We're spoiled here in QLD. The camera's have to be in an obvious place and all fixed camera's have huge signs pointing them out. Anyone who gets done by a fixed camera up here is a moron.
That said, I just got done from half a kay away by a cop over a hill. Got done again by a black van behind a tree at midnight. Then I got done again doing FIVE over by a trayback ute undercover camera!?
So despite all the measures put in place to make sure they're obvious... there's still idiots that get done...