Ankara–Istanbul high-speed railway


The Ankara–Istanbul high-speed railway, is a long high-speed railway currently running between Ankara and Halkalı. As of March 2019 most services terminate at Söğütlüçeşme railway station in the Kadıköy district of İstanbul and the fastest journey time between Söğütlüçeşme and Ankara is 4 hours and 15 minutes.

History

Construction on the route is taking place in two phases. The first phase is a, $747 million route between Sincan and İnönü, for which construction began in 2003 on a segment between Esenkent and Eskisehir; this segment was completed in 2007. Regular service between Ankara and Eskisehir began on 13 March 2009. Two shorter lines complete the first phase: a line between Eskisehir and İnönü began construction in 2008 and was completed in 2010, and a line between Sincan and Esenkent was built in 2008.
The second phase, between İnönü and Pendik, is about long, and costs $2.27 billion. The substantially higher price of the second phase is due to more challenging terrain than the first, including 33 bridges and 39 tunnels.
The section between Inonu and Pendik was opened by the prime minister on 25 July 2014, with the service between Istanbul and Ankara taking 3.5 hours. The service started with six departures daily in both directions. The line will continue into central Istanbul when the Marmaray project is completed in approximately 2018. Until the high speed line is fully completed, the high speed trains will use conventional line on some parts of the route (between Sapanca and Alifuatpaşa. The line is planned to be completed fully in 2016, and the total budget is expected to reach 8.8 billion TL.
Construction is partially financed through foreign sources, including €1.25 billion from the European Investment Bank and €120 million from the European Union.
The China Railway Construction Corporation and the China National Machinery Import and Export Corporation won the bid in 2005 to build the railway line in partnership with two Turkish companies, Cengiz Construction and Ibrahim Cecen Ictas Construction. The project was financed in part by a $750 million loan granted to Turkey by China.

Infrastructure, sections and speeds

SectionLengthMax SpeedNotes
Ankara - Sincan24 km140 km/hRebuilt as part of the Başkentray project. Opened on 12 April 2018.
Sincan - Polatlı69 km250 km/hEsenkent-Polatlı section opened on 13 March 2009, while the Sincan-Esenkent section opened on 13 March 2010.
Polatlı - Eskişehir152 km250 km/hOpened on 13 March 2009.
Eskişehir - Vezirhan92 km250 km/hOpened on 25 July 2014.
Vezirhan - Köseköy96 km250 km/hOpened on 25 July 2014, except for the section between Alifuatpaşa and Sapanca which is still under construction and is by-passed with the existing conventional railway line.
Köseköy - Gebze56 km160 km/hOpened on 25 July 2014. Tracks are shared with other trains.
Gebze - Istanbul44 km120 km/hGebze-Pendik section opened on 25 July 2014. The rest of the line is being rebuilt as part of the Marmaray project.

Alcatel won an $80 million contract to supply signalling services on the line, as well as interlockings and control systems, while Thales Group has been contracted to supply an ETCS train control system for the Sincan—Eskisehir portion of the route.