Be it enacted by the Senate and House of Representatives
in General Court assembled, and by the authority of the same,
SECTION 1. The metropolitan district commission is hereby authorized and directed to prohibit the use of motor vehicles on Charles W. Greenough boulevard between Arsenal street and North Beacon street in the city known as the town of Watertown from the hours of eleven o'clock ante meridiem to seven o'clock post meridiem on Sundays from the last Sunday in April through the second Sunday in November.
SECTION 2. The metropolitan district commission is hereby authorized, upon receipt of a request, from the town council of the city known as the town of Watertown, to suspend on any given Sunday the prohibitions set forth in section one of the use of motor vehicles on said Charles W. Greenough boulevard.
SECTION 3. Notwithstanding the provisions of sections one and two, the metropolitan district commission may, at its discretion, suspend any authorized closings if, in the judgement of said commission, any such authorized closing poses a threat to public safety or if an emergency arises in which said commission, in its judgement, deems it necessary to alter the authorized closing.