Traffic Light Control
Traffic light control?
Many signal controllers are unable to automatically adjust signal timing based on real-time traffic flows, which can lead to long traffic queues during peak hours, requiring more police resources to manage traffic.
System Overview

Dahua VACS Solution is a system that can extend traffic light intervals according to the length of the detected vehicle queue at intersections. It adopts a traffic flow camera to detect information such as traffic flow, forward speed, average speed, occupancy, and queue length. It effectively improves traffic conditions by adjusting to clear traffic faster. In addition, the system works independently and does not require a central software platform.
• Solution Details
>> Traffic Data Collection
Traffic data collection helps to better manage traffic signals and provides more efficient signal adjustment based on real traffic data. Traffic authorities can use real-time data to better understand current traffic conditions and improve dynamic green light management, which can greatly reduce vehicle idle times. Signal times can be adjusted according to actual conditions to provide more time for vehicles on congested roads during morning and evening peak hours.

>> Adaptive Signal Control
A traffic flow camera detects vehicles in predefined lanes and sends the length of the vehicle queues to the controller via an Ethernet connection. The controller then triggers and automatically improves signal timings.

• Features and Benefits
The integration of previously uncoordinated or pre-arranged signals and the provision of new optimized time schedules and a central master control system can result in a 10-20 percent reduction in travel time.
>> Features and Benefits
>> Reduces the number of stops.
>> Reduces travel times.
>> Reduces fuel consumption.
>> Reduces costs.



