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
M1 motorway (Northern Ireland) campaign to educate drivers on how to drive on a motorway. At the end of 1965 UK Transport Minister Tom Fraser and his successor Barbara Castle imposed a blanket 70 mph (113 km/h) speed limit on motorways in Great Britain, but the recently constructed Northern Ireland M1 remained free of a blanket speed limit for several years. Several junctions were omitted from the original construction, as these were for future planned motorways, some of these have now been used for other road plans: The M1 is straight and flat on the stretch between Junctions 9 and 10 and on the