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A48(M) Motorway
The A48(M) motorway in Wales links Cardiff with Newport. It is a long M4 spur. At St Mellons, it runs continuously into the dual-carriageway A48, which also features (albeit narrow) hard shoulders. The A48(M) has no junctions and opened in 1977.
The M4 was extended from junction 29 in 1980.


Previous A48(M) motorways

The bypass which opened in 1966, was numbered A48(M) before its incorporation into the westward extension of the M4 in the 1970s. Some maps show the



South Wales Trunk Road Agent
The South Wales Trunk Road Agent (SWTRA; cy, Asiant Cefnffyrdd De Cymru) is one of the two trunk road agents in Wales. It is responsible for managing motorways and trunk roads in South Wales on behalf of the Welsh Government. Established on 1 April 2006 as the ''South Wales Trunk Road Agency'', and renamed to its current name on 1 April 2012. The agent manages the motorways and trunk roads in the fourteen principal areas of the south of Wales, from the Severn Bridge in the east to Milford Haven in the west. The remainder of Wales is managed by the North and Mid Wales Trunk Road Agent. History Prior to the South Wales Trunk Road Agency being established, motorways and trunk roads in Wales were managed by the Ministry of Transport, later being taken on by the Welsh Office. The National Assembly for Wales took responsibility for devolved powers on 1 July 1999, as part of this process, transport was transferred from the Parliament of the United Kingdom to the National Assembly for ...
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Spur Route
A spur route is a short road forming a branch from a longer, more important road such as a freeway, Interstate Highway, or motorway. A bypass or beltway should not be considered a true spur route as it typically reconnects with another or the same major road. Canada In the province of Ontario, most spur routes are designated as A or B, such as Highway 17A, or 7B. A stands for "Alternate Route", and usually links a highway to a town's central core or main attraction, while B stands for "Business Route" or "Bypass", but are used when a main highway is routed around a town and away from its former alignment. The designation of "C" was used twice (Highway 3C and 40C), and is assumed to mean "Connector". Both highways have long since been retired and are now county roads. There was also one road with the D designation (Highway 8D, later the original Highway 102), and this may have stood for "Diversion", as it was along the first completed divided highway in Canada at the time (Coo ...
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Motorways In Wales
A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms include ''throughway'' and ''parkway''. Some of these may be limited-access highways, although this term can also refer to a class of highways with somewhat less isolation from other traffic. In countries following the Vienna convention, the motorway qualification implies that walking and parking are forbidden. A fully controlled-access highway provides an unhindered flow of traffic, with no traffic signals, intersections or property access. They are free of any at-grade crossings with other roads, railways, or pedestrian paths, which are instead carried by overpasses and underpasses. Entrances and exits to the highway are provided at interchanges by slip roads (ramps), which allow for speed changes between the highway and arterials a ...
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Morriston
Morriston (; cy, Treforys ) is a Community (Wales), community in the City and County of Swansea, Wales and falls within the Morriston (electoral ward), Morriston ward. It is the largest community in Swansea county. Morriston is sometimes referred to as a distinct town (e.g. the local football club is named Morriston Town A.F.C.), however it has never had a town charter, and is now part of the continuous urban sprawl around Swansea, the centre of which lies three miles to the south-west. It is the most populous of Swansea's electoral divisions and is situated close to other communities including Plasmarl, Treboeth, Llansamlet, Cwmrhydyceirw, Clase, Ynystawe and Ynysforgan. Landscape and geography Morriston is in the Lower Swansea Valley, adjoining the River Tawe, on terrain sloping gently downwards to the east and steeply upwards to the west. It is centred on Woodfield Street, a shopping area that runs in a north–south axis. The street features two of Morriston's most notabl ...
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Port Talbot
Port Talbot (, ) is a town and community in the county borough of Neath Port Talbot, Wales, situated on the east side of Swansea Bay, approximately from Swansea. The Port Talbot Steelworks covers a large area of land which dominates the south east of the town and is one of the biggest steelworks in the world but has been under threat of closure since the 1980s. The population was 37,276 in 2011. History Modern Port Talbot is a town formed from the merging of multiple villages, including Baglan, Margam, and Aberafan. The name 'Port Talbot' first appears in 1837 as the name of the new docks built on the south-east side of the river Afan by the Talbot family. Over time it came to be applied to the whole of the emerging conurbation. The earliest evidence of humans in the Port Talbot area has been found on the side of Mynydd Margam where Bronze Age farming ditches can be found from 4,000 BC. There were Iron Age hill forts on Mynydd Dinas, Mynydd Margam, Mynydd Emroch and other ...
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London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ...
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Hard Shoulder
A shoulder, hard shoulder (British) or breakdown lane, is an emergency stopping lane by the verge of a road or motorway, on the right side in countries which drive on the right, and on the left side in countries which drive on the left. Many wider (U.S.) freeways, or expressways elsewhere have shoulders on both sides of each directional carriageway — in the median, as well as at the outer edges of the road, for additional safety. Shoulders are not intended for use by through traffic, although there are exceptions. Purpose Shoulders have multiple uses, including: * Emergency vehicles such as ambulances, fire trucks and police cars may use the shoulder to bypass traffic congestion. * In the event of an emergency or breakdown, a motorist can pull into the shoulder to get out of the flow of traffic and obtain a greater degree of safety. * Active traffic management, used on busy multi-lane roads, may allow 'hard shoulder running' by general traffic at reduced speeds during periods ...
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A48 Road
The A48 is a trunk road in Great Britain running from the A40 at Highnam, west of Gloucester, England, to the A40 at Carmarthen, Wales. Before the Severn Bridge opened on 8 September 1966, it was a major route between England and South Wales. For most of its route, it runs almost parallel to the M4 motorway. During times of high winds at the Severn Bridge, the A48 is used as part of the diversion route and is still marked as a Holiday Route. From Gloucester, the A48 runs through the villages of Minsterworth, Westbury-on-Severn, connects to a link road to Cinderford in the Forest of Dean then through Newnham, Blakeney and since 1995, bypassing Lydney on the west bank of the River Severn. It crosses the England–Wales border at Chepstow and continues westwards close to the South Wales coast passing Newport, Cardiff, Cowbridge, Bridgend, Pyle, Port Talbot, Neath and Swansea, before terminating at the junction with the A40 near the centre of Carmarthen. There is a motorwa ...
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Newport, Wales
Newport ( cy, Casnewydd; ) is a city and Local government in Wales#Principal areas, county borough in Wales, situated on the River Usk close to its confluence with the Severn Estuary, northeast of Cardiff. With a population of 145,700 at the 2011 census, Newport is the third-largest authority with City status in the United Kingdom, city status in Wales, and seventh List of Welsh principal areas, most populous overall. Newport became a unitary authority in 1996 and forms part of the Cardiff-Newport metropolitan area. Newport was the site of the last large-scale armed insurrection in Great Britain, the Newport Rising of 1839. Newport has been a port since medieval times when the first Newport Castle was built by the Normans. The town outgrew the earlier Roman Britain, Roman town of Caerleon, immediately upstream and now part of the borough. Newport gained its first Municipal charter, charter in 1314. It grew significantly in the 19th century when its port became the focus of Coa ...
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Castleton, Newport
Castleton ( cy, Cas-bach) is a hamlet in the city of Newport, South Wales. Location Castleton is in the Marshfield ward on the A48 dual carriageway located between the city of Newport to the east and Cardiff to the west. Amenities Castleton has a Baptist chapel. It was at the Castleton Baptist Association meeting in 1816 that it was resolved to build the first Welsh Baptist Chapel in Newport, and the land then acquired in Charles Street, with the help of a bequest from John Williams, a Newport tailor. This building is now used as a business and Church meetings are held at Gateway Baptist in Marshfield nearby. There is a filling station with a cafe and deli next door. Across the road, is the ''Coach and Horses'', a pub/restaurant and hotel. Transport The A48 dual carriageway is the main road through Castleton. The A48(M) motorway passes close to the north of the village. There are no motorway junctions on this short link between ( M4) Junction 29 and Junction 29A at ...
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Motorway
A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms include '' throughway'' and '' parkway''. Some of these may be limited-access highways, although this term can also refer to a class of highways with somewhat less isolation from other traffic. In countries following the Vienna convention, the motorway qualification implies that walking and parking are forbidden. A fully controlled-access highway provides an unhindered flow of traffic, with no traffic signals, intersections or property access. They are free of any at-grade crossings with other roads, railways, or pedestrian paths, which are instead carried by overpasses and underpasses. Entrances and exits to the highway are provided at interchanges by slip roads (ramps), which allow for speed changes between the highway and arteri ...
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A48 (M), Looking East Near Castleton
A48 may refer to: * A48 motorway (France), a road connecting the A43 and Grenoble * A48 road (Great Britain), a road connecting Gloucester, England and Carmarthen, Wales * Autovía A-48, a motorway under construction connecting Cadiz and Algeciras, Spain * East Indian Defence The East Indian Defence is a chess opening characterised by the moves: :1. d4 Nf6 :2. Nf3 g6 Description This opening has a close kinship to the more-common King's Indian Defence and is often considered a variant thereof. The difference is th ..., Encyclopaedia of Chess Openings code A 48 may refer to: * Junkers A 48, a sport and school German aircraft built in 1929 {{Letter-NumberCombDisambig ...
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