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Originally invented in 1920 by William L. Potts, automatic traffic signals have become a key element of our transportation infrastructure. Now it's time to take the next step with smart traffic lights to not only drastically reduce traffic congestion and increase fuel efficiency.
Smart Traffic Lights Could Double Fuel Efficiency
Seeded on Wed Dec 2, 2009 11:03 PM EST
Article Source: FOXNews.com- Enjoy this article? Help vote it up the 'Vine.
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