Metre-gauge railways (US: meter-gauge railways) are narrow-gauge railways with track gauge of 1,000 mm (3 ft 3+3⁄8 in) or 1 metre.[1]
Metre gauge is used in around 95,000 kilometres (59,000 mi) of tracks around the world.[citation needed] It was used by several European colonial powers including France, Britain and Germany in their colonies. In Europe, large metre-gauge networks remain in use in Switzerland, Spain and many European towns with urban trams, but most metre-gauge local railways in France, Germany and Belgium closed down in the mid-20th century, although some still remain. With the revival of urban rail transport, metre-gauge light metros were built in some cities. The slightly-wider 1,009 mm (3 ft 3+23⁄32 in) gauge is used in Sofia. Another similar gauge is 3 ft 6 in (1,067 mm).