The benefits of smart traffic lights and road signs are underestimated
Road traffic management systems comprise a number of applications that monitor and analyse traffic congestion and ensure the smooth flow of traffic at peak times and during emergency situations, such as following an accident, for example. Increasingly, these systems are being integrated into intelligent transportation systems (ITS) that are capable of accommodating several different traffic applications. In some cases, deployments are still vertical, with the city deploying one or two traffic management applications that may or may not be connected to each other. Many urban centres and national motorways now benefit from connected road signs or traffic information systems, which provide real-time information about road conditions such as congestion, roadworks, and accidents, and can automatically apply a number of measures such as speed restrictions and lane closing. Traffic lights can also be controlled remotely in order to maximise traffic flow at intersections, especially at peak times or in the case of an accident or roadworks. They can also be connected with public transport vehicles such as buses and trams in order to ensure priority right of way for public transport.
This Implementation Guide provides guidance to city managers on how they should best deploy connected road traffic management systems. It examines the business case for their deployment and provides five case studies: Smartway in Japan, Sydney Coordinated Adaptive Traffic System (SCATS) and systems deployed in Santiago, Chile, San Antonio, Texas, and Copenhagen.
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