Governor Maura Healey has signed an executive order placing an immediate ban on non-essential motor vehicle travel in three Massachusetts counties because the raging blizzard was causing treacherous road conditions.
The ban impacts travel in Bristol, Plymouth, and Barnstable, and Duke counties, where hundreds of thousands were without power.Hurricane-forced wind gusts were downing trees and power lines amid the whiteout, leaving roads impassable.
The speed limit on the Massachusetts Turnpike has also been reduced to 40 miles per hour…