WCVB Channel 5 Boston | NTSB's preliminary report reveals new details of Green Line derailment @WCVB | Uploaded October 2024 | Updated October 2024, 3 hours ago.
An MBTA Green Line trolley was traveling more than three times the speed limit and failed to stop for a signal before this month's derailment, according to a preliminary report released by the National Transportation Safety Board on Wednesday afternoon.

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