Our Smart Roadway Lighting Solution uses millimeter-wave radar sensing to realize on-demand intelligent dimming and control for streetlights. The system automatically brightens lights when vehicles or pedestrians approach and dims them after they pass, significantly cutting unnecessary energy consumption while ensuring traffic safety. Supported by a device-edge-cloud architecture, it enables remote monitoring, fault alerts, and unified management, extending lamp lifespan and greatly reducing maintenance workload. In addition, the radar can collect real-time traffic data such as flow, speed, and direction, turning streetlights into smart perception nodes that support smart traffic applications. This solution delivers stable energy savings of 60%–75% and creates dual value for both lighting and urban traffic intelligence.
The Dilemma of Urban Roadway Lighting: Lights On, Roads Empty
Late at night, streetlights still shine at full power—illuminating empty roads while consuming precious energy. Roadway lighting management faces this contradiction every day:
Severe energy waste
Lights run at full power even when no vehicles or pedestrians are present, leading to high electricity costs.
Shortened equipment lifespan
Continuous full-load operation causes frequent lamp failures and high maintenance costs.
Difficult smart traffic integration
Traditional streetlights lack the ability to perceive traffic conditions, making it hard to integrate into smart city systems.
The core issue is simple: streetlights shine “blindly,” not “on demand.”
Our Solution: Radar Sensing + On-Demand Lighting
“Brighten when vehicles approach, dim when they leave—every kilowatt-hour used where it matters.”
Millimeter-wave radar sensors detect the presence and movement of vehicles, pedestrians, and non-motorized road users in real time, intelligently controlling streetlight brightness. When a target approaches, lights ahead are brightened in advance; when the target moves away, lights are dimmed or turned off, achieving precise on-demand lighting.
Compared to traditional solutions, our approach delivers three fundamental shifts:
Solution Architecture: Device–Edge–Cloud Collaboration
We adopt a Device–Edge–Cloud three-layer architecture to enable lightweight deployment and intelligent management of roadway lighting.
Device: Sensing & Execution
Millimeter-wave radar sensors are installed on streetlight poles, detecting the presence, distance, speed, direction of movement, and lane position of vehicles, pedestrians, and non-motorized users. Detection range exceeds 100 meters, with simultaneous tracking of over 10 targets and precise identification of approaching or departing direction.
Light controllers receive radar sensing signals and execute dynamic dimming commands—brightening lights in advance when targets approach, and dimming or turning them off after targets depart.
Edge: Coordination & Fault Tolerance
Multi-radar coverage backup: A single radar can cover multiple streetlight poles, with overlapping coverage between adjacent radars. If one radar fails, adjacent radars automatically compensate to ensure uninterrupted lighting.
Light control logic fault tolerance: Built-in fault tolerance mechanisms ensure stable operation even if partial sensing signals are abnormal, preventing scenarios where lights fail to turn on or remain on indefinitely.
Cloud: Management & Expansion
The cloud service platform provides device status monitoring, energy consumption analysis, remote upgrades, and alert management. Heartbeat monitoring enables early warning of anomalies, shifting maintenance from reactive response to proactive prevention.
Additionally, radar sensing data can be simultaneously output to smart traffic platforms, providing foundational data for traffic volume statistics, speed monitoring, and direction detection—delivering “one streetlight, dual value.”
Core Capabilities
All-Weather Operation:
Unaffected by rain, fog, snow, or haze; performs consistently day and night, ensuring reliable detection.
Long-Range Detection:
Detection range over 100 meters; a single radar can cover multiple poles, significantly reducing equipment investment.
Precise Direction Recognition:
Accurately determines whether a target is approaching or departing, enabling: “brighten on approach, dim on departure” to avoid wasted illumination.
Low Power Consumption & Long Lifespan:
CMOS-based design with low power draw and extended lifespan, suitable for long-term outdoor operation.
Advanced Interference Filtering:
Spatial filtering, multi-channel fusion, and adaptive interference suppression effectively filter out environmental interference from trees, buildings, etc., reducing false detections.
Overlapping Coverage Backup:
Multiple radars with overlapping coverage ensure lighting continuity even if a single radar fails.
Remote Maintenance:
Heartbeat monitoring, anomaly alerts, and remote upgrades significantly reduce maintenance costs.
Smart Traffic Expansion:
Simultaneously outputs traffic volume, speed, direction, lane data, and more, providing a perception foundation for smart traffic systems—“one streetlight, dual value”.
Customer Value
Energy Savings
Extended Lamp Lifespan
With lamps no longer operating continuously at full load, workload is reduced by over 75%, significantly lowering failure rates and extending maintenance cycles.
Reduced Maintenance Costs
Smart Traffic Expansion & Complement
Example of Return on Investment:
“Using 10,000 streetlights as an example, annual savings exceed 2 million USD typically.”
Application Scenarios
Dynamic dimming based on traffic direction; lights brighten in advance for approaching vehicles and dim after departure, ensuring efficient and safe nighttime travel
Low and variable traffic density; on-demand lighting delivers significant energy savings while ensuring nighttime safety for pedestrians and cyclists
Nighttime-heavy, concentrated vehicle traffic; intelligent lighting based on vehicle patterns avoids full-power operation around the clock
Dynamic brightness adjustment based on traffic density to avoid the “black hole effect,” enhancing safety while reducing tunnel lighting energy consumption
Extremely low traffic volume with long periods of no vehicles at night; on-demand lighting yields exceptional energy savings and significantly reduces maintenance costs in remote areas
Low nighttime travel demand; lighting activates only when needed, balancing safety and energy efficiency while reducing light pollution
Integrated into broader smart management systems, enabling lighting to respond dynamically to pedestrian and vehicle movement, improving management efficiency and user experience
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Our Smart Enforcement Solution supports scenario-specific customization and algorithm adaptation. Contact us for technical discussions and solution development.
