5 ft 3 in gauge railways

Railways with track gauge of 5 ft 3 in (1,600 mm) are broad gauge railways, currently in use in Australia, Brazil and Ireland.

States of South Australia, Victoria (Victorian broad gauge), New South Wales (a few lines built by, and connected to, the Victorian rail system) and Tasmania, Australia (one line, Deloraine to Launceston, opened in 1871, partly converted to dual gauge, and then converted to 3 ft 6 in (1,067 mm) in 1888). The 125 km (77.7 mi) long Oaklands railway line, which runs into New South Wales from Victoria, was converted to standard gauge in 2009. The project was relatively easy because the line has wooden sleepers. 200 km (124.3 mi) of the North East line, Victoria was converted to standard gauge in 2008–2011, meaning a double track standard gauge line was created between Seymour and Albury. The current network is 4,017 km or 2,496 mi, 10% of the total Australian rail network.

Lines connecting the states of Rio de Janeiro, São Paulo and Minas Gerais; E.F.Carajás in Pará and Maranhão states, and Ferronorte in Mato Grosso and Mato Grosso do Sul states. Used in older Metro systems. Although the metre gauge network is almost 5 times longer, Irish gauge is considered the standard by ABNT. The current network is 4,057 km or 2,521 mi, 15% of the total Brazilian network.

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