The ice storm that hit Texas recently caused over 1400 accidents in San Antonio alone. An RV is heavy, but can still slide on icy roads. Tow vehicles are an added danger on highways slick with rain, snow or ice. Other people may not realize just how long you are when they try to pass, and if there is a bridge coming up on the highway that is iced over, it's an accident waiting to happen. It might save you repair costs to your rig.
Pipes freeze here, too.
If you are planning to spend a whole season in one park, start out right. Winterize your water hose with the foam tubing available for pipes in most hardware centers. Make sure you have enough propane. This can be a real problem, especially in a Motorhome. Waking up and finding your heat is out, can also be dangerous to some of us who have health problems.