Quote Originally Posted by Taffy_is_a_Taff
residential: usually obey.
weird country roads: usually obey.
motorways, main roads etc.: usually a little over.
These be good generalised rules to go by
Although empty wierd country roads can be fun at speed!!

On a British main road (speed limit 60 mph) I am quite happy to sit behind someone doing 50-60, but get annoyed with those doing less than this and feel the need to overtake them.