Türkiye Vagon Sanayisi Anonim Şirketi, or with its abbreviation TÜVASAŞ, is a semi-private wagon manufacturer joint-stock company based in Adapazarı, a subsidiary of TCDD. Responsible for the manufacture, repair and maintenance of TCDD rail vehicles and their parts.
TÜVASAŞ currently has 5 factories.
Manufacturing Factory: The Manufacturing Plant is the main production unit where rail buses, electric series, light rail vehicles and diesel train sets are manufactured, as well as various types of passenger wagons. It has an annual production capacity of 65 wagons.
Repair Factory: The Repair Factory is the unit where the repair and modernization of rail vehicles is carried out. It has an annual repair capacity of 500 wagons and passenger vehicles. Engine, brake, air conditioning repairs, wooden flooring, water-sofajing operations of vehicles are carried out.
Chemical Works Factory: It is a production unit where rail vehicles manufactured and repaired are painted, primed, sandblasted and surface cleaned and sound insulation flooring is made.
Electric-Electronic Factory: The assembly, wiring, maintenance and tests of the electrical and electronic systems of rail vehicles undergoing other processes are carried out in this factory.
Bogie Factory: This factory is a production unit that manufactures and repairs bogie, axle and hydrodynamic gearboxes and gearboxes of vehicles used in rail passenger transportation.