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• Sydney_Coordinated_Adaptive_Traffic_System abstract "The Sydney Coordinated Adaptive Traffic System, abbreviated SCATS, is an intelligent transportation system developed in Sydney, Australia by former constituents of the Roads and Maritime Services in the 1970s, used in Melbourne since 1982, Adelaide, South Australia since 1982 and Western Australia since 1983. It is also used in New Zealand, Hong Kong, Shanghai, Guangzhou, Amman, Tehran, Dublin, Rzeszów, Gdynia and soon in part of Metro Atlanta, among several other places.The system may be referred to by an alternative name in a specific installation (except Sydney), although since deployment wider than Australia, New Zealand and Singapore, these localised names do not appear to be commonly used. The following are some local alternative names that have been or are in use: Canberra "CATSS" (Canberra Automated Traffic Signal System) Melbourne "SCRAM" Adelaide "ACTS" (Adelaide Co-ordinated Traffic Signals) Perth "PCATS" Singapore "GLIDE" Northern Territory "DARTS"In total, about 34,350 intersections in over 154 cities in 25 countries use the system. In Australia, the majority of signalised intersections are SCATS operated (around 11,000).SCATS primarily manages the dynamic (on-line, real-time) timing of signal phases at traffic signals, meaning that it tries to find the best phasing (i.e. cycle times, phase splits and offsets) for the current traffic situation (for individual intersections as well as for the whole network). This is based on the automatic plan selection from a library in response to the data derived from loop detectors or other road traffic sensors.The system uses sensors at each traffic signal to detect vehicle presence in each lane and pedestrians waiting to cross at the local site. The vehicle sensors are generally inductive loops installed within the road pavement. The pedestrian sensors are usually push buttons. Various other types of sensors can be used for vehicle presence detection, provided that a similar and consistent output is achieved. Information collected from the vehicle sensors allows SCATS to calculate and adapt the timing of traffic signals in the network.Public Vehicle priority in SCATS (using data provided from PTIPS) caters for both buses and trams. SCATS has a facility to provide three levels of priority: High – In the high priority mode the hurry call facility is used. i.e. the phase needed by the tram is called immediately, skipping other phases if necessary Medium (Flexible window) – Phases can be shortened to allow the bus/tram phase to be brought in early. The bus/tram phase can occur at more than one place in the cycle. Low – takes its turn. Trams would normally be given high priority, the aim of which is to get the tram through without it stopping. Buses would normally expect to receive a medium level of priority.The architecture of the system is at two basic levels, LOCAL and MASTER. The LOCAL is the control cabinet at the roadside, which provides the normal signal control as well as processing of traffic information deduced from the vehicle detectors. The MASTER is a remote computer which provides area based traffic control, i.e. area traffic control (ATC) or urban traffic control (UTC). Detailed traffic signal and hardware diagnostics are passed from the LOCAL to the MASTER, with the ability to notify staff when a traffic signal has a fault.SCATS is able to operate over PAPL, ADSL, PSTN and 3G IP network connections to each intersection. SCATS can also operate on a network of private cables not requiring third party telecommunications support and large parts of inner Sydney have always operated this way.SCATS is already a recognised worldwide market leader in intelligent transport systems, however the New South Wales Roads and Maritime Services is continuing to develop SCATS to meet emerging technological, user and traffic demands.Hong KongIn Hong Kong, SCATS is currently adopted in the area traffic control systems at Hong Kong Island, Kowloon, Tsuen Wan and Shatin.Instant fault detection and quick repairThe ATC system is equipped with the function of fault detection and logging the fault detected in order to facilitate repair and maintenance. Should there be a telecommunication breakdown, the ATC junction controller concerned will switch to standalone mode and continue to function.Traffic Adaptive OperationATC systems provide advanced method of traffic signal control called Traffic Adaptive Control where the operational timing plans including cycle length, splits and offsets are continuously reviewed and modified in small increment, almost on a cycle-by-cycle basis, to match with the prevailing demand measured by the detectors connected to the on-street traffic controllers.".
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink SCATS.aspx.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink www.rta.nsw.gov.au.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink index.html.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink www.scats.com.au.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink 1.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink trafficsignals.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageExternalLink interaction-of-buses-and-signals-at-road-crossings(1).pdf.
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageID "5720835".
• Sydney_Coordinated_Adaptive_Traffic_System wikiPageRevisionID "596934836".
• Sydney_Coordinated_Adaptive_Traffic_System hasPhotoCollection Sydney_Coordinated_Adaptive_Traffic_System.
• Sydney_Coordinated_Adaptive_Traffic_System subject Category:Intelligent_transportation_systems.
• Sydney_Coordinated_Adaptive_Traffic_System subject Category:Traffic_signals.
• Sydney_Coordinated_Adaptive_Traffic_System type Artifact100021939.
• Sydney_Coordinated_Adaptive_Traffic_System type Facility103315023.
• Sydney_Coordinated_Adaptive_Traffic_System type IntelligentTransportationSystems.
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• Sydney_Coordinated_Adaptive_Traffic_System type TransportationSystem104473432.
• Sydney_Coordinated_Adaptive_Traffic_System type Whole100003553.
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• Sydney_Coordinated_Adaptive_Traffic_System comment "The Sydney Coordinated Adaptive Traffic System, abbreviated SCATS, is an intelligent transportation system developed in Sydney, Australia by former constituents of the Roads and Maritime Services in the 1970s, used in Melbourne since 1982, Adelaide, South Australia since 1982 and Western Australia since 1983.".
• Sydney_Coordinated_Adaptive_Traffic_System label "Sydney Coordinated Adaptive Traffic System".
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• Sydney_Coordinated_Adaptive_Traffic_System isPrimaryTopicOf Sydney_Coordinated_Adaptive_Traffic_System.