I expect that they're not ready for the ice and snow even in a place they know about.
No joke. I’m in Minnesota but usually away from superior where we get lake effect snow. The Upper Peninsula gets quite a bit and anyone that lives in the upper Midwest or around the lakes knows when it is blowing, or gets deep, or is around freezing so it’s soft and sticky, or so cold it won’t melt off and builds up, all of those crap the bed of most every sensor system in every vehicle. It’s simple, even sensors that can see ok through snowfall do not work with 4” of ice and snow over them, and it happens fast so it does not work to clean them because they foul in minutes. In fact, it can be difficult for humans to see and navigate in and we still have superior reasoning, prediction, and spatial visualization in the real world.
Are these most days? No, it’s even snowing less these days. But on the days it does happen, not getting stranded is pretty important.