I think you just answered your own questions. The problem with speed cameras is that they are pointless. Drive down the street and tell me how many people you see speeding. Many? Not really. And those who are technically speeding are probably just a fraction over the speed limit, not hugely over.

Now tell me how many people you see each day buggering around on the road as if they don’t reallise that they are in a 2 ton tank. As you mentioned, hogging centre lanes or just generally unaware of what’s going on. I think you will find it is a much larger number.

Problem is, bad driving is not easily measured with a mechanical device, so it is easier to put up a few cameras. It doesn’t matter if they work, as long as the sheeple think they are getting their monies worth. You can probably count yourself in that group.