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Double Junction
A double junction is a railway junction where a double-track railway splits into two double track lines. Usually, one line is the main line and carries traffic through the junction at normal speed, while the other track is a branch line that carries traffic through the junction at reduced speed. A number of configurations are possible. At grade Diamond The simplest and oldest arrangement consists of two turnouts (points) and a fixed Diamond crossing. Because the diamond needs to be relatively coarse, say 1 in 8, the curve radius is necessarily small, leading to a speed of perhaps . This type of junction is common on street-running tramways, where speeds are quite low and junction must fit into the available road space. Because the points are close together, the entire junction can be controlled by the mechanical point rodding of a single signal box. Signal passed at danger (SPAD) protection — A train from R to P with 12 points reverse is protected from a train fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harris Park Railway Station
Harris Park railway station is located on the Main Western line, serving the Sydney suburb of Harris Park. It is served by Sydney Trains T1 Western Line T2 Inner West & Leppington Line and T5 Cumberland Line services. History Harris Park station opened in the late 1800s. Originally built as two side platforms, both were rebuilt as island platforms during the quadruplication of the Granville to Westmead line in the mid-1980s. On 2 November 1996, the Harris Park to Merrylands Y-Link opened allowing direct train operation between these two stations by what is now known as the Cumberland Line The Cumberland Line (numbered T5, coloured magenta) is a commuter rail line operated by Sydney Trains in Sydney, New South Wales, Australia. It connects Schofields and Leppington stations in the western suburbs. Limited services extend from S .... On 30 June 2013, a landslide occurred and a retaining wall collapsed in heavy rain, burying one track and partially covering platfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Junction D With Wide Centres
A double is a look-alike or doppelgänger; one person or being that resembles another. Double, The Double or Dubble may also refer to: Film and television * Double (filmmaking), someone who substitutes for the credited actor of a character * ''The Double'' (1934 film), a German crime comedy film * ''The Double'' (1971 film), an Italian film * ''The Double'' (2011 film), a spy thriller film * ''The Double'' (2013 film), a film based on the Dostoevsky novella * '' Kamen Rider Double'', a 2009–10 Japanese television series ** Kamen Rider Double (character), the protagonist in a Japanese television series of the same name Food and drink * Doppio, a double shot of espresso * Dubbel, a strong Belgian Trappist beer or, more generally, a strong brown ale * A drink order of two shots of hard liquor in one glass * A "double decker", a hamburger with two patties in a single bun Games * Double, action in games whereby a competitor raises the stakes ** , in contract bridge ** Doub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Double Junction D With Wide Centres
Rail or rails may refer to: Rail transport *Rail transport and related matters *Rail (rail transport) or railway lines, the running surface of a railway Arts and media Film * ''Rails'' (film), a 1929 Italian film by Mario Camerini * ''Rail'' (1967 film), a film by Geoffrey Jones for British Transport Films *'' Mirattu'' or ''Rail'', a Tamil-language film and its Telugu dub Magazines * ''Rail'' (magazine), a British rail transport periodical * ''Rails'' (magazine), a former New Zealand based rail transport periodical Other arts *The Rails, a British folk-rock band *Rail (theater) or batten, a pipe from which lighting, scenery, or curtains are hung Technology *Rails framework or Ruby on Rails, a web application framework *Rail system (firearms), a mounting system for firearm attachments * Front engine dragster *Runway alignment indicator lights, a configuration of an approach lighting system *Rule Augmented Interconnect Layout, a specification for expressing guidelines for prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trains (magazine)
''Trains'' is a monthly magazine about trains and railroads aimed at railroad enthusiasts and railroad industry employees. The magazine primarily covers railroad happenings in the United States and Canada, but has some articles on railroading elsewhere. It is among the 11 magazines published by Kalmbach Media, based in Waukesha, Wisconsin. It was founded as ''Trains'' in 1940 by publisher Al C. Kalmbach and editorial director Linn Westcott. From October 1951 to March 1954, the magazine was named ''Trains and Travel''. Jim Wrinn, a former reporter and editor at the ''Charlotte Observer ''The Charlotte Observer'' is an American English-language newspaper serving Charlotte, North Carolina, and its metro area. The Observer was founded in 1886. As of 2020, it has the second-largest circulation of any newspaper in the Carolinas. I ...'', served as editor from 2004 until his death in 2022. Carl A. Swanson succeeded him. Editors * Al C. Kalmbach, 1940–1948 * Willard V. Anders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axle Counter
An axle counter is a system used in railway signalling to detect the clear or occupied status of a section of track between two points. The system generally consists of a wheel sensor (one for each end of the section) and an evaluation unit for counting the axles of the train both into and out of the section. They are often used to replace a track circuit. Principles and operation An axle counter consists of the axle counter sensor, which detects the individual axles of a train either via either mechanical, electrical or even fibre optic methods, as well as an evaluator, which does the logic of the system and counts the axles into and out of the section. The evaluator may also convert the analogue signal of the axle counter sensor into a digital signal. However, in some cases there is a separate unit which performs this task. The system is set up by having an axle counter sensor installed at each end of a section. As each train axle passes the axle counter sensor at the start o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Circuit
A track circuit is an electrical device used to prove the absence of a train on rail tracks to signallers and control relevant signals. An alternative to track circuits are axle counters. Principles and operation The basic principle behind the track circuit lies in the connection of the two rails by the wheels and axle of locomotives and rolling stock to short an electrical circuit. This circuit is monitored by electrical equipment to detect the absence of the trains. Since this is a safety appliance, fail-safe operation is crucial. Hence the circuit is designed to indicate the presence of a train when failures occur. On the other hand, false occupancy readings are disruptive to railway operations and must be minimized. Track circuits allow railway signalling systems to operate semi-automatically, by displaying signals for trains to slow or stop in the presence of occupied track ahead of them. They help prevent dispatchers and operators from causing accidents, both by info ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Train Protection & Warning System
The Train Protection & Warning System (TPWS) is a train protection system used throughout the British passenger main-line railway network, and in Victoria, Australia. The British Rail Safety and Standards Board's definition is: The purpose of TPWS is to stop a train by automatically initiating a brake demand, where TPWS track equipment is fitted, if the train has: *passed a signal at danger without authority *approached a signal at danger too fast *approached a reduction in permissible speed too fast *approached buffer stops too fast. TPWS is not designed to prevent SPADs but to mitigate the consequences of a SPAD, by preventing a train that has had a SPAD from reaching a conflict point after the signal. A standard installation consists of an on-track transmitter adjacent to a signal, activated when the signal is at danger. A train that passes the signal will have its emergency brake activated. If the train is travelling at speed, this may be too late to stop it before the poin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Train Protection
Automatic train protection (ATP) is a type of train protection system which continually checks that the speed of a train is compatible with the permitted speed allowed by signalling, including automatic stop at certain signal aspects. If it is not, ATP activates an emergency brake to stop the train. See also * Advanced Civil Speed Enforcement System * Anti Collision Device * Automatic Warning System * Automatische treinbeïnvloeding (ATB) * British Rail's ATP system * Continuous Automatic Warning System (CAWS) * EBICAB * European Train Control System (ETCS) * Kavach * Positive Train Control (PTC) * Punktförmige Zugbeeinflussung PZB or Indusi is an intermittent cab signalling system and train protection system used in Germany, Austria, Slovenia, Croatia, Romania, Israel, Serbia, on two lines in Hungary, on the Tyne and Wear Metro in the United Kingdom, and forme ... (PZB) * Train Protection & Warning System * Train Warning System References {{ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trap Points
Catch points and trap points are types of turnout which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to derail vehicles which are out of control (known as ''runaways'') on steep slopes. Trap points are used to protect main railway lines from unauthorised vehicles moving onto them from sidings or branch lines. Either of these track arrangements may lead the vehicles into a sand drag or safety siding, track arrangements which are used to safely stop them after they have left the main tracks. A derail is another device used for the same purposes as catch and trap points. Trap points ''Trap points'' are found at the exit from a siding or where a secondary track joins a main line. A facing turnout is used to prevent any unauthorised movement that may otherwise obstruct the main line. The trap points also prevent any damage that may be done by a vehicle passin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton (South Lanarkshire) Rail Accident
On 21 July 1991, two commuter trains crashed just west of Newton railway station in Cambuslang, near Glasgow, Scotland. The junction had been remodelled in the month previous to the crash. Accident At 21.55, 2P55, the 21:55 Newton- Glasgow Central Cathcart Circle service, a British Rail Class 303 driven by Reginald McEwan left the "down" platform at Newton. Meanwhile, 2J66, the 20:55 Balloch-Motherwell, a Class 314 driven by David Scott was crossing from the fast West Coast Main Line tracks through a single-lead junction to enter the "up" platform. The two trains collided head on at the junction, killing both drivers and two passengers and injuring 22. The Class 303 unit overrode the buffer unit of the Class 314 unit and the trains telescoped over one another. The leading coach of the Class 314 was completely destroyed (being cut up at the site) later replaced by a redundant Class 507 driving motor vehicle. People who lived in the area near to the crash described hearin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glasgow Bellgrove Rail Crash
On 6 March 1989, two Class 303 commuter trains crashed on the Springburn branch of the North Clyde Line, just east of Bellgrove station in the East End of Glasgow, Scotland. Driver Mr. Hugh Kennan, aged 62 of Maryhill, and passenger Mr. Robert McCaffrey, aged 58, a retired rail worker from Scotstoun, died in the crash and 53 people were injured. The accident was of a type known as " ding-ding, and away". It was caused primarily by a signal passed at danger A signal passed at danger (SPAD), known in the United States as a stop signal overrun and in Canada as passing a stop signal, is an event on a railway where a train passes a stop signal without authority. In the United States and Canada, this ... (SPAD) in conjunction with the single-lead junction track layout, where two lines converged into one just beyond the platform end and then diverged again – a layout which is simpler to maintain but is vulnerable in the event of a SPAD. This type of junction has been imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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