Not all gooseneck trailers require a CDL. However, if your trailer is over 26,000 lbs., you will most likely need one. In general, a Class A license is required if the Gross Vehicle Weight Rating, or GVWR, of both the trailer and towing vehicle, is greater than 26,000 lbs. It’s also required if the trailer itself weighs more than 10,000 lbs.  A Class B license is required if the GVWR of both vehicles exceeds 26,000 lbs. and your gooseneck trailer is less than 10,000 lbs. A Class C license is required if your trailer is being used to transport hazardous materials or more than 15 passengers. You should always check with the Department of Transportation and on your state’s official website to learn the most recent requirements for your area. If you are making a cross-country trip, don’t forget to check the requirements for each state that you will be passing through.