TCDD UIC-X Fleet

UIC-X
UIC-X coaches at Haydarpaşa station.
In service	Retired or refurbished into modernized coaches.
Manufacturer	TÜVASAŞ
Built at	Adapazarı Plant
Family name	UIC-X
Constructed	1975
Entered service	1975-2010s
Refurbished	2010s
Number built	N/A
Operators	Turkish State Railways
Specifications
Car body construction	Welded steel
Car length	26.4 m (86 ft 7 in)
Width	2.825 m (9 ft 3.2 in)
Height	4.05 m (13 ft 3 in)
Floor height	1.25 m (4 ft 1 in)
Platform height	480 millimetres (19 in) preferred
Entry	Step entry
Doors	Manually opened/closed doors
Maximum speed	120 km/h (75 mph)
Coupling system	Screw and buffer coupling
Track gauge	1,435 mm (4 ft 8+1⁄2 in)

TCDD UIC-X coaches were a type of passenger railcar that the Turkish State Railways operated on most express and regional trains from the 1970s to the early 2000s. These cars were built by TÜVASAŞ at their Adapazarı plant in cooperation with the International Union of Railways (UIC) in order to standardize Turkish railcars with international standards.^[1] Before the TVS2000 became the new standard of the railway, these coaches were the most popular railcar in the country. Beginning in the 2000s, they have been slowly phased out, with a large majority of them being retired or refurbished into modernized railcars, similar to the TVS2000s.