Are the cameras right above traffic lights used as sensors for cars?

Most of what look like cameras on top of traffic lights are actually devices that detect responding emergency vehicles and change the lights so that they can get through the intersection safely. Many emergency vehicles have a strobe installed that activates when the emergency lights are turned on, and this strobe triggers the sensor above the light.Are the cameras right above traffic lights used as sensors for cars?
Yes, they are connected to all the other 'Sensors' on top of other traffic lights within a city or area...these are all connected to a big computer which controls and eases traffic flow by triggering red and green lights where, and when the times are right.Are the cameras right above traffic lights used as sensors for cars?
No. Not if you mean sensors to see if there is a car waiting for a light to change. There are induction loops in the ground for that. The cameras monitor intersections and may be used to ticket drivers who run red lights.Are the cameras right above traffic lights used as sensors for cars?
No, they are used in traffic court.
Yes