Maryland Transportation Section 16-107
§ 16-107.
  (a)   The application of a minor for a license shall be cosigned by:
    (1)   A parent or guardian of the applicant; or
    (2)   If the applicant has no parent or guardian or is married, an adult employer of the applicant or any other responsible adult.
  (b)   The individual cosigning the application of a minor shall:
    (1)   (i)   Provide the cosigner's mailing address to the Administration; and
      (ii)   Within 30 days of any change in the mailing address occurring while the applicant or licensee is a minor, notify the Administration of the change; and
    (2)   Certify that the statements made in the application are true to the best of the cosigner's knowledge, information, and belief.