Step 1. Be smart and don't meander in little traveled parts of the world in poor weather.
Step 2. Cell phone.

For most urbanites and suburbanites, you can't physically get far enough away to be out of sight from someone for any appreciable length of time.

If I was cruising the wastelands of Montana, I might change my tune.

Something I don't see (but may have overlooked) is a decent bag. Looking at Buffalo this past week, with 24+ hours of stranded vehicles, it seemed like many folks left the cars and stayed at shelters. Cops and FF on ATV's to help pick up. Seems if you had a decent bag and a pair of dry socks, they could have walked instead of waiting for a ride. A pair of shoe shoes would have been a nice, if bulky, addition. I have 2 bags in my kit, neither backpacks, but could work in a pinch for a survival/Go Bag.