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At 250 km/h the tracks have a centre-to-centre distance of 4.5 m (15 ft) (while the first tracks in the 1980s were built with a distance of 4.7 m (15 ft)). The TGV track construction puts both rail tracks into a common concrete block, so they can disregard a safety margin for track displacement. This allows high-speed rail to have a centre-to ...
The track centres can be as closely spaced and as cheap as possible, but maintenance must be done on the side. Signals for bi-directional working cannot be mounted between the tracks, so they must be mounted on the 'wrong' side of the line or on expensive signal bridges. For standard gauge tracks the distance may be 4 metres (13 ft) or less.
The most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two load-bearing rails of a railway track, usually measured at 12.7 millimetres (0.50 inches) to 15.9 millimetres (0.63 inches) below the top of the rail head in order to clear worn corners and allow for rail heads having sloping ...
First railway line by country. Europe was the epicenter of rail transport and has today one of the densest networks (an average of 46 km (29 mi) for every 1,000 km 2 (390 sq mi) in the EU as of 2013). [10]
In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway lines is the number of rails in place. However, it is sometimes necessary for track to carry railway vehicles with wheels matched to two different gauges.
In continental Europe, France and Belgium adopted a 1,500 mm (4 ft 11 + 1 ⁄ 16 in) gauge (measured between the midpoints of each rail's profile) for their early railways. [22] The gauge between the interior edges of the rails (the measurement adopted from 1844) differed slightly between countries, and even between networks within a country ...
A railway track (CwthE and UIC terminology) or railroad track (NAmE), also known as permanent way (CwthE) [1] or "P Way" (BrE [2] and Indian English), is the structure on a railway or railroad consisting of the rails, fasteners, sleepers (railroad ties in American English) and ballast (or slab track), plus the underlying subgrade.
This article provides a list of operational and under construction (or approved) high-speed rail networks, listed by country or region. While the International Union of Railways defines high-speed rail as public transport by rail at speeds of at least 200 km/h (124 mph) for upgraded tracks and 250 km/h (155 mph) or faster for new tracks, this article lists all the systems and lines that ...
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