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 A graphic that says it all October 29, 2015 EPA approves revised SIP transit commitments August 1, 2008 Green Line preliminary engineering and design contract: $24.5 million August 1, 2010