Maryland Alcoholic Beverages Section 12-202.1

      In Anne Arundel County a holder of a beer, wine and liquor license, Class D, for the sale of alcoholic beverages on any premises, may not sell or permit to be sold or furnished upon any premises, any alcoholic beverages, except in a room having one or more plain glass windows on the street or highway. This enables persons standing on the ground or highway to observe the interior of the premises at all hours when the sales are prohibited. During those hours any curtain, blind or other obstruction may not be placed before the window or windows.