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High Street Kensington station on the Inner Circle line in London, the world's first circle line. A circle route (also circumference, loop, ring route, ring line or orbital line) is a public transport route following a path approximating a circle or at least a closed curve. Line 10 of the Beijing Subway, the world's second longest circular ...
Too tight a 'crest' curve could result in the train leaving the track as it drops away beneath it; too tight a 'trough' and the train will plough downwards into the rails and damage them. More precisely, the support force R exerted by the track on a train as a function of the curve radius r, the train mass m, and the speed v, is given by
A concrete viewing platform was constructed at the scenic overlook on Woodford-Tehachapi Road in the summer of 2021, allowing railroad enthusiasts to watch trains on the loop at a safe distance from the winding, two-lane roadway. [15] The Tehachapi Depot Museum is located in the nearby town of Tehachapi. [16]
The minimal distance to structures on the side of the track is half of it but that is doubled again for double track lines. As the carriage can sway and bounce within the rail gauge, one adds 100 mm (3.9 in) and with a possible displacement of tracks over time one adds some 250 mm (9.8 in) as a security margin.
A railway spiral rises on a steady curve until it has completed a loop, passing over itself as it gains height, allowing the railway to gain vertical elevation in a relatively short horizontal distance. It is an alternative to a zig-zag, and avoids the need for the trains to stop and reverse direction while ascending. If the train is longer ...
Nearly 100,000 residents travel the 240-mile journey between the two cities each week — and some even more frequently, according to a 2012 study conducted by NYU's Rudin Center for Transportation.
The C69 stock trains were replaced by seven-car S Stock trains, the first running on the Circle line on 2 September 2013. [49] [50] [51] By June 2014 all services were provided by S7 Stock trains. The trains are part of Bombardier's Movia family, [52] and have a top speed of 62 mph (100 km/h). [52]
George Francis Train: 64 days 9 May 1891 12 July 1891 By ships and trains, from Fairhaven, Washington [9] J. Willis Sayre: 54 days 9 hours and 42 minutes 1903 1903 From Seattle, via Trans-Siberian Railway. [12] Andre Jaeger-Schmidt, Henry Frederick, John Henry Mears: 36 2 July 1913 6 August 1913 A combination of steamers, yachts, and trains [13]