Md. Code, Alcoholic Beverages and Cannabis § 6-321

(a) In this section, “public property” includes property that is:

(1) a structure, road, parking area, or grounds; and

(2) located on land owned, leased, or operated by:

(i) the State;

(ii) a county;

(iii) a municipality;

(iv) the Washington Suburban Sanitary Commission;

(v) the Maryland–National Capital Park and Planning Commission;

(vi) the Montgomery County Revenue Authority; or

(vii) the Washington Metropolitan Area Transit Authority.

(b) (1) Except as provided in paragraphs (2) and (3) of this subsection, an individual may not consume an alcoholic beverage:

(i) on public property;

(ii) on the mall, adjacent parking area, or other outside area of a shopping center;

(iii) on an adjacent parking area or other outside area of any other retail establishment; and

(iv) in a parked vehicle located in an area described under item (i), (ii), or (iii) of this paragraph.

(2) An individual may consume an alcoholic beverage on:

(i) public property if authorized by the governmental entity that has authority over the property; or

(ii) private property described under paragraph (1)(ii) through (iv) of this subsection if authorized by the owner of the property.

(3) If the owner or operator of a motor home or chartered bus has consented to the consumption of the alcoholic beverages, paragraph (1) of this subsection does not apply to passengers:

(i) in the living quarters of a motor home equipped with a toilet and central heating; or

(ii) of a chartered bus in transit.

(c) (1) A violation of this section is a Code violation and a civil offense.

(2) A person who violates this section:

(i) shall be issued a citation under § 10–119 of the Criminal Law Article; and

(ii) is subject to a fine not exceeding $100.