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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 Riyadh Metro is the longest driverless metro in the world. A station of the Guangzhou Metro in 2005 Mabillon station, part of Line 10 of the Paris Métro in 2009. The term Metro is the most commonly used term for underground rapid transit systems used by non-native English speakers. [18]
The Lockheed Martin/Boeing F-22 Raptor is an American twin-engine, all-weather, supersonic stealth fighter aircraft.As a product of the United States Air Force's Advanced Tactical Fighter (ATF) program, the aircraft was designed as an air superiority fighter, but also incorporates ground attack, electronic warfare, and signals intelligence capabilities.
The seven deep-level lines have the exclusive use of tracks and stations along their routes with the exceptions of the Piccadilly line, which shares track with the District line, between Acton Town and Hanger Lane Junction, and with the Metropolitan line, between Rayners Lane and Uxbridge; and the Bakerloo line, which shares track with London ...
Surface track accounts for about 46 miles (74 km) of the total, and aerial track makes up 9 miles (14 km). [78] The system operates on a track gauge of 4 ft 8 + 1 ⁄ 4 in ( 1,429 mm ), which is 1 ⁄ 4 inch (6.4 mm) narrower than 4 ft 8 + 1 ⁄ 2 in ( 1,435 mm ) standard gauge but within the tolerance of standard-gauge railways .