Maryland Health - General Section 24-207
§ 24-207.
  (a)   The Department shall adopt rules and regulations to carry out the provisions of this section, including:
    (1)   Standards for marking transparent glass doors; and
    (2)   Definitions of "business establishment", "public building", and "commercial building or structure".
  (b)   In each business establishment, public building, or commercial building or structure, each door that has a surface area of at least 80 percent transparent glass shall be marked so that it warns any individual nearing it that a glass door is present.
  (c)   A person who violates any provision of this section or any rule or regulation adopted under this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $50.