They do, however the roads are, potentially icy, certainly after a storm, which means that you can't measure consistently, even if you're trying because some days the roads will be impassable.

If someone's not used to driving in snow, it'll be even worse. You should not let them drive if there's snow/ice expected in the next day; or the roads haven't been cleared yet. As someone who grew up in Minnesota, I can tell you that yes, we are better at driving in snow than people down south. However, we go in the ditch a lot anyway.