Maryland Code, Transportation § 26-302

(1) Deliver a citation to the driver or, if the vehicle is unattended, attach a citation to the vehicle in a conspicuous place; and

(2) Keep a copy of the citation, bearing his certification under penalty of perjury that the facts stated in the citation are true.

(c)(1) A citation issued under this section shall include a box that the person issued the citation may check to indicate that the registration plates cited were not issued for the vehicle described in the citation.

(2) A political subdivision, State agency, or third-party contractor authorized to conduct parking enforcement on behalf of a political subdivision or State agency that issues a citation under this section to a person who returns the citation with the box checked as described in paragraph (1) of this subsection:

(3) After the verification process initiated under paragraph (2) of this subsection, if the political subdivision, State agency, or third-party contractor finds that the person issued the citation should not be held liable for the citation, the political subdivision, State agency, or third-party contractor shall dismiss the citation.

(4) A person may not submit a citation with the box checked as indicated in paragraph (1) of this subsection to a political subdivision, State agency, or third-party contractor if the registration plates cited were issued for the vehicle described in the citation.