Maryland Transportation Section 13-607
§ 13-607.
  (a)   A person may not issue any temporary registration plate that contains any misstatement of fact.
  (b)   A person may not knowingly insert any false information on the face of a temporary registration plate.
  (c)   A dealer may not issue a temporary registration plate to any person who has annual registration plates for a vehicle that has been sold or exchanged.
  (d)   A dealer may not lend a temporary registration plate to any person.
  (e)   A dealer may not use a temporary registration plate on any vehicle that the dealer owns.
  (f)   A dealer may not otherwise issue, assign, transfer, or deliver any temporary registration plate to any person for any reason except as authorized by this part.