This project is a research achievement in the field of transportation engineering. The existence of large numbers of pedestrians and non-motorized vehicles leads to abnormally complex spatiotemporal trajectories at urban road intersections in China, making it impossible for foreign research results to be directly applied in Chinese cities. Both domestic theoretical research and engineering practice lack detailed analysis of intersections, making it difficult to properly address traffic congestion and safety issues arising from China's urbanization process. This project relies on nine research topics including national and Shanghai Natural Science Foundation, National 863 Program, etc., combined with nearly ten years of theoretical research and engineering practice, proposing a refined analysis theory and technical system for urban road intersections. The main scientific and technological achievements include: (1) Intersection integrated planning and design theory. A holographic three-dimensional dynamic analysis model and software system for intersections have been developed, which is the first time in the world to extend the traditional two-dimensional analytical method of intersections to a three-dimensional one. It breaks through the limitations of current theories at home and abroad that saturation analysis only considers individual approaches or lane groups and then performs simple superimposition. It was the first to propose a saturation test model based on key conflict traffic flows internationally, pioneering new ideas for intersection analysis research and planning design. (2) The theory of humanized design for slow traffic at intersections. For the first time, it comprehensively uses empirical research, theoretical modeling, and virtual experiments to deeply analyze the mechanism of pedestrian jaywalking violations, clarifying the key parameters of pedestrian signal control, and compensating for the deficiencies in China's current technical standards. It has developed and calibrated a psychological-physical vehicle following model under mixed traffic conditions of motor vehicles and non-motor vehicles. For the first time, a refined modeling of the operation status of non-motorized vehicles in China has been achieved, laying the theoretical foundation for the analysis and research of slow traffic at intersections in our country. (3) Intersection differentiated multimodal traffic coordination control theory. Developed single point bus signal priority control methods suitable for the operational characteristics of public transport in China and a three-step multi-level trunk bus priority control strategy selection method based on green light demand; successfully developed real-time delay extraction technology at intersections based on video multitarget tracking for the first time internationally, breaking through the traditional method of indirectly calculating control indicators through models. The successful development of this technology will have a revolutionary impact on signal control. (4) Intersection full cycle traffic safety evaluation and management theory. Developed a unified and comparable conflict model between different modes of traffic suitable for the characteristics of traffic accidents in China, as well as an accident root cause analysis method. At the same time, the concept of 'Total Quality Management' from lean production science is introduced, establishing a full-cycle safety quality management theory for intersection planning, design, operation, and management, and developing corresponding decision support systems. (5) Simulation and experimental analysis techniques for complex traffic behaviors at intersections. A micro-traffic modeling and simulation theory suitable for the characteristics of China's mixed traffic flow is proposed, and an independent TESS (Tongji Traffic Network Simulation System) with complete intellectual property rights is developed; in response to the needs of complex traffic behavior at intersections and simulation optimization, refined simulation analysis technology, a virtual experiment platform for traffic behavior, and a hardware-in-the-loop simulation system are developed. Relying on the aforementioned achievements, our team is the main editor of 1 national standard, 2 provincial and ministerial standards, participates in editing 1 industry standard, writes and translates 4 monographs, applies for 16 patents. Authorized 4 items, software copyright 6 items, published more than 80 academic papers, including over 40 SCI/EI indexed papers. The project achievements have been promoted and applied in more than 10 cities such as Shanghai, Beijing, Hangzhou, etc., generating indirect economic benefits of up to or exceeding 600 million yuan in the past three years, and producing significant social benefits in reducing traffic accidents and fuel consumption emissions, guiding civilized traffic behavior, and talent cultivation. The project achievements have received high praise from international peers and have been appraised by the Ministry of Education as 'innovative, with overall international advanced level, among which the intersection saturation test method, delay automation detection technology, three-dimensional dynamic analysis model, etc., are at the international leading level, with broad application prospects.'