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London Underground 1995 Stock
The London Underground 1995 Stock is a type of rolling stock used on the Northern line of the London Underground. A total of 106 six-car trains were built, entering service between June 1998 and April 2001, replacing the 1959 Stock, 1962 Stock and 1972 Stock. They are very similar to the 1996 Stock used on the Jubilee line. History In the early 1990s, one aspect of work to comprehensively refurbish the Northern line involved the replacement of the 1959 Stock, 1962 Stock and 1972 Stock trains in use at the time. In April 1995, London Underground and GEC Alsthom (later Alstom) signed a Private Finance Initiative (PFI) deal worth £400m to provide 106 six-car trains. Unlike previous rolling stock contracts on the Underground, GEC Alsthom were contracted to design, build and finance the new trains - as well as maintain the trains for at least a 20 year period (extendable to 36 years). London Underground then pays Alstom depending on the availability and reliability of the trains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alstom
Alstom SA is a French multinational rolling stock manufacturer operating worldwide in rail transport markets, active in the fields of passenger transportation, signalling, and locomotives, with products including the AGV, TGV, Eurostar, Avelia and New Pendolino high-speed trains, in addition to suburban, regional and metro trains, and Citadis trams. Alsthom (originally Als-Thom) was formed by a merger between Compagnie Française Thomson-Houston and the electric engineering division of Société Alsacienne de Constructions Mécaniques in 1928. Significant later acquisitions included the Constructions Electriques de France (1932), shipbuilder Chantiers de l'Atlantique (1976), and parts of ACEC (Belgium, late-1980s). A merger with parts of the General Electric Company (UK) formed GEC Alsthom in 1989. Throughout the 1990s, the company expanded its holdings in the rail sector, via the acquisition of German rolling stock manufacturer Linke-Hofmann-Busch and Italian rail signall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moquette
Moquette, derived from the French word for carpet, is a type of woven pile fabric in which cut or uncut threads form a short dense cut or loop pile. As well as giving it a distinctive velvet-like feel, the pile construction is particularly durable, and ideally suited to applications such as public transport. Its upright fibres form a flexible, non-rigid surface, which are constantly displaced to give durability and anti-stain benefits. Traditional moquette fabrics are made from a wool nylon face with an interwoven cotton backing. Origin Moquette originated in France, where it was woven by hand. The standard width was a Flemish ell of 27 inches. There were two finishes: moquette ''velouté'', which had a cut pile like English Wilton, and moquette ''bouclé'', which had an uncut pile like Brussels carpet. It is still woven in Yorkshire using traditional techniques. A long-standing moquette manufacturer is Holdsworth Fabrics, which dates back to 1822. Examples The most famous moqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morden Depot
Morden Depot is a British rolling stock depot on the London Underground Northern line, and is located to the south of Morden Underground station. It was opened in 1926, when the City and South London Railway (C&SLR) was extended from Clapham Common to Morden. History In 1913, the City and South London Railway (C&SLR) and the London Electric Railway (LER) were granted authorisation by separate Acts of Parliament to carry out works on their underground routes. The City and South London Railway needed to enlarge its tunnels to accommodate larger rolling stock and the London Electric Railway obtained permission to construct tunnels to connect the C&SLR at Euston to its Hampstead Tube station at Camden Town. The work was delayed by the onset of the First World War and both companies obtained further Acts of Parliament to extend the time limits allowed for the works. Increases in the costs of materials and labour following the war meant that building and maintaining underground railw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golders Green Tube Station
Golders Green is a London Underground station in Golders Green, north London. The station is on the Edgware branch of the Northern line between Brent Cross and Hampstead stations. It is in Travelcard Zone 3 and is the first surface station on the Edgware branch when heading north. The station is located at the crossroads of Finchley Road ( A598) and Golders Green Road/North End Road ( A502). The station exit is adjacent to Golders Green bus station; a former exit to Finchley Road is now closed. Adjacent to the station is the Golders Green Hippodrome, home to the BBC Concert Orchestra for many years and now the headquarters of a religious organisation. History Golders Green station was opened by the Charing Cross, Euston & Hampstead Railway (CCE&HR, now part of the Northern line) on 22 June 1907. It was one of the railway's two northern terminals (the other being at Archway) and was also the site of the railway's depot. At the beginning of the 20th century Golders Green was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Private Finance Initiative
The private finance initiative (PFI) was a United Kingdom government procurement policy aimed at creating "public–private partnerships" (PPPs) where private firms are contracted to complete and manage public projects. Initially launched in 1992 by Prime Minister John Major, and expanded considerably by the Blair government, PFI is part of the wider programme of privatisation and financialisation, and presented as a means for increasing accountability and efficiency for public spending. PFI was controversial in the UK. In 2003, the National Audit Office felt that it provided good value for money overall; according to critics, PFI has been used simply to place a great amount of debt "off-balance-sheet". In 2011, the parliamentary Treasury Select Committee recommended: In October 2018, the then-chancellor Philip Hammond announced that the UK government would no longer use PFI; however, PFI projects will continue to operate for some time to come. In 2021, Robert Naylor warned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selective Door Operation
Selective door operation (SDO), also known as selective door opening, is a mechanism employed primarily on trains (although buses with multiple doors also generally have this feature) that allows the driver or conductor/guard to open the doors of a train separately. Selective Door Operation enables trains to call at a station where the platform is shorter than the train. Some doors can be prevented from opening to ensure that passengers do not disembark from any carriages not standing at the platform. The term Selective Door Operation is used mainly in the United Kingdom; some train operating companies used the term ‘Door De-Select’. A version of this is used in other countries and on other rail systems such as the London Underground. UK variations In the UK various trains, either multiple units or coaches, have variations of the selective door operating system. This usually depends on what the specific train operating company and/or train leasing company required, either at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passenger Information System
A passenger information system, or passenger information display system, is an automated system for supplying users of public transport with information about the nature and the state of a public transport service through visual, voice or other media. It is also known as a customer information system or an operational information system. Among the information provided by such systems, a distinction can be drawn between: * Static or schedule information, which changes only occasionally and is typically used for journey planning prior to departure. * Real-time information, derived from automatic vehicle location systems and changes continuously as a result of real-world events, which is typically used during the course of a journey (primarily how close the service is running to time and when it is due at a stop, as well as incidents that affect service operations, platform changes, etc.). Static information has traditionally been made available in printed form though route netw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light-emitting Diode
A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device. Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Early LEDs were often used as indicator lamps, replacing small incandescent bulbs, and in seven-segment displays. Later developments produced LEDs available in visible, ultraviolet (UV) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folding Seat
A folding seat is a seat that folds away so as to occupy less space. When installed on a transit bus, it makes room for a wheelchair or two. When installed on a passenger car, it provides extra seating. In churches, it may have a projection called a misericord, which offers some support to a person standing in front when the seat is folded. Folding seats may also be found in stadiums, arenas, theaters and auditoriums to facilitate entry and exit. Some folding seats in rapid transit may fold-down rather than fold up. Gallery File:1995 stock folding seats.JPG, Folding seats on the London Underground 1995 Stock File:Odakyu 3000 Folding Seat.png, Folding seat (foldaway bench) in a passenger car of the Odakyu 3000 series File:Wall chair - NÄL hospital 1.jpg, Folding seat in a corridor in NÄL hospital, Sweden File:Columbia City Cinema main hall.jpg, Main auditorium, Columbia City Cinema, Seattle, US File:Folding seat on Awa-maru ordinary cabin.JPG, Folding seat on Awa Maru o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Suspension
Air suspension is a type of vehicle suspension powered by an electric or engine-driven air pump or compressor. This compressor pumps the air into a flexible bellows, usually made from textile-reinforced rubber. Unlike hydropneumatic suspension, which offers many similar features, air suspension does not use pressurized liquid, but pressurized air. The air pressure inflates the bellows, and raises the chassis from the axle. Overview Air suspension is used in place of conventional steel springs in heavy vehicle applications such as buses and trucks, and in some passenger cars. It is widely used on semi trailers and trains (primarily passenger trains). The purpose of air suspension is to provide a smooth, constant ride quality, but in some cases is used for sports suspension. Modern electronically controlled systems in automobiles and light trucks almost always feature self-leveling along with raising and lowering functions. Although traditionally called air bags or air bellows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bogie
A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport. A bogie may remain normally attached (as on many railroad cars and semi-trailers) or be quickly detachable (as the dolly in a road train or in railway bogie exchange); it may contain a suspension within it (as most rail and trucking bogies do), or be solid and in turn be suspended (as most bogies of tracked vehicles are); it may be mounted on a swivel, as traditionally on a railway carriage or locomotive, additionally jointed and sprung (as in the landing gear of an airliner), or held in place by other means (centreless bogies). In Scotland, the term is used for a child’s (usually home-made) wooden cart. While ''bogie'' is the preferred spelling and first-listed variant in various dictionaries, bogey and bogy are also used. Rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate Turn-off Thyristor
A gate turn-off thyristor (GTO) is a special type of thyristor, which is a high-power (.e.g. 1200V AC) semiconductor device. It was invented by General Electric. GTOs, as opposed to normal thyristors, are fully controllable switches which can be turned on and off by their gate lead. Device description Normal thyristors (silicon-controlled rectifiers) are not fully controllable switches (a "fully controllable switch" can be turned on and off at will). Thyristors can only be turned on using the gate lead, but cannot be turned off using the gate lead. Thyristors are switched on by a gate signal, but even after the gate signal is de-asserted (removed, reverse biased), the thyristor remains in the on state until a turn-off condition occurs (which can be the application of a reverse voltage to the terminals or a decrease of the forward current below a certain threshold value known as the "holding current"). Thus, a thyristor behaves like a normal semiconductor diode after it is turned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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