>>770904CDL is a "commercial drivers license". If you're not driving commercially, you don't need a CDL... that part is correct.
But in most states, a regular "Class R" or "Class D" drivers license has a weight limit - 26k lbs. Once you push over that limit, you do need a higher class license (or endorsement in some states).
If the trailer's over 10k, some states require a higher-class drivers license.
Types/classes of license depends on the state, but the weights are usually 26k total/10k trailer.
Our big truck/trailer scales around 22k. Driving that is a bit different than driving my pickup at 6700 empty, and a lot different than a compact car weighing less than half that.
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