NTSB: 2007 Massachusetts Bay Transit Authority Rail Accident Was Failure to Provide Signal Protection for Track Maintenance Workers
WASHINGTON — The National Transportation Safety Board determined the probable cause of the collision involving a Massachusetts Bay Transit Authority train with a maintenance truck in Woburn, Mass., was the failure of the train dispatcher to maintain blocking that provided signal protection for the track segment occupied by the maintenance-of-way work crew, and the failure of the work crew to apply a shunting device that would have provided redundant signal protection for their track segment. “This tragic accident occurred because several employees of the railroad failed to do a very important part of their job,” NTSB Chairman Mark V. Rosenker