Any truck and trailer combination over 26,000 pounds requires a class A license. Does not matter if for commerce or not. This includes pickups with large 5th wheel travel trailers. Weight is determined by the manufacturer sticker on truck and trailer. It does not go by the registered weight. Basically as long as under 26,000 pounds anyone with a class d license can pull that combination. As far as large motorhomes. If over 26,000 pounds a special R endorsement is required. To get that endorsement you need to take a road test in your motorhome, or one over 26,000 pounds. If pulling a trailer behind the motorhome that puts you back to needing a class A license. These according to the officers are the laws here in Nys. They also stated they do not rarely if ever bother with travel trailers, motorhomes, or people with any type of recreational trailer. They are mostly after people operating for commerce. Anyone out making money with their truck and trailer is commerce. They said people always try to bs them on it and fail. They said occasionally they pull over someone doing work for themselves at a property they own or for a friend/relative but that is almost never the case. They said when a truck has Not For Hire on it a red flag goes up. The officers said people put that on their vehicle thinking they won’t get pulled over or stopped but the officers said they pull them over all the time and find that they are using the vehicle and or trailer to make money. So basically stay under 26,000 pounds, don’t use it to make money, and remember what your registered for means diddly. There are all kinds of endorsements for farm vehicles and licensing. Biggest thing they said that stuck with me was - most people will never get pulled over by Dot with a travel trailer, motorhome, or recreational trailer. Where the problem lies if there ever was an accident with someone driving out of class the lawyers would be all over it with huge lawsuits. Just something to think about. They spewed out a lot more info and my head was swimming by the time they were done. I just thought I’d share a few things. Most probably covered by John and others in the previous thread.