Yikes... I know some other sites that mirror our rules on no politics or religion ... but also add "No 'do I need a CDL?'" questions, either

From being intensely interested in this very subject, and reading multiple threads on it on the ATHS site and the Steel Soldiers site, the truth seems to be that there is no definitive answer to Don's question. The best advice I've seen is as given above -- Call your state DMV, talk to the commercial motor carrier folks, tell them your situation and get them to tell you in writing (email is good, too, as long as a name and phone number is included) what the requirement is. And then keep it with you in the truck! Until the Feds/States address the issue of hobbyists running around in former/antique commercial vehicles, we don't have an answer other than our local DMV's interpretation.