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Double Track
A double-track railway usually involves running one track in each direction, compared to a single-track railway where trains in both directions share the same track. Overview In the earliest days of railways in the United Kingdom, most lines were built as double-track because of the difficulty of co-ordinating operations before the invention of the telegraph. The lines also tended to be busy enough to be beyond the capacity of a single track. In the early days the Board of Trade did not consider any single-track railway line to be complete. In the earliest days of railways in the United States most lines were built as single-track for reasons of cost, and very inefficient timetable working systems were used to prevent head-on collisions on single lines. This improved with the development of the telegraph and the train order system. Operation Handedness In any given country, rail traffic generally runs to one side of a double-track line, not always the same side a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trams In Stockholm
The Stockholm tramway network forms part of the public transport system in Stockholm, the capital city of Sweden. Beginning with horse trams in 1877, the Stockholm tram network reached its largest extent in 1946. Many of the former suburban tram lines became parts of the Stockholm Metro between the years 1950-1964. In September 1967, in conjunction with the Swedish switch from left-hand to right-hand traffic, the last parts of the once large inner city street running tram network were closed. What little remained of the former network following 1967 were isolated suburban feeder lines to the Metro. However, in 1991 a long heritage line opened to the recreational area Djurgården; and in 2000, the non-radial half-circle line Tvärbanan opened with articulated low floor vehicles connecting an inner ring of Metro and commuter rail stations just outside the inner city proper, with subsequent extensions in 2003 and 2014; and in 2010 the heritage line was extended and converted to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lidingöbanan
Lidingöbanan is a Light-railway line in Stockholm, Sweden, between Ropsten and Gåshaga brygga, serving the southern half of Lidingö island. The Lidingöbanan has its origins in the ''Stockholm-Södra Lidingöns Järnväg'' (Stockholm-Southern Lidingö Railway), proposed by inventor Gustaf Dalén, opened for traffic 1914. It got ferry-less access to Stockholm when the Lidingöbron, Lidingö bridge was opened 1925. Public transportation on Lidingöbanan has always been provided using tram cars, but in the past Lidingöbanan also carried goods traffic. At its largest, Lidingöbanan extended to Humlegården in Stockholm through Stockholms Spårvägar's tramway network, with access to the Värtabanan freight railway track. There was also traffic on a track on the north side of Lidingö island which terminated at Kyrkviken, but that section closed in 1971. Lidingö town centre is now accessible only by bus. Lidingöbanan formally became part of Storstockholms Lokaltrafik, SL's publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Railway Curve Radius
The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions. It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks, determines the maximum safe speed of a curve. The minimum radius of a curve is one parameter in the design of railway vehicles as well as trams; monorails and automated guideways are also subject to a minimum radius. History The first proper railway was the Liverpool and Manchester Railway, which opened in 1830. Like the tram roads that had preceded it over a hundred years, the L&M had gentle curves and gradients. Reasons for these gentle curves include the lack of strength of the track, which might have overturned if the curves were too sharp causing derailments. The gentler the curves, the greater the visibility, thus boosting safety via increased ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railroad Signal
A railway signal is a visual display device that conveys instructions or provides warning of instructions regarding the driver’s authority to proceed. The driver interprets the signal's indication and acts accordingly. Typically, a signal might inform the driver of the speed at which the train may safely proceed or it may instruct the driver to stop. Application and positioning of signals Originally, signals displayed simple stop or proceed indications. As traffic density increased, this proved to be too limiting and refinements were added. One such refinement was the addition of distant signals on the approach to stop signals. The distant signal gave the driver warning that they were approaching a signal which might require a stop. This allowed for an overall increase in speed, since train drivers no longer had to drive at a speed within sighting distance of the stop signal. Under timetable and train order operation, the signals did not directly convey orders to the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passing Loop
A passing loop (UK usage) or passing siding (North America) (also called a crossing loop, crossing place, refuge loop or, colloquially, a hole) is a place on a single line railway or tramway, often located at or near a station, where trains or trams travelling in opposite directions can pass each other. Trains/trams going in the same direction can also overtake, provided that the signalling arrangement allows it. A passing loop is double-ended and connected to the main track at both ends, though a dead end siding known as a refuge siding, which is much less convenient, can be used. A similar arrangement is used on the gauntlet track of cable railways and funiculars, and in passing places on single-track roads. Ideally, the loop should be longer than all trains needing to cross at that point. Unless the loop is of sufficient length to be dynamic, the first train to arrive must stop or move very slowly, while the second to arrive may pass at speed. If one train is too long for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Points (rail)
A railroad switch (), turnout, or ''set ofpoints () is a mechanical installation enabling railway trains to be guided from one track to another, such as at a railway junction or where a spur or siding branches off. The most common type of switch consists of a pair of linked tapering rails, known as ''points'' (''switch rails'' or ''point blades''), lying between the diverging outer rails (the ''stock rails''). These points can be moved laterally into one of two positions to direct a train coming from the point blades toward the straight path or the diverging path. A train moving from the narrow end toward the point blades (i.e. it will be directed to one of the two paths, depending on the position of the points) is said to be executing a ''facing-point movement''. For many types of switch, a train coming from either of the converging directions will pass through the switch regardless of the position of the points, as the vehicle's wheels will force the points to move. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Semaphore Signal
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. Origins The first railway semaphore signal was erected by Charles Hutton Gregory on the London and Croydon Railway (later the London Brighton and South Coast Railway) at New Cross, southeast London, about 1842 on the newly enlarged layout also accommodating the South Eastern Railway. John Urpeth Rastrick claimed to have suggested the idea to Hutton Gregory. The semaphore was afterwards rapidly adopted as fixed manual signals throughout Britain and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Signalling
Railway signalling (), also called railroad signaling (), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them uniquely susceptible to collision. This susceptibility is exacerbated by the enormous weight and inertia of a train, which makes it difficult to quickly stop when encountering an obstacle. In the UK, the Regulation of Railways Act 1889 introduced a series of requirements on matters such as the implementation of interlocked block signalling and other safety measures as a direct result of the Armagh rail disaster in that year. Most forms of train control involve movement authority being passed from those responsible for each section of a rail network (e.g. a signalman or stationmaster) to the train crew. The set of rules and the physical equipment used to accomplish this determine what is known as the ''method of working'' (UK), ''method of operation'' (US) or ''safeworking'' (Aus.). Not all these methods require the use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brough Railway Station
Brough railway station serves the town of Brough in the East Riding of Yorkshire, England. It is managed by TransPennine Express, and also served by Northern, Hull Trains and London North Eastern Railway. The station was originally opened by the Hull and Selby Railway in 1840 and at one time had four tracks passing through. The course of the additional outer tracks (and the two disused platform faces) are still visible, although these were removed in the early 1970s. Facilities There is a ticket office inside the main building which is staffed each day from start of service until 19:45 (18:30 on Sundays) and there is a self-service ticket machine (card only) outside the door available 24 hours a day. There is also a vending machine and a refreshment stall open each morning. There is a waiting room on each platform and step-free access to both is available (to platform 2 via ramps onto the footbridge). Automated public address announcements and digital display screens were up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NS Class 1600
The NS Class 1600 is a type of B′B′ electric locomotive built by Alstom between 1980 and 1983 based on the SNCF Class BB 7200, and in use by the Dutch Railways since 1981. They were styled by the French industrial designer Paul Arzens. The Class 1600 was ordered in 1978, after several types of locomotives were tested in the 1970s. One of those was the SNCF BB 7200, on which the 1600 is based. The 58 locomotives were delivered between 1981 and 1983. As a result of their delivery, the old Class 1000 and Class 1500 units were taken out of service. Thanks to the electronic power control, these locomotives were not only the most economical but also the most powerful locomotives that Dutch Railways had. NS/Railion Class 1600 In 1999 the freight division of NS, NS Cargo, was sold to Deutsche Bahn became part of Railion as Railion Nederland. The locomotives that became the property of Railion kept their old number (1601–1637). No. 1637 was repainted red as an advertisement fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SNCF Class BB 7200
The SNCF Class BB 7200 is a 1.5 kV DC electric locomotive operated by the SNCF in France. It is the DC version of the 'Nez Cassé' family of locomotives built between 1976 and 1985 by Alstom. They are rated for of continuous power. SNCF Class BB 15000 is the AC version while the Class BB 22200 is a dual-voltage version. Another relative is the NS Class 1600 operated in the Netherlands, a DC locomotive based on the BB 7200. Intended primarily for passenger service, increasing numbers are being allocated for freight service with lower-geared bogies as passenger services are taken from locomotive-hauled coaches by TGV services. BB 7200 operations are limited to the French 1.5 kV DC electrified network in southeastern France, from Paris southwards. In 2016 48 were allocated to freight, 58 to intercity passenger service, 50 to regional passenger service, and two to auto-train service. 7209, 7210, 7308 and 7348 have all been destroyed in accidents. The class was originally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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