Governer Deval Patrick has declared a State of Emergency. All road travel is banned starting at 4 PM. This is a statewide ban and is in effect until lifted. Violation of this ban can result in penalties of up to one year in prison.
Roads are already getting slick. If you need to go somewhere, do it now and get where you can stay for the duration of the storm. As the day progresses, road conditions will be getting markedly worse possibly being impassable. Staying off the roads will allow first responders and snow clearing crews to respond to the storm.