The Traffic Engineer is hereby empowered to cause suitable street signs or markings to be placed on or along streets near or upon which any hospital is situated warning the public of the proximity of any such hospital and indicating the general direction in which the hospital is situated. Any person who shall make or cause to be made any unnecessary noise calculated to disturb the quiet of any inmate of any such hospital at any place between any such sign and such hospital or at any place situated within the general area indicated by such signs or markings to be in the vicinity of any such hospital, shall be guilty of a misdemeanor. (Code 1962, § 26-6)