I traveled last year without tire chains for my Prius. Last year there were places I could not travel without having chains and I am going back to Park City Utah in March to spend a week with one of my sons and family. Last year I stayed in Salt Lake City and didn't drive up the mountains of weather was bad or left early of snow was coming in.
This year I am staying with the family at a rental house so I need to be more prepared for dealing with snow.
I chose a more aggressive tire chain (not wire cable) that uses chain links and they crisscross for better traction.
When I got the chains I noticed I had bought a tire chain for my Prius that has a bonus. It will also work off road.
Now I traveled last year without getting stuck but but not without worry. I crossed many a wet and dry wash and traveled on some sandy roads that could have been problematic for the low clearance Prius.
Now I have an option to help me if I spin my front drive wheels on BLM and Forest Service Land, as long as I don't hang up the body of the car.