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Mechanical problems caused delays on several MBTA lines

Passengers wait at the Ashmont T Stop during the morning commute after a mechanical problem on a Red Line train at the Kendall Square station in Cambridge triggered 15-minute delays on the Ashmont branch.Jonathan Wiggs/Globe Staff

Red. Orange. Green.

Passengers on three MBTA subway lines faced delays during the Tuesday morning commute for the same reason: A “mechanical problem” with trains on each of those lines took place between 6:53 a.m. and 10:37 a.m. according to T tweets.

The first problem occurred on the Red line.

A Red Line train at the Kendall Square station in Cambridge triggered 15-minute delays on the Ashmont branch that connects Dorchester to downtown Boston. The T posted an alert about the delays around 6:53 a.m. and reported regular service resumed around 7:24 a.m.

According to T spokesman Joseph Pesaturo, the train servicing the Ashmont branch was taken out of service at the Kendall Station. “The train started experiencing performance issues and it was taken out of service at Kendall Station where riders exited onto the platform,’’ he wrote in an e-mail. “Riders boarded the next train.”


T personnel will determine what caused the mechanical problem, he wrote.

The Red Line train that broke down was an “older train,’' according to Pesaturo. The T has ordered 252 new Red Line cars and 12 have been delivered, according to Pesaturo. All 252 trains are due to be delivered by summer 2025, he said.

The second delay was on the Orange Line.

Northbound service on the Orange Line was delayed when a train became disabled near the Community College station in Charlestown, the T tweeted about the Orange Line delays around 10:04 a.m.

“Delays of up to 15 minutes northbound due to a train with an earlier mechanical problem approaching Community College,’’ the T tweeted. “The train has been taken out of service.”

It was not immediately known if the malfunctioning vehicle was one of the older trains operating on the line or one of the new vehicles being supplied by CRRC.The entire Orange Line is set to close Friday night so extensive repairs can be done over the following 30 days. Officials have said the Orange Line fleet will be almost all new trains when service resumes.


Governor Charlie Baker and officials warned Monday that the shutdown will cause slower commutes on the highways and on the T as a whole during the month-long effort.

Regular service resumed at 10:34 a.m.

The third incident was reported on the Green Line.

A mechanical problem occurred on a train at the Arlington Station in downtown Boston.

Regular service resumed at 10:55 a.m., the T said.

John R. Ellement can be reached at Follow him @JREbosglobe.