The MBTA announced its planned construction schedule for the first half of 2025, which includes a weekend shut down of the Red Line this month and a full week shutdown in April.

The work will continue the ongoing proactive track maintenance to prevent slow zones recurring. This year, the focus will shift to upgrading other critical infrastructure, including signal systems, improving accessibility across the network, and more.

•On the weekend of Feb. 22 and 23, the Red Line Braintree branch will be shut down from JFK/UMass Station to Braintree Station. Free and accessible shuttle buses will make all stops between JFK/UMass and Braintree. The closure will accommodate signal upgrade work, allowing for more frequent service, improved scheduling, and enhanced safety.

•The Red Line Ashmont branch will be shut down from April 1-9 for proactive rail maintenance work.

•And the Orange Line from Forest Hills to North Station will have a week-long closure from June 21-29 for signal upgrade work.

By upgrading its signals, the MBTA expects to significantly increase operational efficiency, reduce wait times and improve scheduling reliability for all riders.

Green Line collision on Sunday injures 5

A Green Line train crashed into an out-of-service stationary train Sunday morning, sending one passenger and four operators to nearby hospitals. The moving train was carrying five passengers and struck the stationary train at East Somerville Station just before 12:30 a.m. One car on each of the two-car trains derailed, the T said.

“The MBTA apologizes to Green Line customers who are impacted by the disruption in service, following a late night incident involving two trains,” MBTA spokesman Joe Pesaturo said in a statement. He noted that shuttle buses were available between North Station and Medford/Tufts Station “while the NTSB responds and begins its investigation.”

The passenger transported to Mass. General Hospital reported a neck injury. The T said that “all four” Green Line operators were transported to a hospital and were conscious and alert. All four operators were released without being admitted to the hospital by 4 p.m. Sunday.

– STATE HOUSE NEWS SERVICE