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Many signal controllers are unable to automatically adjust signal timing based on real-time traffic flows, which could lead to long traffic queues during rush hour, requiring more police resources to direct traffic.

System Overview

The Dahua VACS Solution is a system that can extend traffic light intervals according to the detected vehicle queue length of road intersections. It adopts a traffic flow camera to detect information such as traffic flow, headway, average speed, occupancy, and queue length. It effectively improves traffic conditions by adjusting to make traffic clear faster. In addition, the system works independently and does not require a central software platform.

• Solution Details

>> Traffic Data Collection

The collection of traffic data helps better manage traffic signals and provide for more efficient signal adjustments based on real traffic data. Traffic authorities can use real-time data to better understand current road conditions and enhance dynamic green light management, which can greatly reduce vehicle idle times. In the morning and evening rush hours, signal times can be adjusted according to actual conditions to provide more time for vehicles on busier roads.

>> Adaptive Signal Control

The traffic flow camera detects vehicles in pre-defined lanes and sends the length of vehicle queues to the controller through an Ethernet connection. The controller then triggers and automatically improves signal timings.

• Features and Benefits

Interconnecting previously uncoordinated or pre-timed signals and providing newly optimized timing plans and a central master control system can result in travel time reductions of 10-20 percent.

>> Features and Benefits

>> Reduces number of stops.

>> Reduces travel times.

>> Lowers fuel consumption.

>> Lowers costs.