The capital reaches its suburbs: Sincan-Kayaş Line suburban flights were terminated on August 1, 2011 due to the Ankara Metropolitan Municipality's New Çiftlik Boulevard construction and Başkentray Project.
Later on, TCDD held the Başkentray Project tender, which included the reconstruction of the Sincan-Ankara-Kayaş train lines, on April 25, 2012. During the 2 years that passed, the project could not be put into practice due to objections to the tender and legal processes. Finally, in May, the Public Procurement Authority decided to cancel the tender for the Başkentray Project.
Taking into account the inability to perform suburban flights in Ankara for nearly 2 years, TCDD brought the train sets that were wasted by the construction of Pendik-Söğütlüçeşme suburban lines and stations to commence the construction of the Pendik-Söğütlüçeşme suburban lines and stations to Ankara by rail. .
The existing suburban sets and the additional sets brought from Istanbul will carry Ankara residents on the Sincan-Kayaş Line as of July 29.