standard gauge

alternative standard gage

1. uncountablerail transportA track gauge of 56.5 inches (1435 mm).

   The Carnarvonshire Railway was incorporated by an Act of July 29, 1862, with powers to construct a standard-gauge line from the Bangor & Carnarvon at Caernarvon [1958 spelling] to Portmadoc, a distance of 27¾ miles, but only the centre portion, from Penygroes to Afonwen, 11¾ miles, was built.

   1958 September 28, J. M. Dunn, “The Afonwen Line—1”, in Railway Magazine, page 594

   1 more example

   The city began as a local trading centre for north Chinese settlers at the end of the 18th century. It expanded rapidly and from 1905 to 1935 was a major junction and transshipment point between the Russian-owned broad-gauge Chinese Eastern railway and the Japanese-owned standard-gauge South Manchurian railway. Ch’ang-ch’un was equipped with sizable railroad shops and also became the junction for railways extending westward into Inner Mongolia and eastward into northern Korea.

   1964, Norton S. Ginsburg, “CH’ANG-CH’UN”, in Encyclopedia Britannica, volume 5, →OCLC, page 267, column 2