Urban traffic in China is becoming increasingly complex, characterized by the dynamics of time, spatial changes and combinations, the composition and combination of traffic flows, the diversity of management measures, the interplay between fast and slow, dynamic and static elements, etc. Traditional transportation systems are struggling to adapt to these new conditions. This achievement represents a comprehensive improvement technology for traffic under complex circumstances, which has been developed through years of theoretical research and practical application in dozens of cities. The key components include: 1. Road Network Traffic Organization Optimization: This involves optimizing processes, traffic organization measures, special areas, and the traffic organization for major events. 2. Mixed Traffic Flow Optimization Design: This includes cross-section design, intersection design, section design, and the connection design of expressways. 3. Public Transportation Optimization Design: This encompasses the setting up of dedicated lanes, the design of dedicated roads, the prioritization of public transport at intersections, the layout and design of stops, as well as the capacity of stations and their routes. 4. Traffic Safety Design: This aspect focuses on the orderly flow of traffic, conflict mitigation, speed management, and other safety considerations. Slow traffic support, safety facilities, etc. 5. Traffic control design: Control strategies, single point signals and their coordinated control, bus priority control, slow traffic control. 6. Hub traffic optimization design: Urban external transportation hub design, rail transit hub design, conventional public transport hub design, connection design between public and non-public transportation modes. 7. Urban parking system design: Setting conditions for parking facilities, layout, spatial channeling patterns, vehicle entry and exit management, driver access routes. 8. Traffic language system design: Traffic language for motor vehicles, slow traffic, and public transportation systems.