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Grade separation

Index Grade separation

Grade separation is the name given to a method of aligning a junction of two or more surface transport axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other. [1]

71 relations: Amtrak, Australia, Birmingham, BP Pedestrian Bridge, Bridge, Bristol, Central Park, Chicago, Clapham Junction railway station, Cleveland, Cloverleaf interchange, Conrail, Controlled-access highway, Coventry, Coventry Ring Road, CSX Transportation, Cycling in Denmark, Cycling in the Netherlands, Diamond interchange, Dual carriageway, England, Flying junction, Footbridge, Frank Gehry, Grade (slope), Great Central Main Line, Great Central Railway, Highway, Interchange (road), Intersection (road), Interstate Highway System, Ireland, Junction (traffic), Keystone Corridor, Level crossing, Level junction, List of motorways in the United Kingdom, Liubotyn, Local-express lanes, London and South Western Railway, M23 motorway, M25 motorway, New York City, New York, Chicago and St. Louis Railroad, New Zealand, NJ Transit, Norfolk Southern Railway, Northeast Corridor, Ohio, Overpass, ..., Partial cloverleaf interchange, Pennsylvania Railroad, Philadelphia Zoo, Post-Soviet states, Road junction, Roundabout, SEPTA, Single-point urban interchange, Southern Railway (UK), Spaghetti Junction, Speed limit, Stack interchange, Subway (underpass), TGV, Traffic collision, Tunnel, Ukraine, United Kingdom, United States, Worting Junction, 5 ft and 1520 mm gauge railways. Expand index (21 more) »


The National Railroad Passenger Corporation, doing business as Amtrak, is a passenger railroad service that provides medium- and long-distance intercity service in the contiguous United States and to three Canadian cities.

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Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.

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Birmingham is a city and metropolitan borough in the West Midlands, England, with an estimated population of 1,101,360, making it the second most populous city of England and the United Kingdom.

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BP Pedestrian Bridge

The BP Pedestrian Bridge, or simply BP Bridge, is a girder footbridge in the Loop community area of Chicago, Illinois, United States.

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A bridge is a structure built to span physical obstacles without closing the way underneath such as a body of water, valley, or road, for the purpose of providing passage over the obstacle.

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Bristol is a city and county in South West England with a population of 456,000.

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Central Park

Central Park is an urban park in Manhattan, New York City.

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Chicago, officially the City of Chicago, is the third most populous city in the United States, after New York City and Los Angeles.

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Clapham Junction railway station

Clapham Junction railway station is a major railway station and transport hub near St John's Hill in south-west Battersea in the London Borough of Wandsworth.

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Cleveland is a city in the U.S. state of Ohio, and the county seat of Cuyahoga County.

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Cloverleaf interchange

A cloverleaf interchange is a two-level interchange in which left turns (reverse directions in left-driving regions) are handled by ramp roads (US: ramps, UK: slip roads).

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Conrail, the Consolidated Rail Corporation,, was the primary Class I railroad in the Northeastern United States between 1976 and 1999, when its routes were split between the CSX Corporation and Norfolk Southern Railway.

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Controlled-access highway

A controlled-access highway is a type of highway which has been designed for high-speed vehicular traffic, with all traffic flow and ingress/egress regulated.

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Coventry is a city and metropolitan borough in the West Midlands, England.

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Coventry Ring Road

The A4053, commonly known as the Coventry Ring Road, is a ring road in Coventry, England, which forms a complete dual carriageway loop around the city centre.

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CSX Transportation

CSX Transportation is a Class I railroad operating in the eastern United States and the Canadian provinces of Ontario and Quebec.

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Cycling in Denmark

Cycling in Denmark is both a common and popular recreational and utilitarian activity.

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Cycling in the Netherlands

Cycling is a common mode of transport in the Netherlands, with 36% of the people listing the bicycle as their most frequent mode of transport on a typical day as opposed to the car by 45% and public transport by 11%.

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Diamond interchange

A diamond interchange is a common type of road junction, used where a freeway crosses a minor road.

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Dual carriageway

A dual carriageway (British English) or divided highway (American English) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation.

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England is a country that is part of the United Kingdom.

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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.

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A footbridge (also called a pedestrian bridge, pedestrian overpass, or pedestrian overcrossing) is a bridge designed for pedestrians and in some cases cyclists, animal traffic, and horse riders, instead of vehicular traffic.

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Frank Gehry

Frank Owen Gehry,, FAIA (born Frank Owen Goldberg)Reinhart, Anthony (July 28, 2010), Globe and Mail is a Canadian-born American architect, residing in Los Angeles.

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Grade (slope)

The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal.

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Great Central Main Line

The Great Central Main Line (GCML), also known as the London Extension of the Manchester, Sheffield and Lincolnshire Railway (MS&LR), is a former railway line in the United Kingdom.

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Great Central Railway

The Great Central Railway (GCR) in England came into being when the Manchester, Sheffield and Lincolnshire Railway changed its name in 1897 in anticipation of the opening in 1899 of its London Extension (see Great Central Main Line).

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A highway is any public or private road or other public way on land.

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Interchange (road)

In the field of road transport, an interchange is a road junction that uses grade separation, and typically one or more ramps, to permit traffic on at least one highway to pass through the junction without interruption from any other crossing traffic stream.

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Intersection (road)

An intersection is an at-grade junction where two or more roads meet or cross.

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Interstate Highway System

The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States.

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Ireland (Éire; Ulster-Scots: Airlann) is an island in the North Atlantic.

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Junction (traffic)

A junction, when discussed in the context of transport, is a location where traffic can change between different routes, directions, or sometimes modes, of travel.

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Keystone Corridor

The Keystone Corridor is a 349-mile (562 km) railroad corridor between Philadelphia and Pittsburgh, Pennsylvania, that consists of two rail lines: Amtrak's Philadelphia-to-Harrisburg main line, which also hosts SEPTA's Paoli/Thorndale Line commuter rail service; and the Norfolk Southern Pittsburgh Line.

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Level crossing

A level crossing is an intersection where a railway line crosses a road or path at the same level, as opposed to the railway line crossing over or under using a bridge or tunnel.

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Level 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).

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List of motorways in the United Kingdom

The list of motorways in the United Kingdom is a complete list of motorways in the United Kingdom.

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Liubotyn (Люботин, Люботин, translit. Lyubotin) is a city in Kharkiv Oblast (province) of eastern Ukraine.

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Local-express lanes

The local-express lane (also called collector–distributor lanes within a single interchange) system is an arrangement of carriageways within a major highway where long distance traffic can use lanes with fewer interchanges compared to local traffic which use 'local' or 'collector' lanes that have access to all interchanges.

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London and South Western Railway

The London and South Western Railway (LSWR) was a railway company in England from 1838 to 1922.

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M23 motorway

The M23 is a motorway in the United Kingdom.

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M25 motorway

The M25 or London Orbital Motorway is a motorway that encircles almost all of Greater London, England (with the exception of North Ockendon), in the United Kingdom.

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New York City

The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.

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New York, Chicago and St. Louis Railroad

The New York, Chicago and St.

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New Zealand

New Zealand (Aotearoa) is a sovereign island country in the southwestern Pacific Ocean.

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NJ Transit

New Jersey Transit Corporation, branded as NJ Transit (NJT; stylized as NJ TRANSIT), is a state-owned public transportation system that serves the US state of New Jersey, along with portions of New York State and Pennsylvania.

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Norfolk Southern Railway

The Norfolk Southern Railway is a Class I railroad in the United States.

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Northeast Corridor

The Northeast Corridor (NEC) is an electrified railroad line in the Northeast megalopolis of the United States.

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Ohio is a Midwestern state in the Great Lakes region of the United States.

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An overpass (called a flyover in the United Kingdom and some other Commonwealth countries) is a bridge, road, railway or similar structure that crosses over another road or railway.

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Partial cloverleaf interchange

A partial cloverleaf interchange or parclo is a modification of a cloverleaf interchange.

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Pennsylvania Railroad

The Pennsylvania Railroad (or Pennsylvania Railroad Company and also known as the "Pennsy") was an American Class I railroad that was established in 1846 and was headquartered in Philadelphia, Pennsylvania.

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Philadelphia Zoo

The Philadelphia Zoo, located in the Centennial District of Philadelphia, Pennsylvania, on the west bank of the Schuylkill River, was the first true zoo in the United States.

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Post-Soviet states

The post-Soviet states, also collectively known as the former Soviet Union (FSU) or former Soviet Republics, are the states that emerged and re-emerged from the Union of Soviet Socialist Republics in its breakup in 1991, with Russia internationally recognised as the successor state to the Soviet Union after the Cold War.

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Road junction

A junction is where two or more roads meet.

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A roundabout, also called a traffic circle, road circle, rotary, rotunda or island, is a type of circular intersection or junction in which road traffic flows almost continuously in one direction around a central island.

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The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, subway / elevated rail line, commuter and light rail line, and electric trolleybus services to nearly 4 million people in five counties in and around Philadelphia, Pennsylvania.

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Single-point urban interchange

A single-point urban interchange (SPUI, or), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange.

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Southern Railway (UK)

The Southern Railway (SR), sometimes shortened to 'Southern', was a British railway company established in the 1923 Grouping.

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Spaghetti Junction

"Spaghetti Junction" is a nickname sometimes given to a complicated or massively intertwined road traffic interchange that resembles a plate of spaghetti.

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Speed limit

Road speed limits are used in most countries to set the maximum (or minimum in some cases) speed at which road vehicles may legally travel on particular stretches of road.

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Stack interchange

A stack interchange, or colloquially butterfly junction, is a particular, free-flowing type of designs for interchanges, meaning grade-separated road junctions.

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Subway (underpass)

In the United Kingdom, the Republic of Ireland, Hong Kong and Commonwealth countries such as India, South Africa, Australia and New Zealand, a subway is normally an underpass for pedestrians and/or cyclists beneath a road or railway, allowing them to reach the other side in safety.

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The TGV (Train à Grande Vitesse, "high-speed train") is France's intercity high-speed rail service, operated by the SNCF, the state-owned national rail operator.

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Traffic collision

A traffic collision, also called a motor vehicle collision (MVC) among other terms, occurs when a vehicle collides with another vehicle, pedestrian, animal, road debris, or other stationary obstruction, such as a tree, pole or building.

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A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end.

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Ukraine (Ukrayina), sometimes called the Ukraine, is a sovereign state in Eastern Europe, bordered by Russia to the east and northeast; Belarus to the northwest; Poland, Hungary, and Slovakia to the west; Romania and Moldova to the southwest; and the Black Sea and Sea of Azov to the south and southeast, respectively.

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United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.

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United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

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Worting Junction

Worting Junction is a railway junction on the former LSWR route south of Basingstoke where the line divides to go towards Salisbury or Southampton.

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5 ft and 1520 mm gauge railways

Railways with a railway track gauge of were first constructed in the United Kingdom and the United States.

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Grade Separation, Grade Separations, Grade Separators, Grade separated, Grade separated junction, Grade separator, Grade separtion, Grade seperation, Grade seperator, Grade-separated, Grade-separation, Sunken highway, Traffic weaving.


[1] https://en.wikipedia.org/wiki/Grade_separation

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