Editing Xinbeitou branch line (section)

=== Noise complaints ===
Since the line's opening, residents along the line have complained about [[Rail squeal|noise from the trains]] due to the sharp curvature of the tracks and its close distance to apartment buildings on the sides. [[Rail grinding]] and the installation of [[noise barrier]]s did not alleviate the noise by much.<ref>{{cite news |author1=孫惠琪 |title=新北投支線消音 捷局施工改善 解決沿線噪音問題 進行第三階段軌道研磨作業 |agency=[[Central Daily News]] |date=19 November 1997 |location=Taipei |language=zh-tw}}</ref> Shortly after opening, the train's frequency was reduced, the operating hours were shortened to 7&nbsp;am and 9&nbsp;pm, and the number of cars on each train was reduced from six to three.<ref name="trts">{{cite web |title=Starting September 14, the Xinbeitou Branch Line Will Resume Normal Operational Mode with 3-Carriage Train |url=http://www.trtc.com.tw/e/shownews1.asp?id=1430 |website=Taipei Metro |access-date=6 September 2021 |archive-url=https://web.archive.org/web/20081009164816/http://www.trtc.com.tw:80/e/shownews1.asp?id=1430 |archive-date=9 October 2008 |date=12 September 2007}}</ref>

On 14 September 2007, Taipei Metro extended its operating hours to between 6&nbsp;am and midnight.<ref name="trts"/> It was hoped that if the noise standards were deemed to be at an acceptable level that the current [[Zhonghe–Xinlu line|Orange line]] trains on the [[Tamsui–Xinyi line|Red line]] could operate on the Xinbeitou Line instead.<ref name="liberty-b">[http://www.libertytimes.com.tw/2007/new/jul/14/today-taipei2.htm 新北投支線 八月增班正常營運] {{Webarchive|url=https://web.archive.org/web/20110517132727/http://www.libertytimes.com.tw/2007/new/jul/14/today-taipei2.htm |date=17 May 2011 }}, [[The Liberty Times]], 14 July 2007</ref> Trains operate at a maximum headway of one per 7–8 minutes during peak hours.<ref>{{cite web|url=http://english.trtc.com.tw/ct.asp?xItem=1056506&ctNode=27495&mp=122032|title=Xinbeitou Branch Line|publisher=Taipei Rapid Transit Corporation|date=23 December 2009|access-date=16 December 2010|archive-date=2 March 2012|archive-url=https://web.archive.org/web/20120302235437/http://english.trtc.com.tw/ct.asp?xItem=1056506&ctNode=27495&mp=122032|url-status=dead}}</ref>

It has been reported that the line is operating at a loss.<ref name="loss">[https://web.archive.org/web/20100309205416/http://www.xianqiao.net:8080/gb/7/7/13/n1772112.htm 捷运新北投支线　不惜赔钱服务市民], 中广新闻, 13 July 2007</ref> A proposal was put forth in 2005 that a low-speed [[maglev train]] similar to the [[Linimo]] in Japan would solve the problem of noise pollution,<ref name="maglev">[http://www.chinanews.com.cn/news/2005/2005-07-21/26/601993.shtml 台北拟引进日本磁浮电车 最快2007年可亮相], [[China News Service]], 21 July 2005</ref> but its feasibility on operating costs became a subject of ridicule.

In July 2019, the soundproofing walls on the line were updated as part of newly-introduced through-operations to central Taipei.