There is a long, straight 30 mph limit I know which has numerous urban side turnings.....?

but it is easy to overtake. At either end you inevitably have to wait at a junction. I have noticed that 80% of the cars that zoom past me are to be blunt old bangers and not all driven by post adolescent young men. Is this a sign that the problem many low achievers have is simply lack of self discipline? After all, when you look at some of the 'customers' on police camera action.........