Sydney Coordinated Adaptive Traffic System
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The Sydney Coordinated Adaptive Traffic System (SCATS) is an intelligent transportation system developed in the Australian city of Sydney. It is also used in Hong Kong, Tehran, Dublin, and soon in part of metro Atlanta[1], among several other places. In total, about 11,000 intersections in 35 countries use the system, according to TransCore, which holds the distribution licence.
The system uses traffic cameras or induction loops installed within the road pavement to count vehicles at each intersection, and adapts the timing through a centralised computer.
Other such systems include UTOPIA/SPOT and SCOOT.
The system is called Canberra Automated Traffic Signal System (CATSS) in Canberra.