Boston December 28, 2017 12:20 pm MBTA Riders Deal With Extreme Cold The Massachusetts Bay Transportation Authority took several steps to make sure their subway cars and commuter rail trains could withstand the bitter cold, including storing as many trains as possible in tunnels. US & World Videos 1:00 Three dead in apparent murder-suicide in Lowell 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 2:50 Community mourns Billerica police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students'