When Do the Traffic Camera Starts Working?

Hi

Does anybody know, When do the traffic camera starts working? Is it straight after Amber light, or is it after say 5 seconds?

ThanksWhen Do the Traffic Camera Starts Working?
You are talking about red light cameras. They are always on but may only take a picture as soon as the amber comes on and until the red goes off.When Do the Traffic Camera Starts Working?
around here they are always on. they only take still pix if you run the light- a small traffic computer tells them that.