Green Line test trains are running! Post published:December 4, 2021 Post category:Green Line Here’s a test run into the new Union Square station. The Green Line is coming soon! You Might Also Like GREEN LINE OPENS! Official ceremony at Lechmere March 21, 2022 MBTA seeking bids for Green Line work July 17, 2012 Editorial: “We’ve already paid for the GLX” January 28, 2016