In reality I have 3 points of average speedcams, start, (with the coordinates of all the points at which they begin the traits controlled), warning, (with the coordinates of an intermediate point of the controlled section), end, (with the coordinates of the end of the controlled section).
In my categories I set the TYPE 4, (Average speed camera), as beginning of the stretch, and TYPE 10, (Town entry point), as the end of the controlled section

But if the table uppeared with Speedcam info's only after passing the end point, it is too late, the damage has already been done, then it is better to also use the intermediate point, in order to remedy in the remaining tract.......

It is also true that when you find the starting point, travel at the speed limit allowed in that stretch, you do not have problems