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 a smart motorway system between junctions 25 and 30. Work started in 2014 to install the system around the M62 – M60 section. The section between junctions 18 (with the M60) and 29 (with the M1) through Greater Manchester and West Yorkshire has been identified as one of the most congested roads in Britain. The motorway provides a direct link between three of the five largest metro areas in England, and is the most practical route for HGVs and other commercial traffic between Manchester and Leeds. There are a significant amount of warehouses in these urban areas, which require commercial