If you see an MBTA train at a station near you with a conductor opening the doors, don’t be alarmed — and don’t hop on.

A track maintenance vehicle derailed between Government Center and Park Street causing service disruptions, officials say.

Shuttle buses briefly replaced service on part of the Green Line on Thursday morning after a maintenance vehicle derailed overnight in downtown Boston, officials said. A vehicle used for track ...

Trains were suspended on the Green Line between Copley and Haymarket stations Thursday morning after a track maintenance vehicle derailed overnight at Government Center, officials said.