A member of the familly is a bit worried because he is not sure if he went through a red light
My question is - if the traffic lights have those cameras on them , does it automatically follow that , ( if he did go through on red ) he would have been snapped ?
The 'cameras' on top of traffic lights are not cameras.
They are sensors to detect vehicles. At quiet periods the lights will not change to green for an empty road.
Cameras to detect jumped lights are set back from the lights.
stop worrying yourself if it was a camera you would find out within a few days but as every one selse says the thing at the top of the traffic lights is a sensor
and the is usually set a few feet away from the traffic lights