Quote Originally Posted by WR6133 View Post
Quite a lot of the motorway stuff I don't think is turned on. Not that I'd ever speed but I'm very sure the Cameras between Bristol and Cardiff are not operational.
They are on for sure mate, not only when the limit is flashing, but all the time. They must be set with a tolerance, but ive seen plenty of people caught, especially early morning when the roads clear.
Another place ive seen with fixed average cameras is the elevated 50mph section of the m4 by Port Talbot, there used to be gatsos, but they have been replaced, and the cameras are mounted on the gantry bridges on both sides.