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sensor for the traffic light with green light on the plate
Fei C
Fei C May 09, 2013
sensor for the traffic light with green light on the plate

I've seen these sensors...

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Similar Photos: Motion activated lights create fun interactive light show in Indianapolis Terminal re parks play an important role in the lives of the urban population. Inteligent sempahores. We have at least 2 of them being tested on traffic jam avenues. They detect cars and can change before countdown ends

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