Strangely, I was talking about tthis with my other half this morning when going through the 50s on the m5 in Glos.
She got stung in Cardiff for 34 in a 30. She was told on the course that they were more likely to offer a course to non-locals as they aim for people to be able to judge the limit based on road furniture, not just signs. 10 minutes later she predicted a 30 on an unknown road near stroud. As we rounded the corner, there were the signs. Fair play, maybe it works.
So I guess logically if you're local you are more likely to know the roads so speeding is less likely to be a mistake and more a conscious decision.
