National Highway Actuated Signal Control System
Adjusts green time at national highway intersections in real time based on vehicle detection.
Cuts unnecessary waiting during low-traffic periods.
Solution
Left-turn and pedestrian actuation for smoother traffic flow
Skips unnecessary signal phases or runs shorter cycle lengths to improve main-road flow and reduce signal violations and traffic accidents. A video-detection traffic signal system that can also detect pedestrians.
- Actuated signals matched to left-turn volumes improve through-traffic flow on the main road
- Video-based pedestrian recognition automatically requests and extends pedestrian signals
Camera-based video detection
- Detects vehicles waiting to merge onto the main road
- Detects vehicle count, vehicle type and direction of travel
- Measures and analyzes traffic volumes
Actuated signal controller
- Uses the 2010-standard traffic signal controller
- Controls signals based on input from the vehicle video detector (edge device)
- Real-time integration with the video detector
Pedestrian push button
- Operates together with the video detector
- Pedestrians request a walk signal by button while waiting
- Allows pedestrians to request a signal directly in emergencies
Pedestrian video detection
- Automatic pedestrian detection using intelligent video analytics
- Accurately detects a wide range of objects, including children, wheelchairs and strollers
Detection zone marking
- Marked video detection zones guide vehicles to stop at the stop line
- Minimizes detection errors caused by improper stopping
VMS guidance messages
- Displays pedestrian signal guidance and actuated signal status
- Displays messages that alert drivers to approaching pedestrians
Strengths
Key system features
Pedestrian signal extension
- Recognizes pedestrians through camera video analysis and automatically extends the pedestrian signal
- The camera recognizes pedestrians and triggers the walk signal without anyone pressing a button
Left-turn actuated signal
- Skips or minimizes unnecessary signal phases at locations with low left-turn volumes to improve main-road through traffic
- Check detector data and status in the system, and set the direction and phases of actuated signals
Pedestrian detector VMS display
- LED display driven by pedestrian detector signals
- Classifies and detects pedestrians with a high detection rate (pedestrians, PM riders, general pedestrians, etc.)
- Highly visible display delivers guidance messages late at night and after dark
Pedestrian voice guidance
- Broadcasts safety voice guidance to pedestrians in hazardous zones and those waiting to cross
- Complies with the Korean National Police Agency standard guidelines for pedestrian signal audio guidance devices
- Supports TTS and audio files for extensibility
Architecture
System Diagram
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