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traffic signal sensor
Fei C
Fei C May 09, 2013
traffic signal sensor

I've seen these sensors...

Often 1
Occasionally 1
Rarely 0
Never 2
What is it? 0
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Similar Photos: In Paris, today.  DS 3D to guide you to visit the museum of Le Louvre with GPS and WI-FI. Radar station This is safety gate at the platform of Tokyo Metro (main subway in Tokyo).<br/>This gate opens automatically when the train comes.

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