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Overpass
An overpass, called an overbridge or flyover (for a road only) in the United Kingdom and some other Commonwealth of Nations, Commonwealth countries, is a bridge, road, railway or similar structure that is over another road or railway. An ''overpass'' and ''underpass'' together form a grade separation. Stack interchanges are made up of several overpasses. History The world's first railroad flyover was constructed in 1843 by the London and Croydon Railway at Norwood Junction railway station to carry its atmospheric railway vehicles over the Brighton Main Line. Highway and road In North American usage, a ''flyover'' is a high-level overpass, built above main overpass lanes, or a bridge built over what had been an at-grade intersection. Traffic engineers usually refer to the latter as a ''grade separation''. A flyover may also be an extra ramp added to an existing interchange, either replacing an existing cloverleaf interchange, cloverleaf loop (or being built in place of one) w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
I-73 At I-840 Overpasses Aerial - Facing South (50698132631)
Interstate 73 (I-73) is a north–south Interstate Highway, located within the US state of North Carolina. Currently, there is one continuous section of I-73, totaling , first traversing the U.S. Route 220, U.S. Route 220 (US 220) freeway from Ellerbe, North Carolina, to Interstate 85, I-85 in Greensboro, North Carolina, then along the southwestern segment of the Greensboro Outer Loop from US 220 to Bryan Boulevard, then along a freeway from Bryan Boulevard west then north to US 220 near Summerfield, North Carolina. I-73 was planned to be a much longer corridor, defined by various federal laws to run from Myrtle Beach, South Carolina, to Sault Ste. Marie, Michigan. Once active projects are completed, it will only run from South Carolina to Roanoke, Virginia, where it will end at Interstate 81, I-81. Ohio does not plan to build any part of the highway because the I-73 corridor in that state is already served by existing freeways or four-lane highways t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freeway Interchange
In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, using a system of interconnecting roadways to permit traffic on at least one of the routes to pass through the junction without interruption from crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway (freeway or motorway) or a limited-access divided highway (expressway), though they are sometimes used at junctions between surface streets. Terminology ''Note:'' The descriptions of interchanges apply to countries where vehicles drive on the right side of the road. For left-side driving, the layout of junctions is mirrored. Both North American (NA) and British (UK) terminology is included. ; Freeway juncti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Judge Harry Pregerson Interchange
The Judge Harry Pregerson Interchange is a stack interchange near the Athens and Watts communities of Los Angeles, California, United States. It is the interchange of the following routes: * * The interchange permits traffic entering the interchange in all directions to exit in all directions (unlike, for example, the Hollywood Split and East Los Angeles Interchange). The interchange also contains Metro Green Line tracks, direct HOV and Metro ExpressLanes connectors, the Harbor Transitway, and the Harbor Freeway station for the Green Line and the Transitway, all of which contribute to the towering, imposing structure for which the interchange is known. The interchange is over 130 feet high. Opened with Interstate 105 in 1993, the interchange is named after Harry Pregerson, a longtime federal judge who presided over the lawsuit concerning the I-105 freeway's construction. Layout Motorists entering the interchange on the freeway trunks from all directions have freedom to exi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stack Interchange
A directional interchange, colloquially known as a stack interchange, is a type of grade-separated junction between two controlled-access highways that allows for free-flowing movement to and from all directions of traffic. These interchanges eliminate the problems of weaving, have the highest vehicle capacity, and vehicles travel shorter distances when compared to different types of interchanges. The first directional interchange built in the world was the Four Level Interchange which opened to Los Angeles traffic in 1949. Definition A directional interchange is a grade separated junction between two roads where all turns that require crossing over or under the opposite road's lanes of travel in order to complete the turn utilize ramps that make a direct or semi-direct connection. The difference between direct and semi-direct connections is how much the motorist deviates from the intended direction of travel while on the ramp; direct ramps are shorter and can handle higher t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sydney
Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mountains to the west, Hawkesbury to the north, the Royal National Park to the south and Macarthur to the south-west. Sydney is made up of 658 suburbs, spread across 33 local government areas. Residents of the city are known as "Sydneysiders". The 2021 census recorded the population of Greater Sydney as 5,231,150, meaning the city is home to approximately 66% of the state's population. Estimated resident population, 30 June 2017. Nicknames of the city include the 'Emerald City' and the 'Harbour City'. Aboriginal Australians have inhabited the Greater Sydney region for at least 30,000 years, and Aboriginal engravings and cultural sites are common throughout Greater Sydney. The traditional custodians of the land on which modern Sydney stands are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumberland Highway
The Cumberland Highway is a long urban highway located in Sydney, New South Wales, Australia. The highway links the Pacific Highway (A1/B83) and Pacific Motorway ( M1) at Pearces Corner, Wahroonga in the northeast with the Hume Highway (A22/A28) at Liverpool in the southwest. The entire length of Cumberland Highway is designated route A28. The name of the highway is derived from the Cumberland Plain and Cumberland County. The name ''Cumberland'' was conferred on the County by Governor Arthur Phillip in honour of Ernest Augustus, Duke of Cumberland. History The original western Sydney Bypass was Ring Road 5, which ran from the Pacific Highway and the Hume Highway with Parramatta in between. In 1974, Ring Road 5 was superseded by State Route 55. The growth of Sydney's west had instead turned it into a primary arterial with huge increase in freight traffic. Construction In December 1981, Old Windsor Road was realigned at its southern end. A section of new road was construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barcelona
Barcelona ( , , ) is a city on the coast of northeastern Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second most populous municipality of Spain. With a population of 1.6 million within city limits,Barcelona: Población por municipios y sexo – Instituto Nacional de Estadística. (National Statistics Institute) its urban area extends to numerous neighbouring municipalities within the and is home to around 4.8 million people, making it the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat Junction
A level junction (or in the United Kingdom a flat crossing) is a railway junction that has a track configuration in which merging or crossing railroad lines provide track connections with each other that require trains to cross over in front of opposing traffic at grade (i.e. on the level). The cross-over structure is sometimes called a diamond junction or diamond crossing in reference to the diamond-shaped center. The two tracks need not necessarily be of the same gauge. A diamond crossing is also used as a component of a double junction, like the one illustrated on the right. The opposite of a level junction is a flying junction, where individual tracks rise or fall to pass over or under other tracks. Risks Conflicting routes must be controlled by interlocked signals to prevent collisions. Level junctions, particularly those of fine angles or near right angles, create derailment risks and impose speed restrictions. The former can occur as the flanges of the wheels are m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flying Junction
A flying junction or flyover is a railway junction at which one or more diverging or converging tracks in a multiple-track route cross other tracks on the route by bridge to avoid conflict with other train movements. A more technical term is "grade-separated junction". A burrowing junction or dive-under occurs where the diverging line passes below the main line. The alternative to grade separation is a level junction or flat junction, where tracks cross at grade, and conflicting routes must be protected by interlocked signals. Complexity Simple flying junctions may have a single track pass over or under other tracks to avoid conflict, while complex flying junctions may have an elaborate infrastructure to allow multiple routings without trains coming into conflict, in the manner of a highway stack interchange. Flying junction without crossings Where two lines each of two tracks merge with a flying junction, they can become a four-track railway together, the tracks paired by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balloon Loop
A balloon loop, turning loop, or reversing loop ( North American Terminology) allows a rail vehicle or train to reverse direction without having to shunt or stop. Balloon loops can be useful for passenger trains and unit freight trains. Balloon loops are common on tram and streetcar systems. Many streetcar and tram systems use single-ended vehicles that have doors on only one side and controls at only one end. These systems may also haul trailers with no controls in the rear car, and, as such, must be turned at each end of the route. History Balloon loops were first introduced on tram and, later, metro lines. They did not commonly appear on freight railways until the 1960s, when the modernising British Rail system introduced '' merry-go-round'' (MGR) coal trains that operated from mines to power stations and back again without shunting. Tramways On the former Sydney tram system, loops were used from 1881 until the second-generation system's closure in 1961. Initia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Right-of-way (transportation)
A right-of-way (ROW) is a right to make a way over a piece of land, usually to and from another piece of land. A right of way is a type of easement granted or reserved over the land for transportation purposes, such as a highway, public footpath, rail transport, canal, as well as electrical transmission lines, oil and gas pipelines. In the case of an easement, it may revert to its original owners if the facility is abandoned. This American English term is also used to denote the land itself. A right of way is granted or reserved over the land for transportation purposes, usually for private access to private land and, historically for a highway, public footpath, rail transport, canal, as well as electrical transmission lines, oil and gas pipelines.Henry Campbell Black: ''Right-of-way.'' In''A law dictionary containing definitions of the terms and phrases of American and English jurisprudence, ancient and modern: and including the principal terms of international, constitutio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapid Transit
Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be called a subway, tube, or underground. Unlike buses or trams, rapid transit systems are railways (usually electric railway, electric) that operate on an exclusive right-of-way (transportation), right-of-way, which cannot be accessed by pedestrians or other vehicles, and which is often grade-separated in tunnels or on elevated railways. Modern services on rapid transit systems are provided on designated lines between rapid transit station, stations typically using electric multiple units on rail tracks, although some systems use guided rubber tires, magnetic levitation (''maglev''), or monorail. The stations typically have high platforms, without steps inside the trains, requiring custom-made trains in order to minimize gaps between train a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
