Cell phone signals help manage traffic

In a pilot project in Texas, Siemens is developing intelligent transportation technology for the fast and orderly evacuation of citizens. In this project, traffic light timing systems register traffic flow and adjust the phases of red and green light accordingly. The traffic density data collected by the systems is also incorporated into digital road maps, which drivers can download onto their smartphones or navigation systems in order to find the quickest routes out of town. In an emergency, the system can centrally control all traffic lights. The U.S. Department of Transportation supports the project in its IntelliDrive program, a research initiative focused on networking vehicles and infrastructure.

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