TÜVASAŞ is responsible for the construction, refurbishment and repair of railcars for the Turkish State Railways (TCDD), of which it is a 100% shareholder,[1] reporting directly to the Turkish Ministry of Transport.

The company was founded in 1951 as Vagon Tamir Atölyesi (Wagon Repair Shop) to repair existing railcars of TCDD's fleet.

[2] Today, TÜVASAŞ has become the largest railcar manufacturer in the Middle East.

TÜVASAŞ and two other rail companies (TÜLOMSAŞ and TÜDEMSAŞ) are in the process of merging under the umbrella of one company, TÜRASAŞ.

The first domestically produced electric trains, the TCDD E44000, are due to be in operation by the end of 2020.