Open invitation to tender, revised deadline 28.02.2011, for design, execution and completion of 77 km-long Gebze-Halkali commuter rail upgrading as Contract CR3 of Marmaray project including equipping new Bosphorus tunnel. Contract starts April, 2011 for phased completion end-2013 to end-2014. Pre-bid meeting 15.09.2010. More from Ministry of Transportation, DLH in Ankara, tel +90 312203-1638, fax -1470, e-mail hamzasen@ubak.gov.tr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=368672-2010. 50/10.