Tamsui–Xinyi line
The Tamsui–Xinyi Line (code R) is a metro line in Taipei operated by Taipei Metro, named after the districts it connects: Tamsui and Xinyi. It includes a total of 28 stations serving Tamsui, Beitou, Shilin, Datong, Zhongshan, Zhongzheng, Daan, and Xinyi districts. At , it is currently the longest line of the Taipei Metro. The Tamsui section runs mostly along the former Tamsui railway line. There, most of the tracks and stations have been renovated, except in the Zhongzheng district, where a new tunnel was constructed due to a lack of surface right-of-way. The Red line is a high-capacity metro system. The route and stations between and including  and  are underground; the routes and stations between and including  and  are elevated;  station is elevated; the route and stations between and including  and  are ground level; and  station is elevated. History 

For 15 years, trains operated between  and  via the southern part of the current , making it the longest-serving former service of the system, followed closely by a 13 year service from  to  via the southern part of the current . With the completion of  station, Xinyi Line, and Songshan Line, both services ended, placing the current form of the Tamsui–Xinyi line into effect. July 1988: Tamsui Line begins construction. 28 March 1997: Tamsui Line begins service from Tamsui to . 25 December 1997: The section from  to Taipei Main Station begins service. 24 December 1998: The section from Taipei Main Station to  begins service. The section of Chiang Kai-shek Memorial Hall and  on the Xindian line opened along with the Zhonghe line allowing trains from Tamsui to travel to Nanshijiao. 11 November 1999: The rest of the Xindian Line opened. Trains from Tamsui traveled to Xindian and the Zhonghe Line route was cut back to . 1 November 2002: Ground broken on Xinyi Line construction. 12 February 2010: Corridor approved by the Executive Yuan for the Xinyi line eastern extension. 15 July 2010: The last section of shield tunneling is completed, marking the completion of tunnel construction. 29 September 2012: With the opening of  the last trains between Beitou and Nanshijiao were launched ending the through services; trains now operate between Nanshijiao and  or . A new shuttle service from Beitou to  was added temporarily until the Xinyi Line opened. 15 October 2013: The line completed its preliminary inspection. 23 November 2013: With the opening of the Xinyi line, the last trains of the Beitou-Taipower Building shuttle service were launched; trains operated between Beitou and  and between Taipower Building and  via the Xiaonanmen line. 24 November 2013: The section between Chiang Kai-shek Memorial Hall and Xiangshan opened and began revenue service. 14 November 2014: With the opening of the Songshan line, the last trains between Tamsui and Xindian were launched at 12:00 November 15, 2014 ending the through services; trains now operate between Xindian or Taipower Building and  and between Tamsui or Beitou and Daan or Xiangshan. Services 

As of December 2017, the typical off-peak service is:
 8 trains an hour (tph) between  and 
 7 tph between  and

Stations 
 M - Main line
 B - Branch Line

See also 
 Xinbeitou branch line

Notes

References 

1997 establishments in Taiwan
Railway lines opened in 1997
Taipei Metro
750 V DC railway electrification