The most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two … See more

The earliest form of railway was a wooden wagonway, along which single wagons were manhandled, almost always in or from a mine or quarry. Initially the wagons were guided by human muscle power; subsequent… See more

Standard gauge is generally known world-wide as being 1,435 mm (4 ft 8+1⁄2 in). Terms such as broad gauge and narrow gauge do not have any fixed meaning beyond being materially wider or narrower than stand… See more

When individual railway companies have chosen different gauges and have needed to share a route where space on the ground is limited, mixed gauge (or dual gauge) track, in which three (sometimes four) rails are support… See more

In rare situations, three different gauges may converge on to a rail yard and triple-gauge track is needed to meet the operational needs of the break-of-gauge station – most commonly where there is insufficient … See more