Survey, feasibility study, preliminary design and detailed design of 25 km single track mix use (Passenger + Freight) conventional railway with 80 km/h design speed between Suveren – Gozertepe. The project includes 2 stations, 1 siding station, 7 tunnels with the total length of 6,618.50 m, 7 bridges with the

Survey, feasibility, preliminary design and detailed design of 405.08 km double track mix use conventional railway between Erzincan – Diyarbakir – Mardin provinces. The project includes 166.62 km tunnel (144.1 km NATM Tunnels), 26,298 m bridges/viaducts, 5 stations and 5 siding stations, 3,047.09 m boring, 810 km² topographical survey, engineering

Survey, feasibility, preliminary and detailed design, feasibility and engineering services of 339.35 km double-track high-speed railway line with 250 km/h operation speed. Minimum curvature radius is 3,500m, and maximum vertical slope is 1.6%. The project includes 9 stations, 453 culverts, 168 underpasses, 31 overpasses, 65 bridges and viaducts with a

Survey, feasibility, preliminary and detailed design, and engineering services of 654.74 km double-track highspeed railway line with 250 km/h operation speed. Minimum curvature radius is 3,500 m, and maximum vertical slope is 1.6 %. The project includes 10 stations, 840 culverts, 368 underpasses, 73 overpasses, 188 bridges and viaducts with

Survey, feasibility, preliminary and detailed design, and engineering services of 158.78 km double-track mix use conventional railway with 90 km/h operation speed. Minimum curvature radius is 3,500 m, and maximum vertical slope is 2.5% The project includes 3 stations, 251 culverts, 98 underpasses, 17 overpass, 82 bridges and viaducts with

Survey, feasibility, preliminary and detailed design and engineering services of 158.78 km double-track high-speed railway line with 250 km/h operation speed. Minimum curvature radius is 3,500 m, and maximum vertical slope is 1.6%. The project includes 3 stations, 146 culverts, 58 underpasses, 16 overpasses, 12 bridges and viaducts with the

Survey, feasibility, preliminary and detailed design, and engineering services of 150 km double-track highspeed railway line with 250 km/h operation speed. Minimum curvature radius is 3,500 m, and maximum vertical slope is 1.6%. The project includes 3 stations, 156 culverts, 86 underpasses, 8 overpasses, 36 bridges and viaducts with a

Survey, Feasibility, Preliminary and Detailed Design and Engineering Services of 300 km double-track highspeed railway line with 250 km/h operation speed. Minimum curvature radius is 3,500 m, and maximum vertical slope is 1.6%. The project includes 4 stations, 336 culverts, 48 underpasses, 37 overpasses, 140 bridges and viaducts with the