Why did not work on the improvement of the suburban lines start: Within the scope of the Marmaray Project, Sirkeci-Halkalı, Gebze-Haydarpaşa commuter work on the improvement of the cause of the new minister. The company stopped operations because Transport Minister Lutfi Elvan did not approve the progress of the projects in the period of former Minister Binali Yildirim.
Spanish OHL, Sirkeci-Halkalı, Gebze-Haydarpaşa commuter lines in the project for the improvement of costs, citing the increase of months ago, the work has still not started. Istanbulites patiently waited for the realization of the project, the reason for the crisis, the Minister of Transport Lütfi Elvan, the project did not approve the progression turned out to be. Elvan's attitude in the backstage of Ankara, President Tayyip Erdogan and Prime Minister Ahmet Davutoglu in the clash between the Minister Elvan Davutoglu, and the former Minister Yıldırım close to Erdogan is interpreted as a stop. This tension between the new minister and the former minister is reflected in the projects. The company does not start the work because they cannot get paid for because they are not approved.
On the other hand, it was claimed that the Ministry of Transport was not suspended in the written statement of 2014 in October and the 2015 will end in June.
For the first time, the tender for the upgrading of suburban lines was won by AMD Rail consortium including Doğuş Construction, but the company had applied for international arbitration due to the low price. The second time, the bid was awarded the first 2006 billion 1 million euros in Spanish OHL.