Comment Re:Montana used to have no speed limit at all... (Score 1) 525
The reason I ask is that here in the UK the official speed limit on motorways is 70mph, but police can't pull you unless you're doing 10% + 2mph over the limit, so 79mph on a 70mph limit road.
This is not true. The 10% + 2 rule is a discretionary guideline that the police tend to use. In principle they can prosecute at any speed over the speed limit.
http://www.acpo.police.uk/docu...
Section 9 is the relevant part.