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When American railroad tracks extended to the point that they began to interconnect, it became clear that a single nationwide gauge would be beneficial. Where different gauges meet, there is a "break of gauge". To overcome that problem, special compromise cars were able to run 4 ft 10 in (1,473 mm) and standard gauge track. [18]
Modern national railroad network; see Track gauge in the United States; The Washington Metro uses 4 ft 8 + 1 ⁄ 4 in (1,429 mm) gauge, which is 6 mm (0.24 in) narrower than standard gauge. The Bay Area Rapid Transit system uses 5 ft 6 in (1,676 mm). The San Francisco cable car system uses 3 ft 6 in (1,067 mm).
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.
The first American locomotive at Castle Point in Hoboken, New Jersey, c. 1826 The Canton Viaduct, built in 1834, is still in use today on the Northeast Corridor.. Between 1762 and 1764 a gravity railroad (mechanized tramway) (Montresor's Tramway) was built by British Army engineers up the steep riverside terrain near the Niagara River waterfall's escarpment at the Niagara Portage in Lewiston ...
National Railway Museum, Port Adelaide: 470 mm 18 + 1 ⁄ 2 in: United States Travel Town Museum miniature railway 483 mm 19 in: Isle of Man: Great Laxey Mine Railway: United States: Swanton Pacific Railroad: 495 mm: 19 + 1 ⁄ 2 in: England Ayle Colliery mine railway, Athole G. Allen Ltd. Closehouse Barytes Mine railway [19]
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 ...
1890 map of the national rail network. In United States railroading, the term national rail network, sometimes termed "U.S. rail network", [1] refers to the entire network of interconnected standard gauge rail lines in North America.
The National Railroad Passenger Corporation, doing business as Amtrak (/ ˈ æ m t r æ k /; reporting marks AMTK, AMTZ), is the national passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous U.S. states and 3 Canadian provinces. Amtrak is a portmanteau of the words America and track.