But with driving, the rules are fairly transparent, whether it's through the road traffic laws, the Highway Code or road signs and traffic lights. With Europe, it's not clear what "the rules" are, so it's difficult to single out transgressors or free riders. The European project has morphed through the years - and sometimes in directions that are seen as undesirable to British governments. Most Brits, I suspect, have no problem with something they see as "the common market" - it's the rest of the political structure that they're not so keen on.