Abstract
Road marking system is a significant component of asphalt pavement, and it plays an irreplaceable role in improving traffic safety. The durability of road markings is critical to driving safety, especially for the autonomous vehicles in the future. It is also a major source of environmental contaminants in the road area. However, the currently used laboratory tests mainly focus on the measurement of the initial performance of road markings. This study developed an Accelerated Wearing Tester (AWT) to simulate the wearing process between tires and road markings. On the basis of the AWT results, durability and environmental risk of road markings was investigated. The results show that the skid resistance of road markings presents an obvious fluctuation with the wearing time. Environmental analysis indicates that the road marking promotes the emission of alkanes, benzenes, and halogenated alkanes, and can increase the content of lead and chromium in wearing products. Special attentions must be paid to the safety and environmental concerns of road marking materials. The method established in this study lays the foundation for the future improvement of driving safety and environmental friendship of road marking materials.
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