Project Background
Urban traffic governance involves multiple departments, including traffic management, urban planning and emergency command. Data sources span signal controllers, video feeds, variable message signs, map service providers, meteorological services and many other channels, making information silos a prominent problem. Traditional command centers rely on staff manually watching screens, resulting in delayed information integration and low decision-making efficiency.
Built on a City Information Model (CIM), this project establishes a real-time digital twin cockpit to achieve "one map for full situational awareness, one click for coordinated dispatch."
Core Functions
Traffic Situation Awareness
- Real-time traffic heat map (based on dual data sources: floating-car GPS + video AI)
- Real-time calculation of segment travel speed, saturation and congestion index
- Traffic volume statistics and prediction at key intersections
- Traffic impact prediction for major events and severe weather
Simulation and Deduction
- Road network capacity simulation (microscopic traffic simulation model)
- Comparison of traffic organization schemes (signal timing optimization, lane control scheme evaluation)
- Optimal route planning and guidance for emergency vehicles
Multi-Department Data Fusion
- Access to real-time data from traffic management, urban administration, meteorology, water resources and other departments
- Cross-department event linkage (e.g., waterlogging alerts linked with traffic control)
Command and Dispatch
- Automatic accident location and impact area assessment
- One-click activation of the emergency plan library (congestion dispersion, severe weather control)
- Unified publishing through variable message signs and radio broadcasts
Technical Highlights
- CIM foundation: 3D urban scenes supporting centimeter-level accuracy
- Real-time data streams: Kafka + Flink stream processing pipeline with end-to-end latency under 5 seconds
- Visualization engine: WebGL-based, smoothly supporting rendering of millions of dynamic objects
- Data governance: unified data standards and cross-department data quality monitoring
Deployment Architecture
Deployed in the cloud, supporting multi-level coordination across province / city / district, with data shared hierarchically according to access permissions.