# A Review of Long-Term Skid Resistance of Asphalt Pavement
###### Abstract  
This study aims to gain an in-depth understanding of the research trends in the field of the long-term skid resistance (L-TSR) of asphalt pavement (AP). In this paper, the detection method, decay model, influence factors, and prediction model of the L-TSR of AP are summarized. This paper quantitatively analyzes the skid resistance mechanism of the pavement and elucidates the existing problems and future development directions of the L-TSR of AP. The research indicates that digital image methods and intelligent sensor detection methods are important methods for the skid resistance detection of AP in the future. The indoor test can provide detailed data of material properties and can effectively evaluate the performance of anti-sliding materials under different environmental conditions by simulating the actual road conditions. A quantitative analysis of the skid mechanism of AP can better reflect the actual contact characteristics of the pavement. The combined prediction model combining multiple single models can not only correct the shortcomings of a single model but also greatly improve the calculation accuracy. At present, the research on the L-TSR of AP is insufficient in the aspects of the tire-pavement interaction mechanism, evaluation index, decay model, and combined prediction model, which needs to be further studied from quantitative, time-varying, unified, and innovative aspects. asphalt pavement; skid resistance; influence factors; evaluation index; prediction models 2025  
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In the skid-resistant design of AP, firstly, the characteristics of tire-pavement interaction should be analyzed based on the skid mechanism of AP [16]. Secondly, the influencing factors of AP skid resistance are explored, high-quality raw materials are selected, and the best material composition parameters are determined [17]; in addition, the indoor accelerated loading equipment is used to analyze the change in the skid resistance of AP, and then the decay law of the L-TSR of AP is explored [18]. Finally, the prediction model of the skid resistance of AP suitable for local climatic conditions, pavement conditions, environmental factors, and complex traffic loads is established [19] so that the road section with insufficient skid resistance can be repaired in time and that the AP has good skid resistance during service. Therefore, the research on the L-TSR of AP mainly encompasses AP skid resistance testing methodologies, the mechanism and influencing factors of AP skid resistance, and the decay law and prediction model of the L-TSR of AP, among others [20; 21]. Nevertheless, the current research on the L-TSR of AP has yet to be systematized and still exhibits certain deficiencies. For instance, there is a shortage of high-precision data acquisition equipment; reliable and comprehensive indoor acceleration loading devices capable of simulating real road conditions are lacking, and the evaluation systems of different equipment remain ununified. The optimal material composition parameters for different types of AP have not been precisely defined; research on the decay law of the L-TSR of AP under the coupling effects of various factors is insufficient. These issues severely impede the improvement of the skid resistance performance of AP, necessitating further in-depth analysis and research. This paper deeply analyzes various factors affecting the L-TSR of AP, clarifies the contributions and influential laws of each factor in the evolution process of L-TSR, and provides a theoretical basis for further optimizing the design and construction of AP. At the same time, it objectively points out the problems and deficiencies in the current research on the L-TSR of AP, such as the limitations of detection methods, the imperfection of equipment, and the lack of theoretical models. This helps researchers clarify the key points and breakthrough directions of future research and avoid repeated research and the waste of resources.