Just noticed a small blue light on top of our local traffic signals. What is it?

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Answers:

Damsel in distress with Peugeot?

its for ambulance and emergency vehicles. they have a program in there vehicles that they can push to change a light from red to Green

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I have a 88' Mercury Grand Marquis....?

could be the sensor to tell if any cars are there

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How many huskies would it take to pull an SUV?

don't worry about it, just people are watching your every move.

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What are the long-term service and maintenance concerns with Hybrid vehicles?

Speed camera?

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Do you have to warm your car up before you drive it in the cold weather? If so, how long should it warm up?

Probably a camera...it will take a picture of you, if you run a red light.

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How to rent a vehicle without a credit card?

Its served quite a bit purposes: A speedometer sensor to activate traffic camera at some major intersections, or a well known traffic accident occurences. A motion detector if pedestrians are present
this will send a signal to traffic main computer usually resided next to the corner. Ambulance sensor to activated whenever the
flashing signals from car ambulance in flashing rotation and automatically direct traffics to either yellow traffic light to slow down and/ or red light...just some of the fews modern age technology...

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