The Capitol Police Board, consisting of the Sergeant at Arms of the United States Senate, the Sergeant at Arms of the House of Representatives, and the Architect of the Capitol, shall have exclusive charge and control of the regulation and movement of all vehicular and other traffic, including the parking and impounding of vehicles and limiting the speed thereof, within the United States Capitol Grounds; and said Board is authorized and empowered to make and enforce all necessary regulations therefor and to prescribe penalties for violation of such regulations, such penalties not to exceed a fine of $300 or imprisonment for not more than ninety days. Notwithstanding the foregoing provisions of this section those provisions of the District of Columbia Traffic Act of 1925, as amended, for the violation of which specific penalties are provided in said Act, as amended, shall be applicable to the United States Capitol Grounds. Prosecutions for violation of such regulations shall be in the Superior Court of the District of Columbia, upon information by the Corporation Counsel of the District of Columbia or any of his assistants.