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The actual overturning speed of a train is much higher than the limits set by the speed formula, which is largely in place for passenger comfort. There is no hard maximum unbalanced superelevation for European railways, some of which have curves with over 11 inches (280 mm) of unbalanced superelevation to permit high-speed transportation. [15]
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 ...
Authorities in the United States maintain various definitions of high-speed rail. The United States Department of Transportation, an entity in the executive branch, defines it as rail service with top speeds ranging from 110 to 150 miles per hour (180 to 240 km/h) or higher, [10] while the United States Code, which is the official codification of Federal statutes, defines it as rail service ...
For example, if a curve with standard-gauge rail can allow speed up to 145 km/h (90 mph), the same curve with narrow-gauge rail can only allow speed up to 130 km/h (81 mph). [ 12 ] In Japan and Queensland, recent permanent-way improvements have allowed trains on 3 ft 6 in ( 1,067 mm ) gauge tracks to exceed 160 km/h (99 mph).
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Countries with defunct rail networks [88] Country Comment ISO 3166-1 Antigua and Barbuda: Had agricultural / industrial lines 028 Bahamas: Had a plantation railway 044 Barbados: Had a public railway. Has a 3 km tourist line opened in 2019. 052 Belize: Had one public railway and a number of private lines 084 Brunei
The highest posted speed limit in the country is 85 mph (137 km/h) and can be found only on Texas State Highway 130, a toll road that bypasses the Austin metropolitan area for long-distance traffic. The highest speed limit for undivided roads is 75 mph (121 km/h) in Texas. Undivided road speed limits vary greatly by state.
A-train: Hitachi Rail: distributed 25 kV 50 Hz AC 750 V DC (3rd rail) 225 (140 mph) 225 (140 mph) 252 (157 mph) [4] 2009 BR Class 397: TransPennine Express: CAF Civity: CAF: distributed 25 kV 50 Hz AC 201 (125 mph) 201 (125 mph) 2019 BR Class 800: Great Western Railway London North Eastern Railway: A-train: Hitachi Rail: distributed 25 kV 50 Hz AC