As per the OP's first post you will need a CDL to pull a trailer over 10K in the US with exceptions being RV's and farm use equipment. Commercial trailers over 10K and trucks over 26k need a CDL if your using it to move material, goods or equipment in exchange for money. I'm not a lawer or DOT officer so please check with your local DMV. On the back of my license it has endorsements only no restrictions. P-passenger >15 including driver. T-Double/Triple Trailer N-Tanker >1000 gallons This is a class A Combination vehicals >26000 lbs GCVW I have a section open for restrictions but there are none listed. I do how ever know that I'm not alowed to operate a school bus with students on board with out a special course from the TN DOT.