Another challenge in the southern states is lack of experience. There is a skill and procedure for clearing roads. If you have to plow 4 - 5 days a week, you get pretty good at it. When you have to plow 2 - 3 times per winter, you end up with a learning curve! Also, I've found that in the south, most days go above freezing. That allows the snow and ice to melt and flow across the roads. When that refreezes at night, we end up with black ice. Except for using studded snow tires, black ice is always a challenge.