The Greater Hyderabad Municipal Corporation (GHMC) has rolled out new Adaptive Traffic Signal Control (ATSC) systems to improve traffic management at junctions in the state capital. The ATSC systems change traffic signal colors in real-time based on real-time traffic information.
Composite Signal Control Strategy (CoSiCoSt) is a state-of-the-art adaptive control algorithm developed by the Centre for Development of Advanced Computing (C-DAC) that coordinates with nearby intersections in real-time to manage area-wise traffic.
Officials say that, unlike regular traffic signals, the new ATSC systems will automatically and continuously adjust the green times based on vehicle arrival patterns at intersections in order to minimize delays and the number of stops.
Based on what it sees, the system creates time sequences based on junction movements and approaching vehicles. The officials said that a central system monitors each junction’s data and further optimizes the system at a network level to ensure signal synchronization to reduce system delays.
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Presently, Hyderabad has 122 ATSC signals, 94 pelicans signals, and 213 HTRIMS signals within the ATSC and Pelican Signal System (PSS) projects. With the completion of the project scope, the major part of the new system – 57 corridors – will be composed of 57 ATSC signals, as well as 157 existing HTRIMS signals.
As a result of ATSC, traffic flows are improved along major arterial routes in the city as delays are reduced at both the local and network level. Pelican signals equipped with push-button facilities provide pedestrians with a safe crossing through pedestrian stages on demand. Signals are installed at strategic locations where pedestrians are present, including hospitals, colleges, and schools.
The main features
- Control of corridor traffic signals from a central location
- Timing of signals based on traffic patterns
- Traffic sensors that use cameras
- Battery and solar power backup
Pro’s of new traffic signal system
- Improved reliability of travel times
- Shorter waiting times at junctions
- Congestion reduction throughout the city
- Fewer stops, Less emissions
- Increased safety on the road
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