What are the cameras on top of traffic lights for?

I found this on a old yahoo answer because i ran a red light by mistake







"In order for you to get a red light camera ticket first the intersection must be equipped with red light cameras for photo enforcement. So, is this a photo enforced intersection? not all intersections are equipped with photo cameras. Sometimes you may see a camera at an intersection but it may be for monitoring traffic rather than enforcement. Second, did you notice any flashing lights? If yes, then the intersection is most likely equipped with photo enforcement cameras and your pictures were taken while in the intersection. If so, did you enter the intersection while the light was yellow? It is legal to enter the intersection while the light is still yellow.



For free information on red light camera tickets and how to fight them in court go to http://www.2FixYourTrafficTicket.com/

Source(s):

http://www.2FixYourTrafficTicket.com/





...So....is he right is everything he said true?!What are the cameras on top of traffic lights for?
It varies a bit by country, but in general the 'cameras' on top of the traffic lights are infra-red detectors, used as an alternative for detecting traffic where sensors can't be easily put into the road.



Red light cameras usually require a larger setup and are often quite noticeable.What are the cameras on top of traffic lights for?
The real thing them little cameras are for is if you jump a red light they go off as you are a hazzard to peoples safety and can suffer points on your licance and a fineWhat are the cameras on top of traffic lights for?
speed cameras