The A1 is a major route in Northern Ireland. It runs from Belfast via Lisburn and Banbridge to the border with the Republic of Ireland south of Newry, from where the road continues to Dublin, becoming the N1 road and M1 motorway. Between Sprucefield and Carrickcarnan the road forms part of the European route E01.
The M1 motorway is a motorway in Ireland. It forms the large majority of the N1 national primary road connecting Dublin towards Belfast along the east of the island of Ireland. The route heads north via Swords, Drogheda and Dundalk to the Northern Irish border just south of Newry in County Armagh, where it joins the A1 road and further on, the M1 motorway in Northern Ireland. It also forms a significant part of the road connection between Dublin and the Northern Irish cities of Newry, and Lisburn. The route is part of European route E01.
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. 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.
The N11 road is a national primary road in Ireland, running for 129 km (80 mi) along the east side of Ireland from Dublin to Wexford. It passes close to Bray, Greystones, Wicklow, Arklow and Gorey and also passes through Enniscorthy, amongst others. Beyond Wexford, the route continues to Rosslare as the N25. The road forms part of European route E01. As of 2015 the N11/M11 is of dual carriageway or motorway standard from Dublin as far as Gorey in County Wexford.
The N4 road is a national primary road in Ireland, running from Dublin to the northwest of Ireland and Sligo town. The M6 to Galway diverges from this route after Kinnegad, while the N5 to Westport diverges at Longford town. The section of the N4 that is motorway-standard is designated the M4 motorway.
The N3 road is a national primary road in Ireland, running between Dublin, Cavan and the border with County Fermanagh. The A509 and A46 roads in Northern Ireland form part of an overall route connecting to Enniskillen, and northwest to the border again where the N3 reappears to serve Ballyshannon in County Donegal.
The N2 road is a national primary road in Ireland, running from Dublin to the border with Northern Ireland at Moy Bridge near Aughnacloy, County Tyrone to connect Dublin with Derry via the A5. A section of the route near Dublin forms the M2 motorway.
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.
The European route E 20 is part of the United Nations International E-road network.
European route E18 runs from Craigavon in Northern Ireland to Saint Petersburg in Russia, passing through Scotland, Norway, Sweden, and Finland. It is about 1,890 kilometres in length.
The N18 road is a national primary road in Ireland, connecting the cities of Limerick and Galway. Ennis and Gort are two major towns on the route, and Shannon Airport is reached via the connecting N19. The west coast route continues on to Sligo as the N17. The section from Limerick to the N19 junction forms part of European route E20, and the entire route is part of the proposed Atlantic Corridor. The section of motorway from Shannon to Claregalway is designated the M18 motorway. The tolled Limerick Tunnel forms part of the route.
The N25 road is a national primary road in Ireland, forming the route from Cork to Rosslare Europort via Waterford City. The road is part of the E30 European route and a short section is also part of the E01 European route. It forms part of the proposed Atlantic Corridor route.
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.
A High-quality dual carriageway (HQDC) is a category of road in Ireland. It is 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.
The A26 is a road in Northern Ireland. It travels in a North-South direction from Coleraine, County Londonderry to Banbridge, County Down.
The A8 in Northern Ireland is a 26.1 km route connecting the city of Belfast with the harbour town of Larne. One of the busiest routes in the region, the road forms part of the unsigned European routes E01 and E18.
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 predominantly consists of two-lane dual carriageways and is primarily focused upon Dublin, although there are a few three-lane motorways and the M50 has four lanes at some points.
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.
The European route E01 in the United Kingdom is a series of roads, part of the International E-road network running completely in the province of Northern Ireland from Larne, by the capital Belfast to the Irish border at Newry. Eventually the route goes to the Republic of Ireland, Spain and Portugal.
The European route E01 in the Republic of Ireland is a serie of roads, part of the International E-road network running in an north south axis on the Irish east coast. It runs through five counties starting on the British border with the province of Northern Ireland at Dundalk, coming from Belfast and Larne. It passes the capital Dublin until it stops at Rosslare Harbour in Southern Ireland. From there the E01 crosses the Celtic Sea and the Bay of Biscay on a non-existent ferry towards Spain and Portugal.
