of skid resistance based 3D texture was further established. The results showed that the multiple quadratic multinomial regression model can well describe the relationship between skid resistance and texture indicators. The establishment of an improved evaluation model is simple to operate and implement. It can directly evaluate the skid resistance on pavement surface once the aggregates’ type and 3D texture are known. This evaluation model not only overcomes the challenges of friction coefficient with a strong conditional restriction, but also provides a harmonious approach for different detection methods in the evaluation of pavement skid resistance.
Highlights
Due to poor coordination between people and the vehicles on the roads, traffic safety problem has become one of the serious menaces
This evaluation model overcomes the challenges of friction coefficient with a strong conditional restriction, and provides a harmonious approach for different detection methods in the evaluation of pavement skid resistance
The model Analysis Based on 3D Texture Data
Summary
Due to poor coordination between people and the vehicles on the roads, traffic safety problem has become one of the serious menaces. In 2016, 0.165 million traffic accidents, 51,800 traffic fatalities and 800 million traffic-related direct economic losses throughout China were reported by National bureau of statistics [1]. NHTSA (National Highway Traffic Safety Administration) declared that about. There are many factors influencing traffic accidents, but the skid resistance on pavements is really a key factor. Researches show that the crash rate increases rapidly with decreasing BPN (British Pendulum Number) below 50 and an improvement of 10% on the average level of skid resistance could result in a 13% reduction in the wet-skid accident rate [3,4]. Satisfactory skid resistance plays an important role in reducing traffic accident rates
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