perfect timing: los angeles synchronizes all of its 4400 traffic signals /

Published at 2013-04-17 21:45:48

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ByEditor's Note: Listen to the full story in our player above,and join the conversation in our comments section below. (CNN) – win a ride with me on a major thoroughfare in Los Angeles. The city's mayor, Antonio Villaraigosa, and just announced that all 4400 traffic signals along all 7000 […]

Source: cnn.com

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