"Semaphore signal" redirects here. For other signals sent using semaphore, see Semaphore.
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Upper quadrant semaphore signals at Castleton East Junction in EnglandGerman semaphore distant (left) and home (right) signal exhibition in Steinfurt, Germany
Railway semaphore signal is one of the earliest forms of fixed railway signals. This semaphore system involves signals that display their different indications to train drivers by changing the angle of inclination of a pivoted 'arm'. Semaphore signals were patented in the early 1840s by Joseph James Stevens, and soon became the most widely used form of mechanical signal. Designs have altered over the intervening years, and colour light signals have replaced semaphore signals in most countries, but in a few they remain in use.
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Railwaysemaphoresignal is one of the earliest forms of fixed railwaysignals. This semaphore system involves signals that display their different indications...
Semaphore (lit. 'apparatus for signalling'; from Ancient Greek σῆμα (sêma) 'mark, sign, token', and Greek -φόρος (-phóros) 'bearer, carrier') is the use...
British railwaysignals. When describing an older semaphore, "on" refers to a signal arm in the horizontal position, and "off" means a signal raised upwards...
The current flag semaphore system uses two short poles with square flags, which a signal person holds in different positions to signal letters of the alphabet...
Control Signal System Gantry Institution of RailwaySignal Engineers Railroad chronometer Rail sabotage Railroad switch RailwaysemaphoresignalRailway slide...
practical terms made the semaphore technically obsolete. Semaphoresignals have been almost completely replaced by light signals in North America, but they...
Germany's railway network means that different systems are likely to remain in use for many years to come. Even semaphoresignals and mechanical signal boxes...
state's railway network and connected private tracks. The first signalling system on the Norwegian railway system was a mechanically operated semaphore system...
The signalling system used on the standard-gauge railway network in Sweden is based on that of the traditional mechanical semaphoresignals. Currently...
position signal areas, to give drivers an indication of the aspect of the next three position signal. Semaphoresignals were used on the very first railway lines...
information by means of visual signals (a form of optical communication). There are two main types of such systems; the semaphore telegraph which uses pivoted...
The application of railwaysignals on a rail layout is determined by various factors, principally the location of points of potential conflict, as well...
State Railways had their own Bavarian railwaysignals for decades until they were gradually replaced by Deutsche Reichsbahn semaphoresignals following...
An axle counter is a system used in railwaysignalling to detect the clear or occupied status of a section of track between two points. The system generally...
complexity of a signal box was no longer limited by the distance a mechanical lever could work a set of points or a semaphoresignal via a direct physical...
with semaphoresignals on the Tsugaru Railway Line, the Fukushima Rinkai Railway Main Line and the Niigata-Higashi industrial line. A home signal (場内信号機...
The first railwaysignalling in Greece was installed on the Athens–Piraeus Railway at the turn of the 20th century, when semaphores and boards were added...
Semaphorerailway line was a railway line in the Australian state of South Australia located in the north-west of Adelaide servicing the suburbs of Semaphore...
The current French railwaysignalling system is in force on the Réseau Ferré de France (now SNCF Réseau) since 1930, when the code Verlant was applied...
Electro-Motive Diesel... "Progress Rail buys Coast to Coast Signal Engineering". Railway Gazette International. 22 December 2010. Archived from the original...
early British semaphoresignals, along with the practice of running on the left side on double track main lines. Consequently, signals are placed on the...
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