mbta April 18, 2019 7:06 am Pedestrian Fatally Hit by MBTA Bus in Chelsea, Mass. Authorities are investigating a fatal pedestrian crash that involved an MBTA bus. US & World Videos 2:40 Cambridge bans right turns on red lights 2:23 Friend of John O'Keefe testifies in Karen Read trial 1:57 Tensions escalate as protests across Mass. colleges continue 2:05 MIT students suspended amid pro-Palestinian protests 0:21 Man arrested in Centerville stabbing that sent victim to hospital