Do you need a CDL to drive an RV? For most RVs, the answer is no. However, if you're driving a Class A motorhome or towing exceptionally large or heavy trailers, some states require special licenses. Weight and length thresholds vary by state, with some requiring a CDL or non-commercial Class B license for vehicles over 26,000 lbs or longer than 45 feet. While you can title and register your RV in a different state, your driver’s license and domicile dictate which state’s licensing rules apply. Understand the requirements in your state to stay compliant on the road.