2. Second Generation Area Traffic Control System

Area Traffic Control Systems or Adaptive Traffic Control Systems (ATCS) belong to the latest generation of signalized intersection control. They operate in two levels (1) the traffic signal controller and vehicle data collection devices installed at every traffic junction at the local level and (2) the signal time optimization algorithm or ATCS Engine running on a Server Class machine at the Traffic Command and Control Centre (TCCC) at the central level. The traffic signal controllers at the intersections will collect traffic data on every road approach using vehicle detectors; preprocess the vehicle data and send it to the ATCS Engine over a robust communication network. The ATCS Engine will evaluate the traffic data in real-time for developing optimum signal timings for every approach in the entire road traffic network under the ATCS. These optimum signal timings computed by the ATCS will be sent back to the traffic signal controllers for execution in real-time. This closed loop operation of vehicle data collection and signal time updates is targeted towards minimum stopped delays and improved travel times under the ATCS operating zone.

Composite Signal Control Strategy (CoSiCoSt) is the Adaptive Traffic Control System (ATCS) engine developed and field tested by C-DAC during the year 2004-06. CoSiCoSt is commercially implemented at various parts of the country since 2007, directly by C-DAC and through their technology partners. Objective of the subproject SP2 – Second Generation Area Traffic Control System is to develop appropriate model and methodology for improving CoSiCoSt on real-time link travel time estimation. This development was carried out jointly by IIT Bombay and C-DAC, Thiruvananthapuram.

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Group Head, Intelligent Transportation & Networking Group (ITNG)
Centre for Development of Advanced Computing (C-DAC) Thiruvananthapuram
Kerala - 695 033, Email: its@cdac.in
Tel: +91 471 2726731, +91 471 2723333

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