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). Many rapid transit systems in countries where the main lines do not use standard gauges are built in standard gauge, including the Barcelona Metro, Santiago Metro, Taipei Metro, and many systems in India.

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 some ones 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	40.7 km (25.3 mi)	1,524 mm (5 ft)
Bangladesh	Dhaka Metro Rail	20.1 km (12.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
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)
	Federal District Metro	42.4 km (26.3 mi)	1,600 mm (5 ft 3 in)
	Porto Alegre Metro	43.8 km (27.2 mi)	1,600 mm (5 ft 3 in)
	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)
	Rio de Janeiro Metro	58 km (36 mi)	1,600 mm (5 ft 3 in)
	Salvador Metro	34 km (21 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Fortaleza Metro	43.6 km (27.1 mi)	1,000 mm (3 ft 3+3⁄8 in)
	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
		14.6 km (9.1 mi)	Monorail	Line 15
Bulgaria	Sofia Metro	52 km (32 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) between guide bars and rubber tires	Michelin rubber-tyred metro system has both rubber tires and steel wheels
	REM Montreal	16.6 km (10.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Toronto subway	70.5 km (43.8 mi)	4 ft 10+7⁄8 in (1,495 mm)	Line 1, Line 2 and Line 4
	Toronto subway	6.4 km (4.0 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 3
	SkyTrain	79.6 km (49.5 mi)	1,435 mm (4 ft 8+1⁄2 in)	Expo Line (SkyTrain), Millennium Line, and Canada Line
Chile	Santiago Metro	73.5 km (45.7 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 3, Line 4, Line 4A and Line 6
Chile	Santiago Metro	76 km (47 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	804 km (500 mi)	1,435 mm (4 ft 8+1⁄2 in)	All lines except S1 line (Maglev), Yizhuang T1 line and Xijiao line (light rail)
	Beijing Subway	9.1 km (5.7 mi)	Maglev	S1 line
	Changchun Rail Transit	71.6 km (44.5 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 1, Line 2 and Line 6
	Changsha Metro	217.8 km (135.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Changzhou Metro	54.03 km (33.57 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Chengdu Metro	558.11 km (346.79 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Chongqing Rail Transit	420.22 km (261.11 mi)	1,435 mm (4 ft 8+1⁄2 in)	Loop line, Line 1, Line 4, Line 5, Line 6, Line 9, Line 10 and Jiangtiao line
	Chongqing Rail Transit	98.5 km (61.2 mi)	Monorail	Line 2 and Line 3
	Dalian Metro	237.7 km (147.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Dongguan Rail Transit	37.8 km (23.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Foshan Metro	134.9 km (83.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Fuzhou Metro	143.5 km (89.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Guangzhou Metro	651.75 km (404.98 mi)	1,435 mm (4 ft 8+1⁄2 in)	All lines except Zhujiang New Town APM
	Guangzhou Metro	3.9 km (2.4 mi)	rubber tires	Zhujiang New Town APM
	Guiyang Metro	118.7 km (73.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hangzhou Metro	516 km (321 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Harbin Metro	83.78 km (52.06 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hefei Metro	201.95 km (125.49 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hohhot Metro	49 km (30 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Jinan Metro	84.3 km (52.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Jinhua Rail Transit	107 km (66 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Kunming Rail Transit	164.3 km (102.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Lanzhou Metro	34.96 km (21.72 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Luoyang Subway	43.6 km (27.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nanchang Metro	128.6 km (79.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nanjing Metro	521 km (324 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nanning Rail Transit	127.9 km (79.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nantong Rail Transit	60 km (37 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Ningbo Rail Transit	193.9 km (120.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Qingdao Metro	342.4 km (212.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Shanghai Metro	795.2 km (494.1 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.
	Shanghai Metro	6.7 km (4.2 mi)	rubber tires	Pujiang line
	Shaoxing Metro	57.8 km (35.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Shenyang Metro	163.7 km (101.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Shenzhen Metro	555.43 km (345.13 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Shijiazhuang Metro	76.5 km (47.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Suzhou Rail Transit	321.1 km (199.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Taiyuan Metro	23.65 km (14.70 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Taizhou Rail Transit	52.4 km (32.6 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Tianjin Metro	314.2 km (195.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Ürümqi Metro	27.6 km (17.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Wenzhou Metro	116.4 km (72.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Wuhan Metro	494.76 km (307.43 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Wuhu Rail Transit	46.25 km (28.74 mi)	Monorail
	Wuxi Metro	114.8 km (71.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Xiamen Metro	98.4 km (61.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Xi'an Metro	370.2 km (230.0 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Xuzhou Metro	64.35 km (39.99 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Zhengzhou Metro	344.2 km (213.9 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, Tuen Ma line and South Island line
Hong Kong	Mass Transit Railway	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	16.3 km (10.1 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	43.3 km (26.9 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)
Ecuador	Quito Metro	22 km (14 mi)	1,435 mm (4 ft 8+1⁄2 in)
Egypt	Cairo Metro	107.1 km (66.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
Egypt	Cairo Light Rail Transit	70 km (43 mi)	1,435 mm (4 ft 8+1⁄2 in)
Finland	Helsinki Metro	43 km (27 mi)	1,522 mm (4 ft 11+29⁄32 in)
France	Lille Metro	45 km (28 mi)	rubber tires	VAL technology
	Lyon Metro	2.5 km (1.6 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line C rack railway
	Lyon Metro	31.9 km (19.8 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
	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
	Paris Métro	158.8 km (98.7 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
	Paris Métro	83.7 km (52.0 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
	Rennes Metro	23 km (14 mi)	rubber tires	VAL technology
	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)
	Frankfurt U-Bahn	64.9 km (40.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hamburg U-Bahn	106.1 km (65.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hanover Stadtbahn	121 km (75 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Munich U-Bahn	95 km (59 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nuremberg U-Bahn	38.2 km (23.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
Greece	Athens Metro	91.7 km (57.0 mi)	1,435 mm (4 ft 8+1⁄2 in)
Greece	Thessaloniki Metro	9.6 km (6.0 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	38.63 km (24.00 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Bengalaru Metro	73.75 km (45.83 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Chennai Metro	54.15 km (33.65 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Delhi Metro	148.2 km (92.1 mi)	1,676 mm (5 ft 6 in)	Red Line, Yellow Line and Blue Line (1-4 lines)
	Delhi Metro	199.9 km (124.2 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
	Rapid Metro Gurgaon	11.7 km (7.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Hyderabad Metro	67 km (42 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Jaipur Metro	12.1 km (7.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Kanpur Metro	9 km (5.6 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Kochi Metro	27.4 km (17.0 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Kolkata Metro	37.86 km (23.53 mi)	1,676 mm (5 ft 6 in)	Line 1 and Line 3
	Kolkata Metro	9.1 km (5.7 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 2
	Lucknow Metro	23 km (14 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Mumbai Metro	58.8 km (36.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Nagpur Metro	38.21 km (23.74 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Navi Mumbai Metro	11.1 km (6.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Noida Metro	29.7 km (18.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Pune Metro	33.2 km (20.6 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)
	Jakarta LRT	5.8 km (3.6 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Jabodebek LRT	44.5 km (27.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	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)
	Karaj metro	49.5 km (30.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Mashhad Urban Railway	37.5 km (23.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Shiraz Metro	32.5 km (20.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Tabriz Metro	7 km (4.3 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Tehran Metro	224.6 km (139.6 mi)	1,435 mm (4 ft 8+1⁄2 in)	All lines except Line 5
Italy	Brescia Metro	13.7 km (8.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Catania Metro	8.8 km (5.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Genoa Metro	7.1 km (4.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Milan Metro	111.8 km (69.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Naples Metro	20.5 km (12.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Rome Metro	60 km (37 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Turin Metro	15.1 km (9.4 mi)	rubber tires	VAL technology
Japan	Astram Line	18.4 km (11.4 mi)	rubber tires
	Fukuoka City Subway	17.8 km (11.1 mi)	1,067 mm (3 ft 6 in)	Kūkō Line and Hakozaki Line
	Fukuoka City Subway	13.6 km (8.5 mi)	1,435 mm (4 ft 8+1⁄2 in)	Nanakuma Line
	Kobe Municipal Subway	38.1 km (23.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Kyoto Municipal Subway	31.2 km (19.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	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
	Nagoya Municipal Subway	40 km (25 mi)	1,067 mm (3 ft 6 in)	Tsurumai Line, Sakura-dōri Line and Kamiiida Line
	Osaka Metro	129.9 km (80.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Sapporo Municipal Subway	48.0 km (29.8 mi)	rubber tires
	Sendai Subway	14.8 km (9.2 mi)	1,067 mm (3 ft 6 in)	Namboku Line
	Sendai Subway	13.9 km (8.6 mi)	1,435 mm (4 ft 8+1⁄2 in)	Tōzai Line
	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
	Tokyo Metro	41.7 km (25.9 mi)	1,435 mm (4 ft 8+1⁄2 in)	Ginza Line and Marunouchi Line
	Tokyo Metro	153.4 km (95.3 mi)	1,067 mm (3 ft 6 in)	All lines except Ginza Line and Marunouchi Line
	Tokyo Monorail	17.8 km (11.1 mi)	Monorail
	Rinkai Line (Tokyo)	12.2 km (7.6 mi)	1,067 mm (3 ft 6 in)
	Yokohama Municipal Subway	53.4 km (33.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Minatomirai Line (Yokohama)	4.1 km (2.5 mi)	1,067 mm (3 ft 6 in)
Kazakhstan	Almaty Metro	13.4 km (8.3 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
	Busan Metro	12.7 km (7.9 mi)	rubber tires	Line 4
	Daegu Metro	59.8 km (37.2 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 1 and Line 2 (Daegyeong Line not included)
	Daegu Metro	23.9 km (14.9 mi)	Monorail	Line 3
	Daejeon Metro	22.7 km (14.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Gimpo Goldline	23.7 km (14.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Gwangju Metro	20.1 km (12.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Incheon Subway	59.4 km (36.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Seoul Subway	367.5 km (228.4 mi)	1,435 mm (4 ft 8+1⁄2 in)	Lines 1-9
	Ui LRT	11.4 km (7.1 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Sillim Line	7.8 km (4.8 mi)	rubber tires
	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
	Shinbundang Line	33.4 km (20.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Uijeongbu U Line	11.2 km (7.0 mi)	rubber tires	VAL technology
Malaysia	Rapid KL	219.8 km (136.6 mi)	1,435 mm (4 ft 8+1⁄2 in)	All lines except KL Monorail
Malaysia	Rapid KL	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 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
	Mexico City Metro	35.2 km (21.9 mi)	1,435 mm (4 ft 8+1⁄2 in)	Line 12 and Line A
	Monterrey Metro	40 km (25 mi)	1,435 mm (4 ft 8+1⁄2 in)	For all 3 lines. The 5 train models (MM-90X, MM-93, MM-05, MM-20 and Duewag/Talbot MM-80) share the same rail gauge, and can be swapped to serve any of the 3 lines (they are all connected by 2 interchanges).
Netherlands	Amsterdam Metro	44.3 km (27.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
Netherlands	Rotterdam Metro	103.1 km (64.1 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"
Nigeria	Lagos Rail Mass Transit	27 km (17 mi)	1,435 mm (4 ft 8+1⁄2 in)	Blue Line only (Red Line is a commuter rail)
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	39.8 km (24.7 mi)	1,435 mm (4 ft 8+1⁄2 in)
Peru	Lima Metro	39.6 km (24.6 mi)	1,435 mm (4 ft 8+1⁄2 in)
Philippines	Manila Light Rail Transit System	37.3 km (23.2 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	41.3 km (25.7 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	80.1 km (49.8 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)
	Moscow Metro	461.5 km (286.8 mi)	1,524 mm (5 ft)	All lines except Moscow Central Diameters, Moscow Central Circle (a conventional railway numbered as Line 14) and Moscow Monorail (Line 13)
	Moscow Metro	4.7 km (2.9 mi)	Monorail	Moscow Monorail (Line 13)
	Nizhny Novgorod Metro	21.6 km (13.4 mi)	1,524 mm (5 ft)
	Novosibirsk Metro	15.9 km (9.9 mi)	1,524 mm (5 ft)
	Saint Petersburg Metro	124.8 km (77.5 mi)	1,524 mm (5 ft)
	Samara Metro	11.6 km (7.2 mi)	1,524 mm (5 ft)
	Yekaterinburg Metro	12.7 km (7.9 mi)	1,524 mm (5 ft)
Saudi Arabia	Riyadh Metro	176 km (109 mi)	1,435 mm (4 ft 8+1⁄2 in)
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	Light Rail Transit	28.6 km (17.8 mi)	rubber tires
Singapore	Mass Rapid Transit	231 km (144 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
		119.2 km (74.1 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
	Bilbao metro	45.1 km (28.0 mi)	1,000 mm (3 ft 3+3⁄8 in)
	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
	Taipei Metro	127.8 km (79.4 mi)	1,435 mm (4 ft 8+1⁄2 in)	All lines except Wenhu line
	Taipei Metro	25.1 km (15.6 mi)	rubber tires	Wenhu line. VAL technology
	Taichung Metro	16.7 km (10.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	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)
	MRT (Bangkok)	70.6 km (43.9 mi)	1,435 mm (4 ft 8+1⁄2 in)	Blue Line and Purple Line
	MRT (Bangkok)	64.9 km (40.3 mi)	Monorail	Yellow Line and Pink Line
Turkey	Adana Metro	13.5 km (8.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Ankara Metro	67.4 km (41.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Bursaray	39 km (24 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Istanbul Metro	202.8 km (126.0 mi)	1,435 mm (4 ft 8+1⁄2 in)	M1-M11 lines
	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)
	Kharkiv Metro	38.1 km (23.7 mi)	1,524 mm (5 ft)
	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	405.2 km (251.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Docklands Light Railway	38 km (24 mi)	1,435 mm (4 ft 8+1⁄2 in)
	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)
	Baltimore Metro Subway	24.9 km (15.5 mi)	1,435 mm (4 ft 8+1⁄2 in)
	MBTA subway (Boston)	61 km (38 mi)	1,435 mm (4 ft 8+1⁄2 in)	Red Line, Orange Line and Blue Line
	Chicago "L"	165.4 km (102.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	RTA Rapid Transit: Red Line (Cleveland)	31 km (19 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Honolulu Skyline	17.4 km (10.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Los Angeles Metro Rail	28.0 km (17.4 mi)	1,435 mm (4 ft 8+1⁄2 in)	B Line and D Line
	Metrorail (Miami)	39.3 km (24.4 mi)	1,435 mm (4 ft 8+1⁄2 in)
	New York City Subway	380.2 km (236.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	Staten Island Railway	22.5 km (14.0 mi)	1,435 mm (4 ft 8+1⁄2 in)
	PATH	22.2 km (13.8 mi)	1,435 mm (4 ft 8+1⁄2 in)
	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)
	SEPTA (Philadelphia)	20.8 km (12.9 mi)	5 ft 2+1⁄2 in (1,588 mm)	Market–Frankford Line
	PATCO Speedline	22.9 km (14.2 mi)	1,435 mm (4 ft 8+1⁄2 in)
	BART (San Francisco)	186.8 km (116.1 mi)	1,676 mm (5 ft 6 in)
	Washington Metro	208 km (129 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	66.7 km (41.4 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
Vietnam	Hanoi Metro	25.6 km (15.9 mi)	1,435 mm (4 ft 8+1⁄2 in)
Vietnam	Ho Chi Minh City Metro	19.7 km (12.2 mi)	1,435 mm (4 ft 8+1⁄2 in)

^ "Caiet de sarcini - Partea 0 - Specificatie tehnica generala" (PDF) (in Romanian). Metrorex. Archived from the original (PDF) on 18 January 2022. Retrieved 3 July 2023.

[Bucharest-1] "Caiet de sarcini - Partea 0 - Specificatie tehnica generala" (PDF) (in Romanian). Metrorex. Archived from the original (PDF) on 18 January 2022. Retrieved 3 July 2023.

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