05/19/2010 05:12 am ET Updated May 25, 2011

Smart Traffic Lights Preserve Fuel, Prevent Accidents

After smart grids, smart sewage and smart lights, here comes the smart traffic lights. To be fair, many lights already have some sensors and can adjust their cycles based on feedback from the road, but what I'm talking about here is on a whole other level. BMW and Siemens unveiled a system of networked traffic lights that can communicate with nearby cars to warn them about road conditions, help them better use anti-idling features, but that can also learn about traffic patterns from those cars and adjust cycling times to optimize traffic flow, saving time and fuel.

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