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
Transport in Leeds as part of an East Leeds Extension project. Guided bus routes using kerb guidance operate on parts of the A61 (Scott Hall Road) and A64 (York Road). The M621 is an internal urban motorway. Much of it is the former M1 (until it was diverted as the South East Leeds Orbital linking the M1 and A1(M)). The motorway begins at the M62 in Birstall, (near Ikea), and finishes where it merges with the M1 at Stourton. Since the M1 diversion the motorway has increased in length, previously it only ran from Birstall as far as the city centre. The M62