Pavement

This report presents an extensive literature review of pavement surface texture measurement methods with a specific interest in how they affect operator safety and delays to traffic. The literature review shows that there are a number of methods in use, such as the volumetric technique, image analysis technique and the laser profile techniques. Among the various methods, the vehicle mounted laser profile technique was the only method which effectively resolves the operator safety and traffic delay issues. However, adopting the vehicle laser profiler would also be impractical at present due to other issues, such as the high cost. The report also looked into the feasibility of network survey data for use in seal design purposes and found that the texture data collected from routine network surveys can be used for a preliminary desk-top estimation, prior to a detailed seal design.