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Science in the City: Traffic Signal Science

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Uploaded by on May 25, 2011

Red means stop, green means go—simple enough, right? But traffic lights are just a small part of the sophisticated science of traffic engineering. San Francisco Traffic Engineer Eddie Tsui takes us on a wild ride through his world, from computer simulations to ever-evolving detection technologies.

Watch the Exploratorium's complete Science in the City series at http://www.exploratorium.edu/scienceinthecity

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