Queensland, Tasmania, Western Australia and parts of South Australia adopted 1,067 mm (3 ft 6 in) gauge to cover greater distances at lower costs. Most industrial railways are built to 610 mm (2 ft) gauge. Three different rail gauges are currently in wide use in Australia, and there is little prospect of full standardisation.
In 1865, the Queensland Railways was the first mainline narrow gauge railway in the world. Its tracks would eventually extend to around 9000 km. Queensland Rail operates the QR Tilt Train, with a maximum speed of 165 km/h. This train currently holds the Australian Railway Speed Record of 210.7 km/h. Queensland also has extensive sugar cane tramways of 2 ft (610 mm) gauge.
Following the success of the narrow gauge in Queensland, several narrow gauge lines were built in South East Australia. From the 1920s onwards several of these were converted to broad gauge. Inspired by the success of the narrow gauge in Queensland, Western Australia adopted the same gauge. Until closure in 1958 Perth had the only narrow gauge tramway network of any considerable extent in mainland Australia.
*All historical information taken from Wikipedia for educational purposes only.