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This page presents a list of the longest continuous underground rapid transit tunnel sections of the world, excluding branches from the longest tunnel (branch lines that used to transport passengers should be included).

Note: This article only lists tunnels that are 15 km (6.2 miles) or longer.

World's longest subway tunnel sections in use

Name System Country Stations Length in km (mi) Year of
completion
Lines 3-11 Suzhou Metro  China Line 3 and Line 11 are connected at Weiting Station with through trains passing by. 86.54 km (53.77 mi) 2019–2023
Line 6 Chengdu Metro  China Wangcong Temple – Lanjiagou 68.2 (42.4)[1] 2020
Line 19 Chengdu Metro  China Huangshi to Tianfu 67 km (42 mi) 2020–2023
Line 1 Qingdao Metro  China Dongguozhuang to Wangjiagang 59.82 km (37.17 mi) 2020–2021
Line 18 Guangzhou Metro  China Xiancun[2] to Wanqingsha 58.3 (36.2)[2] 2021
Line 3 Guangzhou Metro  China Airport North – Panyu Square 57.93 (36) 2005–2018
Bolshaya Koltsevaya line Moscow Metro  Russia Circle route 57.54 km (35.75 mi)[3][4]
(excluding Moscow-City branch) 		2018–2023[5]
Line 10 Beijing Subway  China Circle route 57.1 (35.5) 2008–2013
Line 6 Beijing Subway  China Jin'anqiao – Lucheng 53.4 (33.2) 2012–2018
Seoul Subway Line 5
(longest branch) 		Seoul Subway  South Korea Banghwa–Hanam Geomdansan 51.7 km (32.1 mi) 1995–2021
M11 Istanbul Metro  Turkey Gayrettepe – Arnavutköy Hastane 51.5 (32) 2023–2024
Line 2 Wuhan Metro  China Julong Boulevard - Fozuling 50.347 (27.556) 2012–2019
Arbatsko-Pokrovskaya line Moscow Metro  Russia Pyatnitskoye Shosse – Shchyolkovskaya 45.1 (28.0) 1938–2012
Sokolnicheskaya line Moscow Metro  Russia Kommunarka – Bulvar Rokossovskogo 44.5 (27.7) 1935–2019
Lyublinsko-Dmitrovskaya line Moscow Metro  Russia Zyablikovo – Fiztekh 44.3 (27.5) 1995–2023
Zamoskvoretskaya line Moscow Metro  Russia Khovrino – Alma-Atinskaya 42.8 (26.6) 1938–2018
Line 8 Beijing Subway  China Yuzhi Lu – Wufutang 42.6 (26.4) 2012–2021
Line 15 Shanghai Metro  China Gucun Park – Zizhu Hi-tech Park 42.3 (26.3) 2021
Line 5 Chengdu Metro  China Jiudaoyan – Huilong 42.3 (26.3) 2019
Tagansko-Krasnopresnenskaya line Moscow Metro  Russia Planernaya – Kotelniki 42.2 (26.2) 1966–2015
Line 14 Beijing Subway  China Dawayao – Shangezhuang 42 (26) 2015–2021
Line 6 Tianjin Metro  China Nanhezhuang – Lushuidao 42 (26) 2016–2021
Downtown MRT line Mass Rapid Transit (Singapore)  Singapore Bukit Panjang – Expo 41.9 (26)[6] 2013–2017
Line 3 Nanjing Metro  China Xinghuolu – Mozhoudonglu 41.5 (25.8) 2015
Line 4 Suzhou Metro  China Longdaobang — Tongli 41.5 (25.8) 2017
Serpukhovsko-Timiryazevskaya line Moscow Metro  Russia Altufyevo – Bulvar Dmitriya Donskogo 41.2 (25.6) 1983–2002
L-12 (Metro Sur) Madrid Metro  Spain Circle route 40.96 (25.5) 2003
Toei Oedo Line [citation needed] Toei Subway  Japan Hikarigaoka – Shiodome – Tocho-mae 40.7 (25.3) 2000
Seoul Subway Line 9 Seoul Subway  South Korea Gimpo Airport – VHS Medical Center 40.6 (25.2) 2018
Line 12 Shanghai Metro  China Qixin Road – Jinhai Road 40.4 (25.1) 2015
Line 7 Beijing Subway  China Beijing West railway station - Universal Resort 40.3 (25.0) 2021
Line 4 Chengdu Metro  China Wansheng – Chengdu University 39.3 (24.4) 2015–2017
Line 7 Chengdu Metro  China Circle route 38.6 (24.0) 2017
Kaluzhsko-Rizhskaya line Moscow Metro  Russia Medvedkovo – Novoyasenevskaya 37.8 (23.5) 1958–1990
Line 1 Chengdu Metro  China Weijianian – Science City 37.47 (23.3) 2010–2018
Line 2 Shenzhen Metro  China Chiwan – Xinxiu 35.78 (22.23) 2011
Busan Subway Line 2 Busan Transportation Corporation  South Korea Jangsan–Dongwon 35.5 (22.06) 1999
Seoul Subway Line 6 Seoul Subway  South Korea Eungam Loop – Bonghwasan 35.1 (21.8) 2001
Seoul Subway Line 7
(longest branch) 		Seoul Subway  South Korea Cheongdam – Bupyeong-gu Office 35.1 (21.7) 2012
Line 5 Tianjin Metro  China Beichenkejiyuanbei – Liqizhuangnan 34.8 (21.6) 2018–2021
Line 7 Shanghai Metro  China Panguang Road – Huamu Road 34.4 (21.38) 2010
Line 8 Guangzhou Metro  China Wanshengwei—Jiaoxin 33.9 (21.1) 2010–2020
M4 Istanbul Metro  Turkey Kadıköy – Sabiha Gökçen Havalimanı 33.5 (20.8) 2012–2022
Circle MRT line Mass Rapid Transit (Singapore)  Singapore Dhoby Ghaut – HarbourFront 33.3 (20.69)[7] 2009–2012
L-7 Madrid Metro  Spain Hospital del Henares – Pitis 32.9 (20.5) 2007
U7 Berlin U-Bahn  Germany Rathaus Spandau-Rudow 31.8 (19.7)[8] 1924–1984
Line 1 Beijing Subway  China Pingguoyuan – Dawang Lu 31.0 (19.3) 1971–2000
Line 16 Beijing Subway  China Bei'anhe – Yuyuantan East Gate 31.0 (19.2) 2016–2021
Solntsevskaya line Moscow Metro  Russia Aeroport Vnukovo – Delovoy Tsentr 30.9 (19.2) 2014–2023
IND Eighth Avenue Line and IND Fulton Street Line[9] New York City Subway  United States Inwood – 207th Street – Grant Avenue 30.8 (19.14) 1956
Line 2 Orange Montreal Metro  Canada Côte-Vertu – Montmorency 30.8 (19.14) 2007
Thomson–East Coast line Mass Rapid Transit (Singapore)  Singapore Woodlands North – Gardens by the Bay 30.4 km (18.9 mi) 2020–2022
Line 2 Shanghai Metro  China East Xujing – Longyang Road 30.2 (18.77) 2010
Moskovsko-Petrogradskaya Line Saint Petersburg Metro  Russia Parnas–Kupchino 30.1 (18.7) 1961–2006
Line 8 Shanghai Metro  China Shiguang Road – Luheng Road 29.7 (18.45) 2009
Kirovsko-Vyborgskaya Line Saint Petersburg Metro  Russia Devyatkino – Prospekt Veteranov 29.57 (18.4) 1955–1978
Line 8 Chengdu Metro  China (Phase 2 is 7.94 km) 29.1 (18.1) 2020
Line 2 Chengdu Metro  China Tianhe Road – Chengdu Institute of Public Administration 29.0 (18.0) 2012–2013
Bannan Line (Taipei Metro Blue Line) Taipei Metro  Taiwan Dingpu – Taipei Nangang Exhibition Center 28.2 (17.6)
 1999–2015
Line 4 Beijing Subway  China Anheqiao Bei (N) – Gongyi Xiqiao 28.2 (17.5) 2009–2010
Incheon Subway Line 1 Incheon Subway  South Korea Bakchon – International Business District 27.9 (17.42) 1999–2009
Northern line London Underground  United Kingdom Morden – East Finchley 27.8 (17.2) 1890–1940
Nevsko-Vasileostrovskaya Line Saint Petersburg Metro  Russia Begovaya–Rybatskoye 27.7 (17.2) 1967–2018
Tanimachi Line Osaka Metro  Japan Dainichi–Nagahara 27.1 (16.7) 1967–1983
M5 Istanbul Metro  Turkey Üsküdar – Samandıra Merkez 26.5 (12.5) 2017–2024
Meijo Line [citation needed] Nagoya Municipal Subway  Japan Kanayama–Nagoya Dome-mae Yada-Kanayama 26.4 (16.4) 1965–2004
B Line Los Angeles Metro Rail  United States North Hollywood - Union Station 26.4 (16.4) 1993–2000
Frunzensko-Primorskaya Line Saint Petersburg Metro  Russia Komendantsky Prospekt – Shushary 26.2 (16.3) 1997–2019
Line 1 Suzhou Metro  China Mudu – Zhongnan Jie 25.7 (16.0) 2012
Line 3[10] Athens Metro  Greece Dimotiko Theatro – Doukissis Plakentias 25.3 (15.72) 2023
Helsinki Metro Helsinki Metro  Finland Kalasatama – Kivenlahti 25.2 (15.7) 1982–2022
Orange Line Taipei Metro  Taiwan Huilong–Nanshijiao 25.1 (15.6)
(longest branch) 		1998–2013
Line 3 Santiago Metro  Chile Plaza de Quilicura - Fernando Castillo Velasco 25 (13.5) 2019–2023
Yurakucho Line Tokyo Metro  Japan Chikatetsu Narimasu – Tatsumi 24.6 (15.3) 1974–1988
U2 Munich U-Bahn  Germany Feldmoching – Messestadt Ost 24.4 (15.2) 1980–2001
Yellow Line Delhi Metro  India GTB Nagar – Saket 24 (14.9)[11][12] 2009–2010
L-1 Madrid Metro  Spain Valdecarros – Pinar de Chamartín 23.88 (14.84) 1919–2007
L-6 Madrid Metro  Spain Circle route 23.47 (14.58) 1979–2007
Line 9 Shanghai Metro  China Jiuting – Middle Yanggao Road 23.3 (14.48) 2007–2010
Line 1 Green Montreal Metro  Canada Angrignon – Honoré-Beaugrand 23.26 (14.45) 1966–1978
Warsaw Metro M1 Warsaw Metro  Poland Kabaty–Młociny 23.1 (14.35) 1995–2008
Line 2 Beijing Subway  China Circle route 23.1 (14.35) 1984–1987
M3 Istanbul Metro  Turkey Bakırköy Sahil – Şehir Hastanesi Viaduct 22.6 (16.6) 2013–2024
Line 9 Chengdu Metro  China Phase 1 of the second loop line in Chengdu, all underground 22.18 km (13.78 mi) 2020
Line 19 Beijing Subway  China Mudanyuan – Xingong 22.4 (13.9) 2021
Songshan-Xindian Line (Taipei Metro Green Line) Taipei Metro  Taiwan Songshan-Xindian 21.3 (13.2) 1998–2014
Line 4 Shanghai Metro  China Hailun Road – Yishan Road 21.1 (13.11) 2005–2007
Toei Mita Line Toei Subway  Japan Meguro – Shimura-Sakaue 21.1 (13.11) 1968–2000
Victoria line London Underground  United Kingdom Walthamstow Central – Brixton 21.0 (13.05) 1968–1971
Obolonsko–Teremkivska line Kyiv Metro  Ukraine Heroiv Dnipra–Teremky 20.95 (13.02) 1976–2013
Line 6 Shanghai Metro  China Boxing Road – Oriental Sports Center 20.34 (12.64) 2007–2011
Line 1 Barcelona Metro  Spain Fondo – Hospital de Bellvitge 20.2 (12.56) 1926–1989
Tozai Line [citation needed] Sapporo Municipal Subway [citation needed]  Japan Miyanosawa – Shin-Sapporo [citation needed] 20.1 (12.4) 1976–1999
M1 Ankara Metro  Turkey Koru – Atatürk Kültür Merkezi 20.1 (12.4) 1997–2014
L-5 Madrid Metro  Spain Alameda de Osuna – Empalme 20.005 (12.5) 1968–2006
Line 9 Barcelona Metro  Spain Zona Universitaria – Aeroport T1 20.0 (12.5) 2004–2016
North East MRT line Mass Rapid Transit (Singapore)  Singapore HarbourFront–Punggol 20.0 (12.43)[13] 2003–2011
Bucharest Metro Line M3 Bucharest Metro  Romania Preciziei – Anghel Saligny 20.0 (12.43) 1983–2008
Line 2 Tianjin Metro  China Caozhuang – Guoshanlu 19.7 (12.2) 2012–2014
Nekrasovskaya line Moscow Metro  Russia Nizhegorodskaya – Nekrasovka 19.6 (12.2) 2019–2020
Paris Métro Line 9 Paris Métro  France Pont de Sèvres – Mairie de Montreuil 19.6 (12.18) 1922–1937
M2 Istanbul Metro  Turkey Şişhane – Hacıosman
Line is 23,49 km long, but the longest continuous underground section is 19.54 km long. 		19.54 (12.14) 2000–2014
Red, Yellow, Blue, and Green Lines Bay Area Rapid Transit, San Francisco  United States Balboa Park – West Oakland 19.5 (12.12) 1973
Metro Northwest Sydney Metro  Australia Cherrybrook–Chatswood 19.5 km (12.1 mi) 2009–2019
Kol'tsevaya Line Moscow Metro  Russia Circle route 19.4 (12.2) 1950–1954
U3 Munich U-Bahn  Germany Moosach – Fürstenried West 19.4 (12.05) 1972–2009
Line 4 Tianjin Metro  China Dongnanjiao – Xinxingcun 19.4 (12) 2021
Line 3 Tianjin Metro  China Huayuan – Tianshili 19.2 (11.9) 2012–2013
Maskoŭskaja line Minsk Metro  Belarus Malinawka–Uruchcha 19.1 (11.9) 1984–2014
Midosuji Line Osaka Metro  Japan Nakatsu – Nakamozu 19.1 (11.87) 1933–1987
Line 5 Barcelona Metro  Spain Vall d'Hebron – Cornella centre 19.0 (11.8) 1955–2010
Warsaw Metro M2 Warsaw Metro  Poland Bemowo–Bródno 18.9 km (11.7 mi) 2015–2022
Mexico City Metro Line 3 Mexico City Metro  Mexico La Raza – Universidad 18.7 (11.62) 1970–1983
Paris Métro Line 7 Paris Métro  France La Courneuve – 8 Mai 1945 – Villejuif – Louis Aragon 18.3 (11.6) 1910–1987
Red Line Baku Metro  Azerbaijan Icheri Sheher – Hazi Aslanov 18.6 (11.6) 1967–2002
Line 3 Barcelona Metro  Spain Zona Universitària – Trinitat Nova 18.4 (11.44) 1925–2008
Line 1 Shanghai Metro  China Shanghai South Railway – Shanghai Circus World 18.1 (11.25) 1993–2004
Avtozavodskaya Line Minsk Metro  Belarus Kamennaya Gorka – Mogilevskaya 18.1 (11.25) 1990–2005
U8 Berlin U-Bahn  Germany Wittenau – Hermannstraße 18.1 (11.25) 1927–1996
Line B Prague Metro  Czechia Rajská zahrada – Hůrka 18.0 (11.2) 1998
Line 2[10] Athens Metro  Greece Anthoupoli – Elliniko 17.9 (11.12) 2013
Line 5 Beijing Subway  China Huixin Xijie Beikou – Songjiazhuang 17.8 (11.1) 2007
Washington, DC Metro Red Line Washington Metro  United States Union Station – Medical Center 17.8 (11.05) 1984
Line 15 Beijing Subway  China Qinghua Donglu Xikou – Maquanying 17.6 (10.9) 2014
Tozai Line Kyoto Municipal Subway  Japan Uzumasa Tenjingawa-Yamashina-Rokujizo 17.5 (10.92) 2008[page needed]
Line 4 Barcelona Metro  Spain Trinitat Nova – La Pau 17.3 (10.76) 1908[clarification needed]–1999
Kholodnohirsko–Zavodska line Kharkiv Metro  Ukraine Kholodna Hora – Industrialna 17.3 (10.7) 1975–1978
Milan Metro M3 Milan Metro  Italy Comasina – San Donato 17.105 (10.62) 1990–2011
Bucharest Metro Line M2 Bucharest Metro  Romania Pipera – Berceni 17.1 (10.62) 1986–1987
Tōzai Line Tokyo Metro  Japan Nakano–Minami-Sunamachi 17.0 (10.56) 1969
M1 İzmir Metro  Turkey Kaymakamlık – Basmane
Line is 27 km long, but only 19.8 km of it is underground in two noncontinuous sections. The shorter underground section is 2.9 km long. 		16.9 (10.5) 2000–2024
Hanzomon Line Tokyo Metro  Japan Shibuya-Oshiage 16.8 (10.4) 1978–2003
Mexico City Metro Line 1 Mexico City Metro  Mexico Observatorio – Pantitlán 16.7 (10.38) 1984
Blue Line Chennai Metro  India Saidapet - Tondiarpet 16.6 (10.32) 2018–2021
Line 9 Beijing Subway  China National Library – Guogongzhuang 16.5 (10.3) 2012
Line 17 Beijing Subway  China Shilihe – Jiahuihu 16.5 (10.3) 2021
L-3 Madrid Metro  Spain Villaverde Alto – Moncloa 16.42 (10.2) 2007
Line 1 Chongqing Rail Transit  China Chaotianmen – Shapingba 16.4 (10.2) 2011
Line A Prague Metro  Czechia Nemocnice Motol – Depo Hostivař
Line is 17.1 km long, but only 16.4 km of it is underground. 		16.4 (10.2) 2015
Kalininskaya line Moscow Metro  Russia Tretyakovskaya – Novokosino 16.3 (10.1) 1979–2012
L-4 Madrid Metro  Spain Argüelles – Pinar de Chamartín 16.0 (9.9) 2007
Sviatoshynsko–Brovarska line Kyiv Metro  Ukraine Akademmistechko–Dnipro 16.0 (9.9) 1960–2003
Seoul Subway Line 7
(shorter section) 		Seoul Subway  South Korea Suraksan – Konkuk University 16.0 (9.9) 1996
U6 Berlin U-Bahn  Germany Alt-Mariendorf – Kurt-Schumacher-Platz 15.9 (9.86) 1923–1966
M9 Istanbul Metro  Turkey Ataköy – Olimpiyat Viaduct 15.8 (10.7) 2013–2024
M3 Line Copenhagen Metro  Denmark Circle route 15.5 km (9.6 mi) 2019
Line 3[14] Budapest Metro Hungary Hungary Határ út–Újpest-központ
Line is 17.39 km long, but only 15.5 km of it is underground. 		15.5 km (9.6 mi) 1990
Line 1 Tianjin Metro  China Qinjiandao – Tucheng 15.37 (9.55) 2006
Line 6 Santiago Metro  Chile Cerrillos – Los Leones 15.3 (9.5) 2017
Paris Métro Line 12 Paris Métro  France Front Populaire – Mairie d'Issy 15.3 (9.5) 1910–2012
Syretsko–Pecherska line Kyiv Metro  Ukraine Syrets – Pivdennyi Bridge 15.2 (9.4) 1989–2004
Line 1 (Kolkata Metro) Kolkata Metro  India Mahanayak Uttam Kumar -Dum Dum 15.17 (9.38) 1984–1995
Line 10 Chengdu Metro  China Taipingyuan – Shuangliu West Station 15.0 (9.32) 2019
Island line MTR Hong Kong Hong Kong Kennedy Town[15] – Heng Fa Chuen 15.0 (9.32) 1985 (as  Hong Kong)–2014

World's longest subway tunnel sections under construction

Name System Country Stations Length Expected completion
Ligne 15 Paris Métro  France Circle route, all underground 75 km (47 mi) 2025–2030
M11 Istanbul Metro  Turkey (Phase 2, Kargo Terminali - Halkalı section is 31.5 km in length and is currently under construction, all underground) 69 km (43 mi) Phase 2：2024
Cross Island line Mass Rapid Transit (Singapore)  Singapore Linear route with branch section, all underground
(Excludes potential extension from Punggol to Seletar Airport under planning) 		65.5 km (40.7 mi)
 2030–2032
Line 13 Guangzhou Metro  China Whole lines is underground
(includes Phase II: Chaoyang – Zhucun is 33.6 km and under construction) 		59.2 km (36.8 mi) Phase 1：2017
Phase 2：2024 and later
Line 13 Shenzhen Metro  China Whole line is underground 45.72 km (28.41 mi) Phase 1：2024
Phase 2 (North extension)：2025
South extension：2026
L9 / L10 Barcelona Metro  Spain 43.7 km (27.2 mi)
(incl. branches) 		2009 and 2016 partially;
central section unknown
Thomson–East Coast line Mass Rapid Transit (Singapore)  Singapore Woodlands North to Sungei Bedok
(Phases 4 and 5, Gardens by the Bay – Sungei Bedok are 13 km in length and are currently under construction, all underground) 		43.4 km (27.0 mi) Phase 4：2024
Phase 5：2025
Line 11 Guangzhou Metro  China Circle route, all underground 43.2 km (26.8 mi) 2024
Troitskaya line Moscow Metro  Russia Whole line is underground 40.2 km (25.0 mi) Phase 1：2024 (25 km (16 mi))
Phase 2：2028–2029 (15.2 km (9.4 mi))
Athens Metro Line 4 Athens Metro Greece 38.2 km (23.7 mi)[16] 2029 for Phase 1[17]
Metro Manila Subway Manila Metro Rail Transit System  Philippines Mindanao Avenue – Ninoy Aquino International Airport (All underground) 36 km (22 mi) 2029
Line 3 Mumbai Metro  India Cuffe Parade-SEEPZ 33.02 km (20.52 mi) 2024 for Phase 1
Line 13 Chengdu Metro  China Qiligou – Longhua Temple underground section 29.07 km (18.06 mi) 2024
Line 3 Chennai Metro  India Madhavaram Milk Colony – Tharamani 27.086 km (16.830 mi) 2026–2027
D Line Extension Los Angeles Metro  United States Westwood/VA Hospital – Union Station 24.3 km (15.1 mi) 2025–2026
Line 30 Chengdu Metro  China (Phase 1 is 26.28 km) 26.28 km (16.33 mi) 2024
Suburban Rail Loop Melbourne rail network  Australia SRL East and North is underground (Cheltenham to Airport) 26 km (16 mi) 2035[18] (Eastern stretch)
Metro West Sydney Metro  Australia 24 km (15 mi) 2032[19]
Metro Western Sydney Airport Sydney Metro  Australia 23 km (14 mi) 2026
Blue Line Stockholm Metro  Sweden The extension to Nacka will be around 8 km, all underground, total 22 km including older sections. 22 km (14 mi) 2030
Line 27 Chengdu Metro  China Whole line is 24.86 km, but only 17.34 km underground 17.34 km (10.77 mi) 2024
Metro City & Southwest Sydney Metro  Australia Chatswood – Sydenham 16 km (9.9 mi) 2024[20]

See also

References

  1. ^ "独家探访|关于西部最长地铁6号线，你想知道的一切都在这里". 9 September 2020. 成都地铁6号线全长68.76千米，共设有56座车站
  2. ^ a b "广州地铁18号线陇枕停车场首次迎接"活力橙"". 金羊网. 20 February 2021. Archived from the original on 10 April 2021. Retrieved 10 April 2021. 广州市2021年十件民生实事显示，2021年广州将力争开通试运营地铁18号线先通段（万顷沙-冼村，58.3公里）、22号线先通段（番禺广场-陈头岗，18.2公里）
  3. ^ "Не 70 км, а 57,5! Как московские власти "удлинили" Большую кольцевую линию метро". 22 March 2023.
  4. ^ "IMG 20230327 063939 969 — Postimages".
  5. ^ First stretch opens in 1969 as part of line 2
  6. ^ "Downtown Line 3 officially opens; Khaw Boon Wan announces review of fares incurred when switching between stations". The Straits Times. 20 October 2017. Retrieved 13 June 2019.
  7. ^ "Factsheet on Circle Line Extension". www.lta.gov.sg. 28 November 2011. Retrieved 13 June 2019.
  8. ^ "World's longest railway tunnel" 1984–1988
  9. ^ Note that both lines are served continuously by the A train within a single tunnel.
  10. ^ a b "Urban Rail Transport SA :METRO Line 1". Retrieved 30 September 2014.
  11. ^ "Metro to bridge Delhi-Gurgaon divide today". The Hindu. Chennai, India. 3 September 2010. Retrieved 19 October 2010.
  12. ^ Rajesh Ahuja (29 August 2010). "Gurgaon Metro set for operationalisation next week". Retrieved 19 October 2010.
  13. ^ "North East Line". www.lta.gov.sg. Retrieved 13 June 2019.
  14. ^ "3-as metróvonal jellemzői". Metros.hu (in Hungarian). Retrieved 27 March 2016.
  15. ^ Including 0.4 miles/0.65 km of overrun tunnel to the west of Kennedy Town station. - Gammon. "MTR West Island Line - Sai Ying Pun; Hong Kong University and Kennedy Town Stations - Project details". - CIHT Hong Kong Branch. "West Island Line, Contact 705, KET Station & Overrun Tunnel" (PDF).
  16. ^ "Ελληνικο Μετρο Α.ε." (PDF). Archived from the original (PDF) on 21 September 2022.
  17. ^ "Μετρό-Γραμμή 4: Ξεκινούν τα έργα - Οι 15 σταθμοί από Γαλάτσι έως Γουδί - Έτοιμο σε 8 χρόνια". www.naftemporiki.gr (in Greek). 22 June 2021. Retrieved 20 May 2022.
  18. ^ "Works Start Today on Victoria's Suburban Rail Loop | Premier of Victoria".
  19. ^ https://www.nsw.gov.au/media-releases/metro-west-to-supercharge-housing-supply
  20. ^ https://www.nsw.gov.au/media-releases/sydenham-bankstown-metro
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