While the system you describe does exist a lot in Europe the single cameras are much lower tech. They don’t have to read the license plate (twice!) correctly – they just take a picture. And while the mobile ones (non-descript grey van with blacked out rear windows parked at the side of the road) do use LIDAR, the static ones use just induction coils that are put into the road surface about 2m apart, rivht where the camera is looking. In Germany they’ll often put these coils in both directions of the road and just randomly turn the camera around, though newer ones just work in both directions all the time.