Rapid transit track gauge

Track gauge

By transport mode

Tram · Rapid transit
Miniature · Scale model

By size (list)



Minimum
Fifteen inch	381 mm	(15 in)

Narrow
600 mm, Two foot	597 mm 600 mm 603 mm 610 mm	(1 ft 11 ¹⁄₂ in) (1 ft 11 ⁵⁄₈ in) (1 ft 11 ³⁄₄ in) (2 ft)
750 mm, Bosnian, Two foot six inch, 800 mm	750 mm 760 mm 762 mm 800 mm	(2 ft 5 ¹⁄₂ in) (2 ft 5 ¹⁵⁄₁₆ in) (2 ft 6 in) (2 ft 7 ¹⁄₂ in)
Swedish three foot, 900 mm, Three foot	891 mm 900 mm 914 mm	(2 ft 11 ³⁄₃₂ in) (2 ft 11 ⁷⁄₁₆) (3 ft)
Metre	1,000 mm	(3 ft 3 ³⁄₈ in)
Three foot six inch, Cape, CAP, Kyōki	1,067 mm	(3 ft 6 in)
Four foot six inch	1,372 mm	(4 ft 6 in)

Standard	1,435 mm	(4 ft 8 ¹⁄₂ in)

Broad
Russian, Five foot	1,520 mm 1,524 mm	(4 ft 11 ²⁷⁄₃₂ in) (5 ft)
Irish	1,600 mm	(5 ft 3 in)
Iberian	1,668 mm	(5 ft 5 ²¹⁄₃₂ in)
Indian	1,676 mm	(5 ft 6 in)
Six foot	1,829 mm	(6 ft)
Brunel	2,140 mm	(7 ft ¹⁄₄ in)

Change of gauge

Break-of-gauge · Dual gauge ·
Conversion (list) · Bogie exchange · Variable gauge

By location

North America · South America · Europe · Australia

Rapid transit track gauge is often 1,435 mm (4 ft 8 ¹⁄₂ in) standard gauge, but also 3 ft 6 in (1,067 mm), 1,000 mm (3 ft 3 ³⁄₈ in), 1,524 mm (5 ft), and 1,676 mm (5 ft 6 in).

Broad gauge

Indian gauge

Delhi Metro uses Indian gauge, but new lines are built to 1,435 mm (4 ft 8 ¹⁄₂ in).

Bay Area Rapid Transit (BART) uses Indian gauge, though most railroad lines in the United States are built to 1,435 mm (4 ft 8 ¹⁄₂ in) gauge.

Russian gauge

Moscow Metro (312 km) uses 1,524 mm (5 ft).

Madrid gauge

Madrid Metro (293 km) uses 1,445 mm (4 ft 8 ⁷⁄₈ in).

Toronto TTC Gauge

The Toronto Subway (68.3 km) uses 1495 mm.^[1]

Standard gauge usage

Standard gauge usage for all lines

Some of the largest subway systems in the world use standard gauge in agreement with the country wide dominant usage for track gauge, e.g.:

Asia: Seoul Metropolitan Subway, Beijing Subway, Shanghai Metro, Mass Rapid Transit, Tehran Metro
Americas: New York City Subway, Mexico City Metro.
Europe: London Underground, Paris Métro.

Some networks use standard gauge while the country wide standard for track gauge is different, e.g.:

Buenos Aires Underground - country uses Indian gauge
Santiago Metro - country uses Indian gauge
RapidKL Rail - country standard is Meter gauge
Manila Light Rail Transit System - country uses 3 ft 6 in (1,067 mm) gauge
Mumbai Metro (planned) - country standard is Indian gauge
Ho Chi Minh City Metro (planned) - country standard is Meter gauge
Bogotá Metro (planned) - country standard is three foot gauge
Train for the vicinities of the city of Bogotá (planned) - country standard is three foot gauge

Standard gauge usage for new lines

In some networks new lines are built to standard gauge while old lines in the network use another gauge, e.g.:

Delhi Metro - old lines use Indian gauge
São Paulo Metro - old lines use Irish gauge, country standard is Meter gauge

Narrow gauge

4 ft 6 in (1,372 mm) gauge

Tokyo (Toei Shinjuku Line)

4 ft (1,219 mm) gauge

Glasgow Subway

3 ft 6 in (1,067 mm) gauge

Majority of Tokyo Metro, and Toei Mita Line
Jakarta Mass Rapid Transit

Meter gauge

Multiple sizes in one network

In some networks multiple gauges are used even amongst lines that are built around the same time, like the Toei Subway which uses three gauges:

3 ft 6 in (1,067 mm) gauge (Toei Mita Line)
4 ft 6 in (1,372 mm) (Toei Shinjuku Line)
Standard gauge (Toei Asakusa Line, Toei Oedo Line)

The Tokyo Metro uses two gauges: standard gauge for the Ginza and Marunouchi Lines, and 3 ft 6 in (1,067 mm) for all other lines.

In other networks, very similar track gauges may be used, as is the case with the Hong Kong MTR (1,432 mm (4 ft 8 ³⁄₈ in) and 1,435 mm (4 ft 8 ¹⁄₂ in)).

References

↑ http://www.ttc.ca/TTC_Business/Materials_and_procurement/Ads_PandS/PDF%20Files/SUPPLY%20A%20GEOMETRIC%20SURVEY%20OF%20TTC%20SUBWAY%20RAIL%20TRACK%20-%20P31BE13.pdf

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