steel-rail obstacle

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• Traffic barrier — Traffic barriers keep vehicles within their roadway and prevent vehicles from colliding with dangerous obstacles. Traffic barriers installed at the road side also prevent errant vehicles from traversing steep (non recoverable) slopes. Traffic… …   Wikipedia

• Ewing System — The Ewing System was a system for balancing monorails developed by British inventor W. J. Ewing in the last part of the 19th century. The Ewing System places wheels of the train on that a single steel rail. The system had been proposed in 1868 by …   Wikipedia

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• Derby Midland railway station — Infobox UK station name = Derby Midland manager = East Midlands Trains locale = Derby borough = Derby code = DBY usage0405 = 2.624 usage0506 = 2.621 usage0607 = 2.860 platforms = 6 start = 1839 Partially rebuilt 1952 and 1985 Major renovations… …   Wikipedia

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• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

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• India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

• Cantilever bridge — BridgeTypePix type name=Cantilever bridge image title=The Firth of Forth rail bridge with its three double cantilevers sibling names=None descendent names=None ancestor names=Beam bridge, Truss bridge carries=Pedestrians, automobiles, trucks,… …   Wikipedia

• international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …   Universalium