Is this vehicle considered a commercial vehicle

There also signs in MD that all vehicles over 10,000 GVWR need to stop at weigh stations. You should verify when calling. That was part of why I went with 3/4 ton.

Just curious why you didn't contact the MD DOT in the first place. A simple telephone call, or visit to the DOT website should get you the information you need.

The only way to find out is to contact the MD DOT. Any other answers would be speculation.

Here in Montana, no. CDL for driver, or commercial plates, no.
In any other state, I have no idea.
I have heard that some states require Commercial plates for ALL open-bed trucks. If the owner puts a topper or camper on it, then non-commercial plates are just fine. Just don't get caught driving it without the topper or camper!
OP, what does the law in YOUR state say?

F350's and 3500's generally do not require DOT licensing is necessary. However, if the vehicle is used for hire (for example, you use it for business purposes, hauling a utility trailer with supplies for a company, or if you are a contractor, or carpenter, or into construction and use it for transporting equipment and / or products, then yes,... you'd need the DOT license.

If for your private use, then no. I do think the F350 and 3500's do need a commercial type licensing in Australia, from what I've gathered on these forums. But, Maryland is a long way from Australia! :B

When you get into the MDT trucks, then you start getting into questionable territory.

DOT for the vehicle is not necessary unless for hire.