It is a high-speed train line between Ankara and Istanbul, where the Ankara-Eskişehir stage is completed. 523 Km. even the voyage is expected to take 3 hours. Even the high-speed train 250 that will run will move at a speed of Km / h. The arrival date of the high speed train to Istanbul is planned as 29 October 2013. The same day, the opening of Marmaray is planned.
Construction of the next line for Eskişehir via Istanbula is continuing rapidly and the railway traffic between Gebze-Köseköy and Köseköy-Arifiye has been closed and rail dismantling has started. Therefore, all intercity passenger and freight trains departing from Haydarpaşa have been canceled and only Haydarpaşa - Gebze commuter line is in operation.