M2 Yenikapı - Hacıosman metro line (Turkish: M2 Yenikapı - Hacıosman metro hattı), is a rapid transit line of the Istanbul Metro. It is colored light green on the maps and route signs. The M2 operates between Hacıosman in southern Sarıyer to Yenikapı in south-central Fatih on the historic peninsula of Istanbul. Shuttle trains run from Sanayi to Seyrantepe to Türk Telekom Arena.