Originally, various track gauges were used in the United States. Some railways, primarily in the northeast, used standard gauge of 4 ft 8+1⁄2 in (1,435 mm); others...

A standard-gauge railway is a railway with a track gauge of 1,435 mm (4 ft 8+1⁄2 in). The standard gauge is also called Stephenson gauge (after George...

In rail transport, track gauge is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible...

Standard gauge was favored for railway construction in the United States, although a fairly large narrow-gauge system developed in the Rocky Mountains...

Track gauge in Canada is standard gauge of 4 ft 8+1⁄2 in (1,435 mm), except for Toronto transit systems and the White Pass and Yukon Route. Rail lines...

railway track gauge of 5 ft (1,524 mm) first appeared in the United Kingdom and the United States. This gauge became commonly known as "Russian gauge", because...

Broad gauge of 1,520 mm (4 ft 11+27⁄32 in), more known as Russian gauge, is the dominant track gauge in former Soviet Union countries (CIS states, Baltic...

track gauges by size. A gauge is measured between the inner faces of the rails. For ridable miniature railways and minimum gauge railways, the gauges...

variable gauge system allows railway vehicles in a train to travel across a break of gauge between two railway networks with different track gauges. For through...

Gauge conversion is the changing of one railway track gauge (the distance between the running rails) to another. If tracks are converted to a narrower...