My friend and I must drive one way from Los Angeles to Boise in mid-January. I’d appreciate advice about the safest route to travel, how to research potential weather hazards, and advice about how to break up the trip. We suspect 3 days would be a good plan. We are not experienced in driving in snow and ice, so wonder if the best route would be through Salt Lake City, to keep us on the Interstates as much as possible. Others have mentioned “map apps” that are useful for learning about weather hazards, etc.—would appreciate any recommendations for which ones are useful for winter travel planning. All advice welcome. Thank you.