As the other poster pointed out, compliance with winter tire rules is a solved problem, as it is done in Quebec and various parts of Europe. That said, what I w

As the other poster pointed out, compliance with winter tire rules is a solved problem, as it is done in Quebec and various parts of Europe. That said, what I was trying to say there is that politicians don't want to touch the "too much salt" issue–not the tires issue–because at least so far, it's been like buying IBM: "nobody gets fired for telling the DOT to go hogwild with the salt". They only get bad press if they're not perceived to have done enough to get the roads clear.