General Rule: The ODD/EVEN side parking switches each year based on the date as follows: Beginning December 1, 2008 to April 1, 2009, overnight parking is allowed on one side of the street (odd or even) from 12:00 AM to 7:00 AM. Example: If the winter begins in an even year then parking is allowed on the even numbered side of the street only.

This year - on-street parking is permitted only on the EVEN NUMBERED SIDE of the street from 12:00 AM to 7:00 AM, seven days a week (unless posted otherwise - see below):

• First violation on this is a $10 fine.
• NOTE: During a declared snow emergency the above rule will be in effect 24 hours a day until the snow emergency is lifted. Violators will face a $25 fine in addition to tow fee as regulated by Department of Telecommunications and Energy.

• Exception # 1: On streets where parking is permitted on one side only, parking will be allowed on that side regardless of it being odd or even.
• Exception #2:  No Commercially registered motor vehicles (any vehicle w/o passenger plate registrations), Commercially lettered motor vehicles, vehicles with trailers and/or Oversize vehicles may park overnight from 12 - 7 am on city streets. This is in effect year round. 365 days. Violation of City Commercial Motor Vehicle Ordinance. Violators will face a $25 fine. This is a year-round violation.
• Exception #3: Snow Emergency Regulations: "Emergency Arteries" when it is determined that parked vehicles may impede the plowing or removing of snow or ice and impair the free flow of traffic, a snow emergency will be declared by the Commissioner of Public Works. During a declared Snow Emergency, there shall be no parking on either side of duly posted streets. Violators will face a $25 fine in addition to a tow fee.
• Impeding Snow Removal/Emergency Vehicles: Under pertinent laws – No vehicle may park on any City Street or Private Way in such a manner that it’ll impede or prevent the passage of Emergency Vehicles and Snow removal vehicles. Emergency Vehicles and Snow removal vehicles need a minimum of 12 feet
   

During declared snow emergencies, on the designated streets cars can be ticketed and towed. The following streets are designated as Emergency Arteries:

Boston Avenue, Central Avenue, College Avenue from George Street to Boston Avenue, Forest Street, Fulton Street, George Street, Governors Avenue, Grove Street, Hancock Street, Harvard Avenue, Harvard Street, High Street, Lawrence Road, Main Street, Medford Street, Mystic Avenue from Main Street to Crescent Street, Playstead Road, Riverside Avenue, Salem Street, Spring Street, Washington Street, Webster Street, Willis Avenue, Winthrop Street and Woburn Street.

• Those residents who have driveways, garages, or other off-street parking facility are not allowed to park on the street for a period of time longer than one hour between 12 a.m. to 7 a.m. and could face a fine of $15.

Other Pertinent Laws: Any motor vehicle parked on a public way for a period of 48 consecutive hours without being moved is subject to towing and a $20 fine.