I would like to drive at 30mph, if it is safe to do so. I would be ok driving at 20mph for a short distance, but not for a long journey. Following your logic, would 10mph rather than 20mph make much difference ?
From what I've read it's only roads that were restricted to 30 mph that now have a 20 mph limit and there's roads in built up areas all over the country that have 20 mph restrictions, just not all of them like in Wales.
I don't see your logic when you say 10 mph as that is 20 mph below what it was not the 10 mph below that has been introduces. To be honest I don't think driving around built up areas at 10 mph below what you could before having a major effect on journey times.
How long a journey do you have purely driving in built up areas?
