Editing Pyongyang Metro (section)

==Construction==

Construction of the metro network started in 1965, and stations were opened between 1969 and 1972 by Supreme Leader [[Kim Il Sung]].<ref>{{cite web|url=http://cafe306.daum.net/_c21_/bbs_search_read?grpid=3LY&fldid=ANo&contentval=002VYzzzzzzzzzzzzzzzzzzzzzzzzz&nenc=&fenc=&q=&nil_profile=cafetop&nil_menu=sch_updw|script-title=ko:철도동호회 - 조선국 평양지하철도|script-work=ko:Daum 카페|access-date=22 December 2011|archive-date=10 July 2012|archive-url=https://archive.today/20120710184552/http://cafe306.daum.net/_c21_/bbs_search_read?grpid=3LY&fldid=ANo&contentval=002VYzzzzzzzzzzzzzzzzzzzzzzzzz&nenc=&fenc=&q=&nil_profile=cafetop&nil_menu=sch_updw|url-status=live|language=ko}}</ref> Most of the 16 public stations were built in the 1970s, except for the two most grandiose stations—Puhŭng and Yŏnggwang, which were constructed in 1987. According to [[NK News]] sources, a construction accident in 1971 killed tens if not hundreds of laborers, forcing the rerouting of the metro to not cross the [[Taedong River]].<ref name=":5" />

China provided technical aid for the metro's construction, sending experts to install equipment made in China, including [[electrical equipment]] made in [[Xiangtan]], [[Hunan]]<ref>{{cite web|script-title=zh:湘潭电机股份有限公司地铁产品|url=http://www.xemc.com.cn/xemc/dj/Pages.aspx?channel=426|website=Xiangtan Electric Manufacturing Company Limited|access-date=15 February 2016|archive-date=23 February 2016|archive-url=https://web.archive.org/web/20160223043106/http://www.xemc.com.cn/xemc/dj/Pages.aspx?channel=426|url-status=live|language=zh}}</ref> and the escalator with vertical height of 64 m made by Shanghai Seleva.<ref>{{cite news|last1=罗菁|script-title=zh:申城38年援建国外198个成套项目 平壤地铁电梯为沪产|url=http://sh.eastday.com/m/20141031/u1a8419670.html|access-date=15 February 2016|agency=东方网|date=31 October 2014|archive-date=1 March 2016|archive-url=https://web.archive.org/web/20160301211111/http://sh.eastday.com/m/20141031/u1a8419670.html|url-status=live|language=zh}}</ref><ref name="JilinShengzhipp444–445">{{cite book|last1=李永林主编|year=1995 |script-title=zh:《吉林省志·卷三十三·对外经贸志》|isbn=7206022952|pages=444–445|publisher=吉林人民出版社 |language=zh}}</ref>

The Pyongyang Metro is among the deepest metros in the world, with the track at over {{convert|110|m|ft}} deep underground; the metro does not have any above-ground track segments or stations. Due to the depth of the metro and the lack of outside segments, its stations can double as [[bomb shelter]]s, with blast doors in place at hallways.<ref>{{Cite web | title = I was part of the first group of outsiders allowed to ride the entire North Korean subway system — here's what I saw | last = Davies | first = Elliott | work = Business Insider | date = 16 April 2016 | access-date = 17 April 2016 | url = https://www.businessinsider.com/north-korea-metro-photos-2016-4?op=1 | archive-date = 19 September 2020 | archive-url = https://web.archive.org/web/20200919192535/https://www.businessinsider.com/north-korea-metro-photos-2016-4?r=UK | url-status = live }}</ref><ref>{{cite web|url=http://news.163.com/07/0731/09/3KNIJS0O00011SM9_2.html|script-title=zh:平壤的表情：你不知道的朝鲜|language=zh|publisher=[[Netease]]|date=July 31, 2007|access-date=15 August 2007|archive-date=19 May 2011|archive-url=https://web.archive.org/web/20110519102718/http://news.163.com/07/0731/09/3KNIJS0O00011SM9_2.html|url-status=live}}</ref> It takes three and a half minutes from the ground to the platform by escalator. The metro is so deep that the temperature of the platform maintains a constant {{convert|18|C|F}} all year.<ref>{{cite news|last1=任力波|script-title=zh:平壤地铁 站台内常年保持18摄氏度恒温|url=http://news.xinhuanet.com/photo/2005-02/17/content_2587767_1.htm|access-date=15 February 2016|agency=Xinhua|date=17 February 2005|archive-date=23 February 2016|archive-url=https://web.archive.org/web/20160223041646/http://news.xinhuanet.com/photo/2005-02/17/content_2587767_1.htm|url-status=dead|language=zh}}</ref> The [[Saint Petersburg Metro]] also claims to be the deepest, based on the average depth of all its stations. The [[Hongyancun station]] on [[Chongqing Rail Transit]]'s [[Line 9 (Chongqing Rail Transit)|Line 9]] is currently the deepest station in the world at {{convert|116|m|ft}}. The deepest heavy rail station in the world is the [[Jerusalem–Yitzhak Navon railway station]], located {{cvt|80|m}} underground. The [[Porta Alpina]] railway station, located above the [[Gotthard Base Tunnel]] in Switzerland, was supposed to be {{cvt|800|m}} underground, but the project was indefinitely shelved in 2012.<ref>{{cite web|url=http://news.discovery.com/tech/worlds-largest-tunnel-drilled-under-swiss-alps.htm|title=World's Longest Tunnel Drilled Under Swiss Alps|work=DNews|access-date=26 December 2013|archive-date=17 February 2014|archive-url=https://web.archive.org/web/20140217113453/http://news.discovery.com/tech/worlds-largest-tunnel-drilled-under-swiss-alps.htm|url-status=live}}</ref>

The system was initially electrified at [[Railway electrification system|825 volts]], but lowered down to 750 volts to support operation of the Class GI sets.<ref name=":1" /> However, this conflicted with the documentation on the DK4 sets, which uses 750 volts with a +20% and a -38% tolerance.<ref>{{Cite journal|title=DK4型地下铁道电动客车 (上)|trans-title=DK4 metro set (part 1)|journal=铁道车辆|volume=1982/8|pages=42}}</ref>

A 1999 [[Korean Broadcasting System|KBS]] news broadcast stated that two lines were under construction, with line 3 to run from Kwangbok station to Mangyongdae, while the location of line 4 was unknown. The two lines were to open for the 55th [[Party Foundation Day]].<ref name=":9">{{Cite web|title=평양 지하철 증설공사|url=https://mn.kbs.co.kr/mobile/news/view.do?ncd=3800956|access-date=2021-10-26|website=KBS 뉴스|language=ko}}</ref>

In 2012, [[Korean Central Television]] released renders of a new station bearing the name [[Mangyongdae-guyok|Mangyongdae]] displayed at the Pyongyang Architectural Festival.<ref>{{Cite web|title=Pyongyang — Underground — New stations|url=https://transphoto.org/articles/6035/|access-date=2020-10-13|website=transphoto.org}}</ref>

In 2018, NK News claimed that there would be possible extensions to the metro system, with anonymous sources claiming activity to the west of [[Kwangbok Station]]. Commercial satellite imagery revealed only one structure under construction, and it speculated an absence of announcements from state media was due to funding issues, as well as due to the 1970s tunneling accidents.<ref name=":5">{{cite news|work=NK News|archive-date=December 11, 2019|archive-url=https://web.archive.org/web/20191211163259/https://www.nknews.org/2018/04/north-korea-extending-pyongyang-metro-system-sources-say/|url=https://www.nknews.org/2018/04/north-korea-extending-pyongyang-metro-system-sources-say/|date=April 25, 2018|title=North Korea extending Pyongyang metro system, sources say|last=O'Carroll|first=Chad}}</ref>

In 2019, [[Kaeson station]] and [[Moranbong Station|Moranbong station]] were modernised,<ref>{{Cite web |title=Pyongyang Metro stations undergo renovation |url=http://www.pyongyangtimes.com.kp/?bbs=34969 |url-status=deviated |archive-url=https://web.archive.org/web/20210208144902/http://www.pyongyangtimes.com.kp/?bbs=34969 |archive-date=8 February 2021}}</ref> adding TVs that show the next service and brighter lighting. This was followed by [[Jonu station]] and [[Chonsung station]] in 2020.<ref>{{Cite web|title=Underground Pyongyang Is Getting Young|url=https://kcnawatch.org/newstream/|access-date=2020-07-08|website=KCNA Watch|language=en-US|archive-date=9 July 2020|archive-url=https://web.archive.org/web/20200709105236/https://kcnawatch.org/newstream/|url-status=live}}</ref> The TVs can also display a digital version of the [[Rodong Sinmun]].

At the [[8th Congress of the Workers' Party of Korea]], it was announced to push forward on the updating and renovation of the Pyongyang Metro, along with the production of new-type subway trains.<ref>{{Cite web|title=Great programme for struggle leading Korean-style socialist construction to fresh victory: On report made by Supreme Leader Kim Jong Un at Eighth Congress of WPK|agency=KCNA|url=http://www.pyongyangtimes.com.kp/?bbs=36889|access-date=2021-01-14|website=The Pyongyang Times|archive-date=10 January 2021|archive-url=https://web.archive.org/web/20210110144826/http://www.pyongyangtimes.com.kp/?bbs=36889|url-status=dead}}</ref>