Upgrade of the M1 between junctions 13 (Ridgmont, south of Milton Keynes) and 16 (Upper Heyford, west of Northampton) to Smart Motorway standard. The scheme will feature All Lane Running, meaning the hard shoulder will be converted into a fourth permanent traffic lane throughout.
The scheme will complete the Smart Motorway on the M1 between the M25 and M6, though as the adjoining sections are older this part will be notably simpler to use than the others. In particular the section south from Milton Keynes to Luton operates with part-time hard shoulder running and complex through-junction running on the hard shoulder at various times of day, and it may prove even harder than at present for drivers to understand the changing rules regarding the hard shoulder when passing from one section to another.
At 37 km (27 miles) this is one of the longest stretches of road to be converted to Smart Motorway in a single scheme.
This scheme is part of the Smart Motorways programme of works.
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