A1 road continues to be N1 road and M1 motorway at a city that had how many inhabitants in 2016 ?
A1 road (Northern Ireland) 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.
A1 motorway (Luxembourg) The Autoroute 1, abbreviated to A1 or otherwise known as the Trier motorway (French: "Autoroute de Trèves" ), is a motorway in Luxembourg. It is 36.203 km long and connects Luxembourg City, in the south, to Wasserbillig, in the east. A few hundred metres to the north of Wasserbillig, it reaches the German border, whereupon it becomes the A64, which leads to Trier.