Originally Posted by FBinNY

Actual laws like these aren't welcomed by police at all. Police don't like to be charged with enforcing minor infractions of unpopular laws. It's a distraction, and increases the strains between them and the general public.

In any case, a traffic infraction isn't valid cause for a search other than a name/warrant search. But I agree that this kind of law is a perfect candidate for selective enforcement, which IMO is one of the best reasons for not having it.