Which areas use less salt on the roads?

I wonder how they control this… Just North of Tucson, Arizona, is Mount Lemmon, the southern most ski resort in the country… They do not get snow many times of the year, but when they do, the police set a roadblock to prevent those with inadequate winter driving tires, chains, etc… from going up the mountain in the snow… They believe stationing a police officer there controlling traffic is a whole lot more efficient use of resources than what would be required if all those (I can drive in anything mentality…) ill prepared drivers to be rescued once they run off the roads, having accidents, etc…

PS: on some of the lookout points, are he hulks cars that ran off the road years ago…

And I posted about this several years ago…

tenor