absolute block section

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• British absolute block signalling — The principle of the British absolute block system of railway signalling is to facilitate the safe operation of a railway by preventing more than one train from occupying a defined section of route at the same time. This system is used on double… …   Wikipedia

• absolute blocking — Block system Block system (Railroads) A system by which the track is divided into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a… …   The Collaborative International Dictionary of English

• Block system — (Railroads) A system by which the track is divided into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a section or block until the… …   The Collaborative International Dictionary of English

• block system — noun 1. : a system of mountain ranges composed of tilted or uplifted fault blocks compare basin range 2. : a system by which a railroad track is divided into short sections (as of three or four miles) and trains are so run by the guidance of… …   Useful english dictionary

• Signalling block system — Signalling block systems enable the safe and efficient operation of railways, so as to avoid collisions between trains. Block systems are used to control trains between stations and yards, and not normally within them. Any block system is defined …   Wikipedia

• Automatic Block Signal — Basic Automatic Block Signals = Automatic Block Signal, or ABS, systems consist of a series of signals that govern blocks of track between the signals. The signals are automatically activated by the conditions of the block beyond the signal.… …   Wikipedia

• Caesarean section — Intervention A team of obstetricians performing a Caesarean section in a modern hospital. ICD 9 CM …   Wikipedia

• Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …   Wikipedia

• Japanese railway signals — This article explains railway signals in Japan.In Japanese ministerial decree defining technical standard of railway (鉄道に関する技術上の基準を定める省令 Tetsudō ni kansuru gijutsu jō no kijun wo sadameru shōrei), railway signals are defined to indicate… …   Wikipedia

• Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …   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