5 ft and 1520 mm gauge railways

Railways with a railway track gauge of 5 ft (1,524 mm) first appeared in the United Kingdom and the United States. This gauge became commonly known as "Russian gauge", because the government of the Russian Empire chose it in 1843. Former areas and states of the Empire have inherited this standard.[1] However in 1970, Soviet Railways re-defined the gauge as 1,520 mm (4 ft 11+2732 in).[2]

With about 225,000 km (140,000 mi) of track, 1,520 mm is the second-most common gauge in the world, after 1,435 mm (4 ft 8+12 in) standard gauge.[3]

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  2. ^ Cite error: The named reference rzd_1520 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference 1520_sp_about was invoked but never defined (see the help page).

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