Attiko Metro receives bids for Line 4 Section A August 15, 2017 | Europe Company News Attiko Metro has received bids from four consortia to construct and equip the 13-km Section A of the planned Athens Metro Line 4. The four consortia include GEK Terna, Vinci and Siemens conso... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password