Boston Green Line Crews Restore Service After Signal Issue

Signal malfunction at Medford/Tufts station caused 15-minute delays on Green Line Extension

Green Line Signal Problem Delays Boston Riders

Boston's Green Line Extension experienced 15-minute delays on December 28 after a signal problem at Medford/Tufts station disrupted service, the MBTA said. Trains stood by at stations along the line while crews worked to resolve the technical issue. Officials didn't specify how many trains or passengers were affected by the disruption.

Extension Line Faces Ongoing Technical Challenges

The Medford/Tufts station opened in March 2022 as part of the Green Line Extension project, according to MBTA records. The extension has experienced various technical issues during its first years of operation. The MBTA operates under Federal Transit Administration safety oversight, with signal system reliability among the issues being addressed. Transit agencies typically experience adjustment periods with new infrastructure as systems are tested under real-world conditions.

Service Continued During Signal Malfunction

The MBTA communicated the service disruption through its alert system on December 28. Trains continued operating during the incident, making stops as needed to manage the situation safely, officials said. The agency didn't provide specific details about the nature of the signal malfunction or what caused the technical problem. Officials resolved the issue the same day, though exact timing for when service returned to normal wasn't available.

Resolution Completed Same Day as Incident

Crews resolved the signal problem on December 28, restoring normal service to the Green Line Extension. The MBTA didn't release information about whether any repairs or equipment replacements were needed. Officials haven't said whether the incident will require follow-up maintenance work at the Medford/Tufts station.

Riders Can Track Service Through Real-Time Updates

Commuters experienced extended travel times during the December 28 incident, though specific passenger impact numbers weren't released. The MBTA communicates service disruptions through social media and its alert system to keep riders informed of delays. Moovit provides real-time updates for MBTA Green Line service, helping riders plan around disruptions and track train arrivals.