computerized signalling equipment

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• North American railway signaling — For the actual physical signals, see North American railroad signals. Standards for North American railway signaling in the United States are issued by the Association of American Railroads (AAR), which is a trade association of the railroads of… …   Wikipedia

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• Rail transport operations — A railway can be broken down into two major components. Basically these are the items which move , the rolling stock, that is the locomotives, passenger carrying vehicles (coaches), freight carrying vehicles (goods wagons/freight cars) and those… …   Wikipedia

• Centralized traffic control — (CTC) is a signalling system used by railroads. The system consists of a centralized train dispatcher s office that controls railroad switches in the CTC territory and the signals that railroad engineers must obey in order to keep the traffic… …   Wikipedia

• Direct traffic control — (DTC) is a system for authorizing track occupancy used on some railroads instead of or in addition to signals. It is known as direct traffic control because the train dispatcher gives track authority directly to the train crew via radio, as… …   Wikipedia

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• Signals intelligence operational platforms by nation — This article is a subset article under the main article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with current signals… …   Wikipedia

• Tell-tale (automotive) — A group of tell tales A tell tale (or idiot light, especially in North America[1]) is an indicator of the status or malfunction of a system within a motor vehicle. Tell tales consist of a light bulb or an LED which lights up a symbol or text… …   Wikipedia