Zurich Installed 4,500 Street Sensors to Count Every Car in the City

Congestion pricing—the implementation of high tolls to keep cars out of congested downtown areas—is one of the most effective ways to reduce traffic and emissions. Zurich's plan goes above and beyond that, using a network of sensors to track the number of cars that enter its downtown and prevent more cars from… » 10/16/14 3:46pm 10/16/14 3:46pm