Maryland Public Utility Companies Section 10-402

      (a)      A person may not operate a vehicle that provides passenger-for-hire services in the State:

            (1)      unless the person is licensed as a passenger-for-hire driver by the Commission; or

            (2)      in violation of this title or Title 9, Subtitle 2 of this article.

      (b)      A person may not operate a vehicle that provides taxicab services in the State:

            (1)      unless the person is licensed as a taxicab driver by the Commission or a county or municipal corporation; or

            (2)      that is under the jurisdiction of the Commission, in violation of this title.

      (c)      Subject to the hearing provisions of § 3-102(c) of this article, the Commission may impose on a person who violates this section a civil penalty not exceeding $500 for each violation.