Yes, if your recreational vehicle runs on its own motor, you must carry at least enough liability insurance to satisfy Washington state’s minimum liability limits.
If your RV is a travel trailer, pop-up camper or other type of RV that must be pulled behind another vehicle, your auto liability coverage may provide adequate coverage if the RV is listed on your auto policy.
However, your auto or RV liability coverage does not help repair or replace your property after an accident. Collision and comprehensive coverage and several other types of insurance may help pay for damages to your vehicles after an accident.