When hundreds of new Red Line cars are shipped from Springfield to Boston, they will be commissioned using the recently completed $22 million Red Line Test Track and Vehicle Testing Facility, built as part of the Red Line Transformation Program. The dedicated track and facility will give the MBTA flexibility and control over the testing process and will allow a faster rollout of the new fleet.  The new test track and testing facility will soon be used to commission the first production vehicles before the end of the Winter and an increase of deliveries is expected throughout 2022. At the same time, deliveries continue for Orange Line trains.  The new test track is adjacent to Cabot Yard (near Broadway Station), allowing easy access for vehicle deliveries and testing without interfering with regular maintenance or competing for access on the mainline with regular service.

Aerial view of the completed Red Line Test Track and Vehicle Testing Facility

-via Press Release