M18 motorway (Great Britain) and 12 June 2015. The M18 was originally to be part of the M1, but it was decided to route the M1 towards Leeds instead of Doncaster, and the routing of what would have been the M1 east of Sheffield became the M18. Data from driver location signs are used to provide distance and carriageway identifier information. The location sequence is a continuation of the M1 location sequence. !scope=col|miles !scope=col|km !scope=col abbr="Southbound"|Southbound exits (B carriageway) !scope=col|Junction !scope=col abbr="Northbound"|Northbound exits (A carriageway) !scope=col|Coordinates M18 motorway (Great Britain) The M18 is a motorway in Yorkshire, England. It runs from the east of
M62 motorway discussion by their county highway authorities. At the same time, it was envisaged that a route between Liverpool and Hull was needed to connect the ports to industrial Yorkshire. After the Second World War, the Minister of Transport appointed engineers to inspect road standards between the A580 road ("East Lancashire Road") in Swinton and the A1 road near Selby. The 1949 Road Plan for South Lancashire identified the need to upgrade the A580 to dual carriageway with grade separation and provide bypasses at Huyton and Cadishead. In 1952, the route for a trans-Pennine motorway, the Lancashire–Yorkshire Motorway, was laid down,