Question: A1 road continues to be N1 road and M1 motorway at a city that had how many inhabitants in 2016 ?

Context articles: M1 motorway (Republic of Ireland)
M2 motorway (Pakistan)
Milton Malsor
Dublin
Sheffield Parkway
A507 road
A1 road (Northern Ireland)
Sprucefield
List of highways numbered 1
Transport in Leeds

The M1 motorway (Irish: "Mótarbhealach M1" ) 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 M-2 Motorway (Urdu: ‎ ) is a North-South motorway in Pakistan, connecting Rawalpindi/Islamabad to Lahore.
 The motorway is 375 km long and located entirely in Punjab.
 It passes through Kala Shah Kaku, Sheikhupura, Khanqah Dogran, Kot Sarwar, Pindi Bhattian, Salem, Lilla, Kot Momin, Kallar Kahar, Balksar, Nila Dulha and Chakri before ending just outside the twin cities Rawalpindi and Islamabad.
 It was the first motorway built in South Asia.
 At Junction of M2 and M1 there is an interchange which on one side connect Islamabad/Rawalpindi through an expressway of 8 km long, and the new Islamabad international airport through the other side of junction.
 It then continues on to eventually become the M1 motorway linking the twin cities with Peshawar.
 The M-2 crosses the junction of the M4 (to Faisalabad) at Pindi Bhattian.
 It is part of Pakistan's Motorway Network.
 Chaudhary Ghias Mela recently inaugurated the Sial More interchange which exits at Sial More and provides an alternate route to Sargodha.
Milton Malsor is a village and civil parish in South Northamptonshire, England.
 The population of the civil parish at the 2011 census was 761.
 It is 4 mi south of Northampton town centre, 45 mi south-east of Birmingham, and 66 mi north of central London; junction 15 of the M1 motorway is 2 mi east by road.
 The area of the Milton Malsor civil parish is about 1650 acre , stretching from north of the M1 motorway between junctions 15 and 15A, south to the West Coast Main Line, east to the A508 and A45 roads, and west to the A43 road.
Dublin ( , Irish: "Baile Átha Cliath" ] ) is the capital and largest city of Ireland.
 Dublin is in the province of Leinster on Ireland's east coast, at the mouth of the River Liffey and bordered to the South by the Wicklow Mountains.
 The city has an urban area population of 1,173,179.
 The population of the Greater Dublin Area, as of 2016 , was 1,904,806 people.
The Sheffield Parkway is a major dual carriageway which runs between the City of Sheffield and junction 33 of the M1 in South Yorkshire, England.
 The 5.5 mi road was opened in 1974, and runs to the east of the City, connecting Park Square in the City centre with the inner ring road, outer ring road and out to the M1 motorway at junction 33.
 On this route it passes the districts of Wybourn, Darnall, Handsworth, and the village of Catcliffe, at which a slip road connects to the now defunct Sheffield City Airport, Sheffield Business Park and the Advanced Manufacturing Park (AMP).
 Many businesses and Sheffield attractions are located close to the Parkway as it is known in Sheffield, and it can become highly congested.
 For approximately 2.5 mi of its route the road forms a part of the A57 road, the rest being part of the A630 road.
The A507 is an A-class road in England, linking the M1 motorway near Milton Keynes to the A10 at Buntingford.
 Beginning at junction 13 of the M1, the road heads east past Ridgmont to Ampthill.
 Here it passes between Ampthill and its close neighbour Flitwick, essentially separating the two.
 After this it passes Flitton before encountering the A6 at a roundabout.
 Passing Shefford the road briefly multiplexes with the A600 before crossing the A6001 and bypassing Stotfold.
 Crossing the A1 at junction 10 of the A1(M), where the motorway becomes a normal A-road, the A507 then heads south east through Baldock.
 After bridging over the A505 (here being the recently opened Baldock north-south bypass) it terminates at a roundabout with the A10 at Buntingford.
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.
Sprucefield is a major out-of-town retail park in the townland of Magherageery, County Down, Northern Ireland.
 It is on the southern edge of Lisburn; about one mile from the middle of Lisburn and ten miles (16 km) from the middle of Belfast.
 Sprucefield is located beside the M1 motorway and the A1 road.
 It is split in two parts: the Sprucefield Centre and Sprucefield Park.
The following highways are numbered 1.
 For roads numbered A1, see list of A1 roads.
 For roads numbered B1, see list of B1 roads.
 For roads numbered M1, see List of M1 roads.
 For roads numbered N1, see list of N1 roads.
Transport within Leeds consists of extensive road, bus and rail networks.
 The city has good rail and road links to the rest of the country.
 Leeds railway station is one of the busiest in Britain, and Leeds is connected to the national road network via the A1(M) motorway, M1 motorway and M62 motorway.
 The city is served by Leeds Bradford International Airport.