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
Leeds the A62, A63, A64, A65 and A660 roads, and is also situated on the A58 and A61. The M1 and M62 intersect to its south and the A1(M) passes to the east. Leeds is one of the principal hubs of the northern motorway network. Additionally, there is an urban motorway network; the radial M621 takes traffic into central Leeds from the M62 and M1. There is an Inner Ring Road with part motorway status and an Outer Ring Road. Part of the city centre is pedestrianised, and is encircled by the clockwise-only Loop Road. Public transport in the Leeds area