Ive been done 3 times for speeding so far :)
1st was 43 in a 30 (speed gun)
2nd was 38 in a 30 (speed camera)
3rd was 94 on a motorway (traffic police)
Im fully aware of the fact im breaking the law when speeding. Its a chance i used to take. I have however, grown up now and dont take the piss anymore!
The 40 mph limits set on motorways / dual carriageways are, as stated earlier, there for the workers safety as many a twat has gone ploughing through the roadworks and nailed a worker.
Whether the guys were working or not at that time is irrelevant really. The limit was clearly signed.
For the record, ive been driving 6 years now.
Have been done for speeding, had accidents, done driver training courses and currently drive around 35-40k miles a year.