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5 ft 6 in (1,676 mm) is a broad track gauge, used in India, Pakistan, western Bangladesh, Sri Lanka, Argentina, Chile, and on BART in the San Francisco Bay Area. In North America, it is called Indian, Provincial, Portland, or Texas gauge. In Argentina and Chile, it is known as "trocha ancha" (Spanish for "broad gauge").
Cross-section of 4-rail dual-gauge track (standard and metre gauge/ narrow gauge) (click to enlarge) Cross-section of Australian dual-gauge track – 1600 mm (5 ft 3 in) and 1435 mm (4 ft 8 + 1 ⁄ 2 in) gauges (click to enlarge) Mixed gauge track at Sassari, Sardinia: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge and 950 mm (3 ft 1 + 3 ⁄ 8 in)
Comparison of different gauges in India with standard gauge Project Unigauge , started on 1 April 1992, [ 1 ] is an ongoing effort by Indian Railways to convert and unify almost all rail gauges in India to 1,676 mm ( 5 ft 6 in ) broad gauge .
The large network of narrow-gauge sugar cane light railways, almost all 610 mm (2 ft) gauge, is not shown, Rail gauge in Australia. Rail gauge world Track gauge Rail gauge world Map Rail gauge world Map, 600mm. to 1676 mm. Rail gauge world Map, 597 mm. to 2140 mm. Triple-gauge track on turntable, Gladstone, South Australia.
This is a list of former and current narrow-gauge railways in India. All railways except the heritage ones are closed or under conversion/are converted to the nation-wide standard 5 ft 6 in ( 1,676 mm ) gauge, under Project Unigauge .
The American gauges converged, as the advantages of equipment interchange became increasingly apparent. Notably, all the 5 ft (1,524 mm) broad gauge track in the South was converted to "almost standard" gauge 4 ft 9 in (1,448 mm) over the course of two days beginning on 31 May 1886. [21] See Track gauge in the United States.
Different gauges in use in India Track. As of 31 March 2023, Indian railway network spanned 68,584 km (42,616 mi) in route length. [1] Track sections are rated for ...
† Converted from narrow or meter gauges ‡ Under construction or under upgradation Speed Group B lines: up to 130 km/h (81 mph) Group A lines: up to 160 km/h (99 mph) Note. While this article may not list all railway lines of India, the most significant ones which have a dedicated Wikipedia article are listed here.