The turn-key project is to perform the complete construction of the 206 km double track (total length as single track is 412 km) high speed railway (250 km/hr) between Ankara and Eskisehir which is the 1st stage of the Ankara- Istanbul High Speed Railway Project. The project includes design works, infrastructure works, track works, electrification works, signaling and telecom works of the high speed railway, and relocation of the existing railway and its utilities at the locations where they coincide with the high speed railway in order to ensure the independent operation of the two. Construction works include 483 m length NATM tunnel, 180m length cut- cover tunnel, viaducts, bridges, underpasses, overpasses and stations.