How Red Line Track Defects Prompted Last Week’s Systemwide Slowdown on the T

On March 7, the state office in charge of overseeing safety on the T’s subways demanded “a daily report” of track problems that require immediate repair, plus details on any repair work that the T had done to address those defects. Two days later, MBTA officials imposed a global 25 mph speed limit on subways after they found they could not comply with that order.