There is no way this would be enforcable.
As an aside all red-light cameras I have seen work on induction loops and need a fair lump of metal moving at a speed to trigger them, so it would have to be people staring at CCTV to pick up and report law breaking..... Sure they'll be quing up for that job!
So a HUGE waste of everyone's time and money for something that isn't actually a huge problem IMHO
