M1 motorway the A5, the motorway takes a more northerly route through the East Midlands, via Leicester, Loughborough, Nottingham to Sheffield, where the M18 splits from the M1 at Junction 32 to head to Doncaster. Originally, the M1 was planned to end at Doncaster but it was decided to make what was going to be the "Leeds and Sheffield Spur" the primary route with the section to the A1(M) south of Doncaster given the separate motorway number M18. From Junction 32, the motorway passes Sheffield, Rotherham, Barnsley and Wakefield, reaching the original end of the motorway at (the original) Junction 44 to
Princes Motorway for the original route, then run along the route of the current Princes Highway with tunnels bypassing the towns of Heathcote and Waterfall before joining the existing freeway. Princes Motorway The Princes Motorway is a predominately dual carriage untolled motorway that links Sydney to Wollongong and further south through the Illawarra region to . Part of the Australian Highway 1 network, the motorway is designated with the route number M1. The motorway is sometimes known by its previous signposting F6 (Freeway Route 6) and its previous name, the Southern Freeway, which applied to the sections between Waterfall and Bulli Tops