Abstract:Measurement of urban roads is important for urban planning, traffic management and infrastructure construction. With the rapid development of refined 3D modeling technology, its application in the integrated measurement of urban roads is becoming more and more widespread. The aim of this study is to explore the application of refined 3D models in integrated measurement of urban road. And its accuracy and effectiveness are verified through the field data collection and analysis. Combined with the urban road project in Xian, the working technical route of urban road refinement 3D model is elaborated in detail, and the accuracy of the obtained result data is verified. The results of the study show that the method can meet the accuracy requirements of urban road integration measurement projects. Compared with the traditional measurement methods, the refined 3D model can provide high-precision geometry information of road, which provides the reliable data support for urban road planning and management.