What is the black rectangular thing on the hanging pole by the traffic light.?

Question:
I see it on some traffic lights that hang over the street. Is it some kind of signal or camera?

Answers:

How come we get better mileage on the highway than the city?

It's probably the sensor that tells the light how many cars on on each side of the intersection.

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Why is is that all you Canadians can't drive. Left side passing lane is used for slow drivers.?

its the CIA watching you. try not to fidget or look nervous at stop lights. this arrouses their suspicions.

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How much would a driving lesson with BSM cost?

a bomb

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Can I claim gasoline cost to work on my taxes?

cameras

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Anyone here all ways looking for the cheapest petrol station to buy your fuel?

Usually a camera, so they can get the license plate number of the people who speed or run red lights.

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