TheDR2800 series is a series ofdiesel multiple unittrains operated by theTaiwan Railways Administration asTze-chiang limited express on non-electrified mainlines. They were originally built byTokyu Car Corporation of Japan in 1982 for theTaiwan Railways Administration to provide better service on the eastern mainline of Taiwan.

DR2800 series
Manufacturer	Tokyu Car Corporation
Entered service	1982-2023
Refurbished	2002-2003
Number built	45 vehicles
Operators	Taiwan Railways Administration
Specifications
Maximum speed	110 km/h (68 mph)
Weight	37 tons (DR2800)/ 35 tons (DR2850)
Prime mover(s)	Cummins NT855-R4 (original) Cummins NTA855-R1(modification)
Transmission	Niigata Tekkō DBSF-110
HVAC	Forced-air ventilation
Bogies	TS-124(power driving car)/TS-125(trailer)
Braking system(s)	SMEE electromagnetic air
Safety system(s)	ATP
Track gauge	1,067 mm (3 ft 6 in)

In early 1980s, theNorth-link line was completed, theYilan line was expanded to double track, and the gauge ofTaitung line was changed to 1067 mm. In response to the demand for air-conditioned express trains in eastern Taiwan,Taiwan Railways Administration ordered 10 sets ofdiesel multiple unit trains fromTokyu Car. These train sets were heavily specialized under license from Budd, and each set consists of 2 power driving cars and a trailer. Each power driving car (designated as DR2800s) was equipped with a Cummins NT855-R4 diesel engine producing 310 horsepower (230 kW) to move the train. The trailer (designated as DR2850s) has a diesel engine to provide head-end power for the entire three-car set. Each power driving car only has a cab at one end and two power driving cars bracket a trailer in a standard set. To prevent dependency on the trailer's engine for cooling, the cooling fans of the driver cars are driven hydraulically instead of electrically. Besides, the DR2800 series is the first series of diesel railcars ofTaiwan Railways Administration equipped with bogies containing air suspension.

The DR2800 series operated asTze-chiang limited express between Taipei and Hualien on June 1, 1982. With a top speed of 110 kilometres per hour (68 mph) and air-conditioning, the demand was so high thatTaiwan Railways Administration ordered another 5 sets (15 cars) in 1984.

The interior was refurbished between 2001 and 2002. The original Cummins NT855R-4 diesel engines were replaced by Cummins NTA855-R1 in 2002 and 2003, and the total output of a set increased to 700 horsepower (520 kW).

DR2800 series mainly operated asTze-chiang limited express on the eastern mainline (includingYilan line,North-link line, andTaitung line) andSouth-link line. In 1991 it even ran on the west line to provide more seats during Chinese New Year. As of February 2025, only one DR2800 series is in service operating as TRA track evaluation train.

• Schultz, Jeffrey T. (June 2018). "Railway island paradise".Trains. Vol. 78, no. 6. pp. 30–37.ISSN 0041-0934.
• Zhaoxu, Su (2014). "DR2800 Diesel Zu-Chiang Express Train".Taiwan Railroad Administration Equipment Encyclopedia (in Chinese) (3rd ed.).ISBN 978-98-65903-4-04.