Arlington Advocate: Green Line petition Post published:June 11, 2008 Post category:Green Line “Next stop, Arlington?” The petition to extend the Green Line to Route 16 is getting good participation in Arlington. You Might Also Like Arlington Advocate: Green Line supported April 2, 2008 Boston Globe: Missed Green Line deadlines January 11, 2009 Video of the Green Line opening ceremony December 15, 2022