The Great Britain road numbering scheme is a numbering scheme used to classify and identify all roads in Great Britain. Each road is given a single letter and a subsequent number. Introduced to arrange funding allocations, the numbers soon became used on maps and as a method of navigation. Two sub-schemes exist: one for motorways, and another for non-motorway roads. While some major roads form part of the International E-road network, no E-routes are signposted in the UK. Due to changes in local road designation, in some cases roads are numbered out of zone. There are also instances where road numbers in one area are also found in another location. For example the A594 is designated as the Leicester Ring Road and also allocated to a road in Cumbria.
The island of Ireland, comprising Northern Ireland and the Republic of Ireland, has an extensive network of tens of thousands of kilometres of public roads, usually surfaced. These roads have been developed and modernised over centuries, from trackways suitable only for walkers and horses, to surfaced roads including modern motorways. Driving is on the left-hand side of the road. The major routes were established before Irish independence and consequently take little cognisance of the border other than a change of identification number and street furniture. Northern Ireland has had motorways since 1962, and has a well-developed network of primary, secondary and local routes. The Republic started work on its motorway network in the early 1980s; and historically, the road network there was once somewhat less well developed. However, the Celtic Tiger economic boom and an influx of European Union structural funding, saw national roads and regional roads in the Republic come up to international standard quite quickly. In the mid-1990s, for example, the Republic went from having only a few short sections of motorway to a network of motorways, dual carriageways and other improvements on most major routes as part of a National Development Plan. Road construction in Northern Ireland now tends to proceed at a slower pace than in the Republic, although a number of important bypasses and upgrades to dual carriageway have recently been completed or are about to begin.
Craigavon is a town in northern County Armagh, Northern Ireland. Its construction began in 1965 and it was named after the first Prime Minister of Northern Ireland: James Craig, 1st Viscount Craigavon. It was intended to be the heart of a new linear city incorporating Lurgan and Portadown, but this plan was mostly abandoned and later described as having been flawed. Among local people today, "Craigavon" refers to the area between the two towns. It is built beside a pair of artificial lakes and is made up of a large residential area (Brownlow), a second smaller one (Mandeville), plus a central area (Highfield) that includes a substantial shopping centre, a courthouse and the district council headquarters. The area around the lakes is a public park and wildlife haven made up of woodland with walking trails. There is also a watersports centre, golf course and ski slope in the area. In most of Craigavon, motor vehicles are completely separated from pedestrians, and roundabouts are used extensively. It hosted the headquarters of the former Craigavon Borough Council. Craigavon had an approximate population of 22,566 people at the 2021 Census.
A trunk road, trunk highway, or strategic road is a major road, usually connecting two or more cities, ports, airports and other places, which is the recommended route for long-distance and freight traffic. Many trunk roads have segregated lanes in a dual carriageway, or are of motorway standard.
The River Bann is one of the longest rivers in Northern Ireland, its length, Upper and Lower Bann combined, being 129 km (80 mi). However, the total length of the River Bann, including its path through the 30 km (19 mi) long Lough Neagh is 159 km (99 mi). Another length of the River Bann given is 90 mi. The river winds its way from the southeast corner of Northern Ireland to the northwest coast, pausing in the middle to widen into Lough Neagh. The River Bann catchment has an area of 5,775 km2. The River Bann has a mean discharge rate of 92 m3/s. According to C. Michael Hogan, the Bann River Valley is a settlement area for some of the first human arrivals in Ireland after the most recent glacial retreat.
A routenumber, designation or abbreviation is an identifying numeric designation assigned by a highway authority to a particular stretch of roadway to distinguish it from other routes and, in many cases, also to indicate its classification, general geographical location and/or orientation. The numbers chosen may be used solely for internal administrative purposes; however, in most cases they are also displayed on roadside signage and indicated on maps.
The M1 is a motorway in Northern Ireland. It is the longest motorway in Northern Ireland and runs for 38 miles (61 km) from Belfast to Dungannon through County Antrim, County Down, County Armagh and County Tyrone. It forms part of the route via the A1 in Northern Ireland between Belfast and Dublin as well as being a part of the unsigned European E01 and E18 routes.
European route E18 runs from Craigavon in Northern Ireland to Saint Petersburg in Russia, passing through Scotland, England, Norway, Sweden and Finland. It is about 1,890 kilometres in length.
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.
The A2 is a major road in Northern Ireland, a considerable length of which is often referred to the Antrim Coast Road because much of it follows the scenic coastline of County Antrim; other parts of the road follow the coasts in Counties Down and Londonderry.
The transport system in Scotland is generally well-developed. The Scottish Parliament has control over most elements of transport policy within Scotland, with the Cabinet Secretary for Transport, Infrastructure and Connectivity holding portfolio responsibility within the Scottish Government. Transport Scotland is the Executive Agency responsible for the Scottish transport network.
The United Kingdom has a network of roads, of varied quality and capacity, totalling about 262,300 miles (422,100 km). Road distances are shown in miles or yards and UK speed limits are indicated in miles per hour (mph) or by the use of the national speed limit (NSL) symbol. Some vehicle categories have various lower maximum limits enforced by speed limiters. A unified numbering system is in place for Great Britain, whilst in Northern Ireland, there is no available explanation for the allocation of road numbers.
A national primary road is a road classification in Ireland. National primary roads form the major routes between the major urban centres. There are 2649 km of national primary roads. This category of road has the prefix "N" followed by one or two digits. Motorways are prefixed "M" followed by one or two digits.
The M5 is a spur motorway of 1.4 miles (2.3 km) length in north Belfast, Northern Ireland. It connects the M2 to the A2 Shore Road at Hazelbank in Newtownabbey. It is a dual two lane road with most of the road on a causeway in Belfast Lough in order to bypass Whitehouse beach.
The M12 is a 1+1⁄2 miles (2.4 km) length of spur motorway in County Armagh, Northern Ireland. It was opened in 1970.
The A6 road in Northern Ireland runs for 71.4 miles (114.9 km) from Belfast to Derry, via County Antrim and County Londonderry. From Belfast to Randalstown the route has been superseded by a motorway. Mostly single carriageway, there are sections of dual carriageway in Antrim town centre and from Randalstown to Toome, including the Toome bypass. In urban and suburban districts of Belfast and Derry the route is single carriageway with 4 lanes. In rural parts, there are numerous climbing lanes along the route. The A6 is one of Northern Ireland's most important arterial routes, as the road runs between its two largest cities and urban areas. Between Randalstown and Derry the road forms part of European route E16. There is a new dual carriageway between Drumahoe and Dungiven, which is still under construction as of February 2023.
A High-quality dual carriageway (HQDC) is a road category in Ireland. It is defined as an all-purpose dual carriageway road type built to near motorway standards, but without motorway classification or motorway restrictions. High-quality dual carriageways have full grade-separated access and do not have junctions with minor roads. Such roads in the Republic of Ireland have been built as part of the 2000–2006 and 2007–2013 National Development Plans, including interurban routes from Dublin to other cities.
In Ireland, the highest category of road is a motorway, indicated by the prefix M followed by a one- or two-digit number. The motorway network consists entirely of motorway-grade dual carriageways and is largely focused upon Dublin. There are also several three-lane motorways, while Ireland's busiest road, the M50, incorporates four-lane, five-lane, and six-lane stretches.
There have been routes and trackways in Ireland connecting settlements and facilitating trade since ancient times and the country now has an extensive network of public roads connecting all parts of the island.
