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 exiting motorists the hazard of crossing the still-merging M62 traffic. Worsley Braided Interchange serves Junctions 14 and 15 and Junctions 1 to 3 of the M61 which terminates to Preston. Between junction 21 and junction 22, the motorway has four lanes eastbound to climb Windy Hill, before crossing the border into Yorkshire and interchanging with the rural A672 road, reaching the highest point of any motorway in England . There is then a travel through the Pennines to the next junction, passing Scammonden Reservoir and Stott Hall Farm. The next junction is 23, which is accessible only for westbound traffic.