Rapid transit track gauge

The vast majority of rapid transit systems use 1,435 mm (4 ft 8 1⁄2 in) standard gauge. Some of the largest and oldest subway systems in the world use standard gauge in agreement with the country wide dominant usage for track gauge, e.g. London Underground (1863), Chicago "L" (1892), Vienna Metro (1898), Paris Métro (1900), Berlin U-Bahn (1902), New York City Subway (1904), Stockholm Metro (1950), Milan Metro (1964), Mexico City Metro (1969), Beijing Subway (1971), Seoul Metropolitan Subway (1974), Shanghai Metro (1993), Guangzhou Metro (1997), Shenzhen Metro (2004). A lot of rapid transit systems in countries where the main lines do not use standard gauges are built in standard gauge, e.g. Barcelona Metro, Santiago Metro, Taipei Metro or many systems in India.

Track gauge
By transport mode
By size (list)
Minimum
  Fifteen inch 381 mm (15 in)
Narrow
 
  • 600 mm
  • 610 mm
  • (1 ft ​11 5⁄8 in)
  • (2 ft)
 
  • 750 mm
  • 760 mm
  • 762 mm
  • (2 ft ​5 1⁄2 in)
  • (2 ft ​5 15⁄16 in)
  • (2 ft 6 in)
 
  • 891 mm
  • 900 mm
  • 914 mm
  • (2 ft ​11 3⁄32 in)
  • (2 ft ​11 7⁄16 in)
  • (3 ft)
  Metre 1,000 mm (3 ft ​3 3⁄8 in)
  Three foot six inch 1,067 mm (3 ft 6 in)
  Standard 1,435 mm (4 ft ​8 1⁄2 in)
Broad
  Dresden gauge 1,450 mm (4 ft ​9 3⁄32 in)
  Leipzig gauge 1,458 mm (4 ft ​9 13⁄32 in)
  Toronto gauge 1,495 mm (4 ft ​10 7⁄8 in)
 
  • 1,520 mm
  • 1,524 mm
  • (4 ft ​11 7⁄8 in)
  • (5 ft)
 
  • 1,581 mm
  • 1,588 mm
  • 1,600 mm
  • (5 ft ​2 1⁄4 in)
  • (5 ft ​2 1⁄2 in)
  • (5 ft 3 in)
  Baltimore gauge 1,638 mm (5 ft ​4 1⁄2 in)
 
  • 1,668 mm
  • 1,676 mm
  • (5 ft ​5 21⁄32 in)
  • (5 ft 6 in)
Change of gauge
By location

There are also systems that use 1,067 mm (3 ft 6 in) (some systems in Japan and Jakarta MRT), 1,524 mm (5 ft) (the standard in former Soviet Union), 1,600 mm (5 ft 3 in) (the standard in Brazil) and few others.

Some systems use rubber tires, with someones adding them to the normal steel wheels (e.g. Paris Metro, Mexico City Metro, Montreal Metro) and some others with only tires (e.g. Lille Metro, Sapporo Municipal Subway).

Some systems use monorail, the largest ones are in Chongqing Rail Transit and in São Paulo Metro.

For references for the figures, see each system's page and List of metro systems.

Country Network Route length Gauge Comment
 Algeria Algiers Metro 18.5 km (11.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Argentina Buenos Aires Underground 56.7 km (35.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Armenia Yerevan Metro 13.4 km (8.3 mi) 1,524 mm (5 ft)
 Australia Sydney Metro 36 km (22 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Austria Vienna U-Bahn 83.3 km (51.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Azerbaijan Baku Metro 36.7 km (22.8 mi) 1,524 mm (5 ft)
 Belarus Minsk Metro 40.8 km (25.4 mi) 1,524 mm (5 ft)
 Belgium Brussels Metro 39.9 km (24.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Brazil Belo Horizonte Metro 28.1 km (17.5 mi) 1,600 mm (5 ft 3 in)
 Brazil Brasília Metro 42.4 km (26.3 mi) 1,600 mm (5 ft 3 in)
 Brazil Porto Alegre Metro 43.8 km (27.2 mi) 1,600 mm (5 ft 3 in)
 Brazil Recife Metro 39.5 km (24.5 mi) 1,600 mm (5 ft 3 in) Includes rapid transit lines only: Linha Centro (Center Line) and Linha Sul (South Line)
 Brazil Rio de Janeiro Metro 58 km (36 mi) 1,600 mm (5 ft 3 in)
 Brazil Salvador Metro 32.5 km (20.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Brazil São Paulo Metro 56.9 km (35.4 mi) 1,600 mm (5 ft 3 in) Line 1, Line 2 and Line 3
31.4 km (19.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 4 and Line 5
12.9 km (8.0 mi) Monorail Line 15
 Bulgaria Sofia Metro 48 km (30 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Canada Montreal Metro 69.2 km (43.0 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Michelin rubber-tyred metro system has both rubber tires and steel wheels
 Canada Toronto subway 70.5 km (43.8 mi) 4 ft 10 7⁄8 in (1,495 mm) Line 1, Line 2 and Line 4
6.4 km (4.0 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 3
 Canada SkyTrain 79.6 km (49.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Chile Santiago Metro 69.7 km (43.3 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 3, Line 4, Line 4A and Line 6
70.8 km (44.0 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Line 1, Line 2 and Line 5. Michelin rubber-tyred metro system has both rubber tires and steel wheels
 China Beijing Subway 713.76 km (443.51 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except S1 line and Xijiao line (the latter one is a light rail)
9.1 km (5.7 mi) Maglev S1 line
 China Changchun Subway 68.8 km (42.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Changsha Metro 142.5 km (88.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Changzhou Metro 34.24 km (21.28 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Chengdu Metro 518 km (322 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Chongqing Rail Transit 252.9 km (157.1 mi) 1,435 mm (4 ft 8 1⁄2 in) Loop line, Line 1, Line 4, Line 5, Line 6 and Line 10
98.5 km (61.2 mi) Monorail Line 2 and Line 3
 China Dalian Metro 153.5 km (95.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Dongguan Rail Transit 37.8 km (23.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Foshan Metro 34.4 km (21.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Fuzhou Metro 60.4 km (37.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Guangzhou Metro 527.2 km (327.6 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except Zhujiang New Town APM
3.9 km (2.4 mi) rubber tires Zhujiang New Town APM
 China Guiyang Metro 35.1 km (21.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Hangzhou Metro 306 km (190 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Harbin Metro 31.3 km (19.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Hefei Metro 114.7 km (71.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Hohhot Metro 49 km (30 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Jinan Metro 84.3 km (52.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Kunming Rail Transit 137.8 km (85.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Lanzhou Metro 25.9 km (16.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Nanchang Metro 88.5 km (55.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Nanjing Metro 378 km (235 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Nanning Rail Transit 108 km (67 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Ningbo Rail Transit 154.3 km (95.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Qingdao Metro 243.6 km (151.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Shanghai Metro 735.6 km (457.1 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except Pujiang line. This figure excludes Maglev line and Jinshan Railway, both often included in Shanghai Metro maps but not considered part of the system.
6.7 km (4.2 mi) rubber tires Pujiang line
 China Shenyang Metro 115.8 km (72.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Shenzhen Metro 411 km (255 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Shijiazhuang Metro 61.6 km (38.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Suzhou Rail Transit 164.1 km (102.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Taiyuan Metro 23.65 km (14.70 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Tianjin Metro 233.2 km (144.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Ürümqi Metro 27.6 km (17.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Wenzhou Metro 53.5 km (33.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Wuhan Metro 360.3 km (223.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Wuxi Metro 89.4 km (55.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Xiamen Metro 71.9 km (44.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Xi'an Metro 245 km (152 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Xuzhou Metro 46.2 km (28.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 China Zhengzhou Metro 206.5 km (128.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Hong Kong Mass Transit Railway 102.1 km (63.4 mi) 1,435 mm (4 ft 8 1⁄2 in) East Rail line, West Rail line, Tuen Ma line and South Island line
79.4 km (49.3 mi) 1,432 mm (4 ft 8 3⁄8 in) Kwun Tong line, Tsuen Wan line, Island line, Tung Chung line, Airport Express, Tseung Kwan O line, Disneyland Resort line
 Macau Macau Light Rapid Transit 9.3 km (5.8 mi) rubber tires
 Colombia Medellín Metro 31.3 km (19.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Czech Republic Prague Metro 65.2 km (40.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Denmark Copenhagen Metro 38.2 km (23.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Dominican Republic Santo Domingo Metro 28.4 km (17.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Egypt Cairo Metro 77.9 km (48.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Finland Helsinki Metro 35 km (22 mi) 1,524 mm (5 ft)
 France Lille Metro 45 km (28 mi) rubber tires VAL technology
 France Lyon Metro 2.4 km (1.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Line C rack railway
29.5 km (18.3 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Line A, Line B and Line D. Michelin rubber-tyred metro system has both rubber tires and steel wheels
 France Marseille Metro 21.9 km (13.6 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Michelin rubber-tyred metro system has both rubber tires and steel wheels
 France Paris Metro 158.3 km (98.4 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 2, Line 3, Line 5, Line 7, Line 8, Line 9, Line 10, Line 12 and Line 13
62.5 km (38.8 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Line 1, Line 4, Line 6, Line 11 and Line 14. Michelin rubber-tyred metro system has both rubber tires and steel wheels
 France Rennes Metro 9.4 km (5.8 mi) rubber tires VAL technology
 France Toulouse Metro 28.2 km (17.5 mi) rubber tires VAL technology
 Georgia Tbilisi Metro 27.1 km (16.8 mi) 1,524 mm (5 ft)
 Germany Berlin U-Bahn 156.1 km (97.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Germany Frankfurt U-Bahn 64.9 km (40.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Germany Hamburg U-Bahn 106.1 km (65.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Germany Hanover Stadtbahn 121 km (75 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Germany Munich U-Bahn 95 km (59 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Germany Nuremberg U-Bahn 38.2 km (23.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Greece Athens Metro 88.5 km (55.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Hungary Budapest Metro 38.2 km (23.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Ahmedabad Metro 6.5 km (4.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Bengalaru Metro 48.9 km (30.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Chennai Metro 45 km (28 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Delhi Metro 149.4 km (92.8 mi) 1,676 mm (5 ft 6 in) Red Line, Yellow Line and Blue Line (1-4 lines)
198.3 km (123.2 mi) 1,435 mm (4 ft 8 1⁄2 in) Green Line, Violet Line, Magenta Line, Pink Line, Grey Line (5-9 lines) and Airport Metro Express
 India Rapid Metro Gurgaon 11.7 km (7.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Hyderabad Metro 67 km (42 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Jaipur Metro 12.1 km (7.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Kochi Metro 25.6 km (15.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Kolkata Metro 27.3 km (17.0 mi) 1,676 mm (5 ft 6 in) Line 1
7.2 km (4.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 2
 India Lucknow Metro 23 km (14 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Mumbai Metro 11.4 km (7.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Nagpur Metro 24.5 km (15.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 India Noida Metro 29.7 km (18.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Indonesia Jakarta MRT 15.7 km (9.8 mi) 1,067 mm (3 ft 6 in)
 Indonesia Jakarta LRT 5.8 km (3.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Indonesia Palembang LRT 23.4 km (14.5 mi) 1,067 mm (3 ft 6 in)
 Iran Isfahan Metro 16.2 km (10.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Iran Mashhad Urban Railway 37.5 km (23.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Iran Shiraz Metro 24.5 km (15.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Iran Tabriz Metro 7 km (4.3 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Iran Tehran Metro 149.1 km (92.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Brescia Metro 13.7 km (8.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Catania Metro 8.8 km (5.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Genoa Metro 7.1 km (4.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Milan Metro 96.9 km (60.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Naples Metro 20.5 km (12.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Rome Metro 60 km (37 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Italy Turin Metro 13.2 km (8.2 mi) rubber tires VAL technology
 Japan Astram Line 18.4 km (11.4 mi) rubber tires
 Japan Fukuoka City Subway 17.8 km (11.1 mi) 1,067 mm (3 ft 6 in) Kūkō Line and Hakozaki Line
12 km (7.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Nanakuma Line
 Japan Kobe Municipal Subway 38.1 km (23.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Japan Kyoto Municipal Subway 31.2 km (19.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Japan Nagoya Municipal Subway 53.3 km (33.1 mi) 1,435 mm (4 ft 8 1⁄2 in) Higashiyama Line, Meijō Line and Meikō Line
40 km (25 mi) 1,067 mm (3 ft 6 in) Tsurumai Line, Sakura-dōri Line and Kamiiida Line
 Japan Osaka Metro 129.9 km (80.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Japan Sapporo Municipal Subway 48.0 km (29.8 mi) rubber tires
 Japan Sendai Subway 14.8 km (9.2 mi) 1,067 mm (3 ft 6 in) Namboku Line
13.9 km (8.6 mi) 1,435 mm (4 ft 8 1⁄2 in) Tōzai Line
 Japan Toei Subway (Tokyo) 59 km (37 mi) 1,435 mm (4 ft 8 1⁄2 in) Asakusa Line and Ōedo Line
26.5 km (16.5 mi) 1,067 mm (3 ft 6 in) Mita Line
23.5 km (14.6 mi) 4 ft 6 in (1,372 mm) Shinjuku Line
 Japan Tokyo Metro 41.7 km (25.9 mi) 1,435 mm (4 ft 8 1⁄2 in) Ginza Line and Marunouchi Line
153.4 km (95.3 mi) 1,067 mm (3 ft 6 in) All lines except Ginza Line and Marunouchi Line
 Japan Tokyo Monorail 17.8 km (11.1 mi) Monorail
 Japan Rinkai Line (Tokyo) 12.2 km (7.6 mi) 1,067 mm (3 ft 6 in)
 Japan Yokohama Municipal Subway 53.4 km (33.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Japan Minatomirai Line (Yokohama) 4.1 km (2.5 mi) 1,067 mm (3 ft 6 in)
 Kazakhstan Almaty Metro 11.3 km (7.0 mi) 1,524 mm (5 ft)
 North Korea Pyongyang Metro 22.5 km (14.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Busan Metro 103.8 km (64.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Includes rapid transit lines only: lines 1-3
12.7 km (7.9 mi) rubber tires Line 4
 South Korea Daegu Metro 59.8 km (37.2 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 1 and Line 2
23.9 km (14.9 mi) Monorail Line 3
 South Korea Daejeon Metro 22.7 km (14.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Gimpo Goldline 23.7 km (14.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Gwangju Metro 20.1 km (12.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Incheon Subway 59.4 km (36.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Seoul Subway 340.4 km (211.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Lines 1-9
 South Korea Korail metro lines 133 km (83 mi) 1,435 mm (4 ft 8 1⁄2 in) Includes the Bundang Line, Korail portions of Seoul Subway Line 3 (Ilsan Line) and Seoul Subway Line 4 (Gwacheon Line and Ansan Line), and the Suin Line
 South Korea Shinbundang Line 31.3 km (19.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 South Korea Uijeongbu U Line 11.2 km (7.0 mi) rubber tires VAL technology
 Malaysia Rapid KL 142.5 km (88.5 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except KL Monorail
8.6 km (5.3 mi) Monorail KL Monorail
 Mexico Guadalajara Metro 21 km (13 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 3
 Mexico Mexico City Metro 165.7 km (103.0 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires All lines except Line 12 and Line A. Michelin rubber-tyred metro system has both rubber tires and steel wheels
35.2 km (21.9 mi) 1,435 mm (4 ft 8 1⁄2 in) Line 12 and Line A
 Mexico Monterrey Metro 32 km (20 mi)
 Netherlands Amsterdam Metro 44.3 km (27.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Netherlands Rotterdam Metro 101 km (63 mi) 1,435 mm (4 ft 8 1⁄2 in) Some sections of the Lines A and B have some level crossings (with priority) and so could therefore be considered "light rail" instead of "metro"
 Norway Oslo Metro 86 km (53 mi) 1,435 mm (4 ft 8 1⁄2 in) This system has similarities to light rail systems, because of existence of road level crossings, but is listed since there are almost entirely separated from roads
 Pakistan Lahore Metro 27.1 km (16.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Panama Panama Metro 36.8 km (22.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Peru Lima Metro 34.6 km (21.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Philippines Manila Light Rail Transit System 33.4 km (20.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Philippines Manila Metro Rail Transit System 16.9 km (10.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Poland Warsaw Metro 35.5 km (22.1 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Portugal Lisbon Metro 44.2 km (27.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Qatar Doha Metro 76 km (47 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Romania Bucharest Metro 77.53 km (48.17 mi) 1,432 mm (4 ft 8 3⁄8 in) Gauge is nominally 1432, but the tolerances (+10, -3) are centered around Standard gauge [1]
 Russia Kazan Metro 16.8 km (10.4 mi) 1,524 mm (5 ft)
 Russia Moscow Metro 408.1 km (253.6 mi) 1,524 mm (5 ft) All lines except Moscow Central Circle (a conventional railway numbered as Line 14) and Moscow Monorail (Line 13)
4.7 km (2.9 mi) Monorail Moscow Monorail (Line 13)
 Russia Nizhny Novgorod Metro 21.6 km (13.4 mi) 1,524 mm (5 ft)
 Russia Novosibirsk Metro 15.9 km (9.9 mi) 1,524 mm (5 ft)
 Russia Saint Petersburg Metro 124.8 km (77.5 mi) 1,524 mm (5 ft)
 Russia Samara Metro 11.6 km (7.2 mi) 1,524 mm (5 ft)
 Russia Yekaterinburg Metro 12.7 km (7.9 mi) 1,524 mm (5 ft)
 Saudi Arabia Mecca Metro 18.1 km (11.2 mi) 1,435 mm (4 ft 8 1⁄2 in) Al Mashaaer Al Mugaddassah Metro Southern Line (Line S)
 Singapore Mass Rapid Transit 205.1 km (127.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Spain Barcelona Metro 20.7 km (12.9 mi) 1,672 mm (5 ft 5 13⁄16 in) Line 1
113.6 km (70.6 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except Line 1 and Line 8
11.3 km (7.0 mi) 1,000 mm (3 ft 3 3⁄8 in) Line 8
 Spain Metro Bilbao 45.1 km (28.0 mi) 1,000 mm (3 ft 3 3⁄8 in) Line 1 and Line 2
 Spain Madrid Metro 293 km (182 mi) 1,445 mm (4 ft 8 7⁄8 in) Including lines 1-12 and Ramal. Not including the three Light Rail lines
 Sweden Stockholm Metro 105.7 km (65.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
  Switzerland Lausanne Metro 5.9 km (3.7 mi) 1,435 mm (4 ft 8 1⁄2 in) and rubber tires Only Line M2 (Michelin rubber-tyred metro system has both rubber tires and steel wheels). Line M1 is light rail
 Taiwan Kaohsiung Rapid Transit 42.7 km (26.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Red Line and Orange Line
 Taiwan Taipei Metro 127.8 km (79.4 mi) 1,435 mm (4 ft 8 1⁄2 in) All lines except Wenhu line
25.1 km (15.6 mi) rubber tires Wenhu line. VAL technology
 Taiwan Taoyuan Metro 53.1 km (33.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Thailand BTS Skytrain(Bangkok) 68.2 km (42.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Thailand MRT (Bangkok) 70.6 km (43.9 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Turkey Adana Metro 13.9 km (8.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Turkey Ankara Metro 64.4 km (40.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Turkey Bursaray 38.9 km (24.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Turkey Istanbul Metro 133 km (83 mi) 1,435 mm (4 ft 8 1⁄2 in) M1-M7 lines
 Turkey İzmir Metro 20 km (12 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Ukraine Dnipro Metro 7.1 km (4.4 mi) 1,524 mm (5 ft)
 Ukraine Kharkiv Metro 38.1 km (23.7 mi) 1,524 mm (5 ft)
 Ukraine Kyiv Metro 67.6 km (42.0 mi) 1,524 mm (5 ft)
 United Arab Emirates Dubai Metro 89.6 km (55.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United Kingdom Glasgow Subway 10.4 km (6.5 mi) 4 ft (1,219 mm)
 United Kingdom London Underground 402 km (250 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United Kingdom Docklands Light Railway 38 km (24 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United Kingdom Tyne and Wear Metro 77.5 km (48.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States MARTA (Atlanta) 76.6 km (47.6 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States Baltimore Metro Subway 24.9 km (15.5 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States MBTA subway (Boston) 61 km (38 mi) 1,435 mm (4 ft 8 1⁄2 in) Red Line, Orange Line and Blue Line
 United States Chicago "L" 165.4 km (102.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States RTA Rapid Transit: Red Line (Cleveland) 31 km (19 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States Los Angeles Metro Rail 28.0 km (17.4 mi) 1,435 mm (4 ft 8 1⁄2 in) B Line and D Line
 United States Metrorail (Miami) 39.3 km (24.4 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States New York City Subway 380.2 km (236.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States Staten Island Railway 22.5 km (14.0 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States PATH 22.2 km (13.8 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States SEPTA (Philadelphia) 48.1 km (29.9 mi) 1,435 mm (4 ft 8 1⁄2 in) Broad Street Line and Norristown High Speed Line (latter one a combination of a rapid transit, a commuter rail and a light rail systems)
20.8 km (12.9 mi) 5 ft 2 1⁄2 in (1,588 mm) Market–Frankford Line
 United States PATCO Speedline 22.9 km (14.2 mi) 1,435 mm (4 ft 8 1⁄2 in)
 United States BART (San Francisco) 186.8 km (116.1 mi) 1,676 mm (5 ft 6 in)
 United States Washington Metro 188 km (117 mi) 4 ft 8 1⁄4 in (1,429 mm)
 Puerto Rico Tren Urbano 17.2 km (10.7 mi) 1,435 mm (4 ft 8 1⁄2 in)
 Uzbekistan Tashkent Metro 59.5 km (37.0 mi) 1,524 mm (5 ft)
 Venezuela Caracas Metro 63.6 km (39.5 mi) 1,435 mm (4 ft 8 1⁄2 in) Include Los Teques Metro

    See also

    References
    1. (PDF). Metrorex http://www.metrorex.ro/Resurse/Caiet_sarcini_trenuri/Partea%200%20-%20caiet%20de%20sarcini.pdf. Missing or empty |title= (help)
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