The CR1 Contract (Gebze-Haydarpaşa, Sirkeci-Halkalı Commuter Rail Upgrading: Civil & Electrical & Mechanical Systems) of the Marmaray project which is one of the major and prestigious projects in Turkey and which amounts at 815 million Euro is undersigned on 28.03.2007 between the Alstom-Marubeni-Doğuş (A.M.D.) Consortium and the General Directorate of Railways, Harbours and Airports Construction (DLH).