Most Massachusetts public schools were closed today and the parking ban and snow emergency remained in effect in Boston as clean-up efforts continue after the weekend’s storm.

Gov. Deval Patrick declared a statewide emergency declaration at noon on Friday and ordered non-essential vehicles off the road by 3:30 p.m. that day. State offices opened for business today.

More than 110,000 customers remained without power mostly on the South Shore and Cape Cod, thanks to a blizzard that dropped up to 3 feet of snow on same places.

Boston Mayor Thomas M. Menino said in a statement that today’s efforts would focus largely on clearing residential side streets. The city’s Office of Emergency Management and Department of Public Works are coordinating with the Massachusetts Emergency Management Agency and private contractors to secure additional equipment to clear residential streets and have so far secured 40 additional pieces. MassDOT, Massport and the Boston Convention and Exposition Center have also lent equipment to the city.

State officials urged commuters to take public transportation when possible. The MBTA’s regularly scheduled service resumed today, but some trolley and commuter rail lines were experiencing 15- to 20-minute delays due to signal problems and weather-related issues. While a snow emergency is in effect, parking is prohibited on all major arteries in Boston.