By that very action of "close calls", those drivers have fallen below the standard required of a normal driver (the norms are published somewhere on gov.uk), so are in the category that should be removed from the roads ASAP, aren't they?
Yes. Go get 'em tiger.
Like almost everything to do with language, that terminology is subjective, I was clarifying that the roads are not made of 2 types of driver but more importantly using the point to also redirect to lower half clothing. End of :-)