In September 2013, the state announced plans to run diesel multiple unit (DMU) service between Back Bay and the Boston Convention and Exhibition Center on Track 61 beginning in 2015. In 2014, the MBTA announce it would purchase DMU self-propelled rail cars for the Fairmount Line with eventual expansion to five other lines, including Track 61, to be known as the Indigo Line. The planned DMU procurement was canceled in 2015. A new West Station, is planned to be built on the Framingham-Worcester line in the Beacon Park Yard site, where it may also connect to North Station via the Grand Junction Railroad.