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The Massachusetts Bay Transportation Authority (MBTA) yesterday announced it has completed all necessary Red Line signal repairs and restored regularly scheduled service on the line following a June rail-car derailment that caused significant infrastructure damage and service disruptions over the summer.
As of last week, all restoration work was completed with final repairs made to train control signals, track signals and electronic track switching controls.
Over the past three months, MBTA crews also rebuilt four signal bungalows, repaired signals and switches, and installed nearly 20 miles of signal cable, signal control relays and track circuits, MBTA officials said in a press release.
On June 11, a MBTA car derailed at the JFK/UMass Station on the Red Line due to an axle fracture caused by a poor electrical connectivity that led to stray electrical arcing on the surface of the axle. Over time, the arcing weakened the axle, authority officials said.