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Speed limit monitors use sensors to measure the speed of a vehicle that passes by it. Helps prevent speeding by reiterating your speed.
Victoria D3
Victoria D3 May 08, 2013
Speed limit monitors use sensors to measure the speed of a vehicle that passes by it. Helps prevent speeding by reiterating your speed.

I've seen these sensors...

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Similar Photos: traffic red light sensor on the train rail Bollard in Amsterdam. It identifies electronic tag in car, so it opens when enrolled car try to enter to special str.(pedestrian str.) photo by Mikael Colville-Andersen (copenhagenize.com)<br/><br/>Sensors show how many cyclists passed a point today and in all since 15 july 2009.

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