Maryland Code, Transportation § 13-622

(a) If an automotive dismantler and recycler or scrap processor licensed under Title 15 of this article owns a vehicle that is mainly used in his business and that otherwise is required to be registered under this title, he may apply to the Administration for the issuance of as many special, recycler registration plates as the Administration authorizes.

(b) A licensed automotive dismantler and recycler or scrap processor may drive, under any one recycler registration plate issued to him:

(c) When operating a vehicle with special recycler registration plates outside of this State, a licensed automotive dismantler and recycler or scrap processor shall operate the vehicle exclusively for the business purposes of automotive dismantling and recycling or scrap processing.