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The tallest U.S. president was Abraham Lincoln at 6 feet 4 inches (193 centimeters), while the shortest was James Madison at 5 feet 4 inches (163 centimeters). Donald Trump , the current president, is 6 feet 3 inches (190 centimeters) according to a physical examination summary from February 2019.
This is a category for all broad gauge railways built with a track gauge of 6 ft (1,829 mm). Subcategories This category has the following 4 subcategories, out of 4 total.
Some railways, primarily in the northeast, used standard gauge of 4 ft 8 + 1 ⁄ 2 in (1,435 mm); others used gauges ranging from 2 ft (610 mm) to 6 ft (1,829 mm). As a general rule, southern railroads were built to one or another broad gauge, mostly 5 ft ( 1,524 mm ), while northern railroads that were not standard-gauge tended to be narrow-gauge.
By 1922, 80 percent of all new coal mines in the United States were being developed using 3 ft 6 in (1,067 mm) (42 inch) gauge trackage, and the American Mining Congress recommended this as a standard gauge for coal mines, using a 42-inch (1,067 mm) wheelbase and automatic couplers [which?] centered 10 inches (254 mm) above the rail.
5 ft 6 in (1,676 mm) is a broad track gauge, used in India, Pakistan, western Bangladesh, Sri Lanka, Argentina, Chile, and on BART (San Francisco Bay Area). In North America, it is called Indian , Provincial , Portland , or Texas gauge .
Dual gauge between 1,067 mm (3 ft 6 in) gauge and another similar gauge can make these bonus gauges. 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge, 1,372 mm (4 ft 6 in), (4 ft 6 in gauge railway) and; 1,668 mm (5 ft 5 + 21 ⁄ 32 in) 1,676 mm (5 ft 6 in) (The maximum bonus gauge from 1,000 mm (3 ft 3 + 3 ⁄ 8 in) meter gauge gauntlet tracks).
The San Francisco cable car system is the last manually-operated cable car system in the world.. A list of 3 ft 6 in (1,067 mm) gauge railways in the United States.Apart from historical railways, it is commonly used in underground coal mines.
The 4 ft 6 in (1,372 mm) track gauge, also called the Scotch gauge, was adopted by early 19th century railways mainly in the Lanarkshire area of Scotland. It differed from the gauge of 4 ft 8 in ( 1,422 mm ) that was used on some early lines in England .