[tomkarlo]

Potentially, a self-driving car (or even Google Maps nav and a regular driver) would not have this problem - it would simply not drive itself into a situation where it's both in heavy snow and a place that's not safe to stop. I've had a few times in California where I started a long drive in sun and warm weather and ended up stuck in a snow-storm mid-drive (hello Sierra passes)... it would have been nice if either my car or my map software warned me this was likely before we set off.

[DrScump]

  it would simply not drive itself into a situation 

Autonomous cars would be coming from a variety of vendors each with its own algorithms. It's not even guaranteed that they would communicate with each other to arbitrate strategy under adverse conditions.

[tomkarlo]

It's not as if human drivers do, either. The closest we've come is Waze, which would a trivial data set for an autonomous car to both utilize and supplement.