Federal officials say that 39-year-old Robsinson Lalin of Boston was attempting to exit the six-car Red Line train at Broadway Station when his arm was caught in the door. Lalin was dragged about 105 feet and onto the surface below, near the tracks, as the train departed Broadway, the NTSB said.
Massachusetts Bay Transportation Authority's trains are designed with safety features that prevent them from moving when the passenger doors are obstructed, officials said. But in this case, NTSB investigation and testing revealed that the railcar involved had a fault in the local door control system, which enabled the train to move with the door obstructed.
Following the findings, the MBTA initiated a fleet inspection looking for the identified fault in other in-service railcars to prevent a reoccurrence, but say they found no similar faults in other trains.
While the NTSB investigation is still ongoing, they say they've conducted interviews, examined and tested train equipment, reviewed security footage, observed MBTA train operations, and performed sight distance observation. Federal officials say that future investigations will focus on the MBTA passenger train equipment and operating procedures.
In addition to the NTSB and MBTA, the Massachusetts Department of Public Utilities, the Federal Transit Administration, and the Boston Carmen’s Union participated in the investigation.
WBZ's Drew Moholland (@DrewWBZ) reports.