Highways England says the upgrade of the M6 in Cheshire to smart motorway will be completed by the end of March, as the fourth running lane has been opened to traffic.
The new overhead signs have also been switched which, as with other such schemes, details speed limit, lane closure and incidents en route.
They say a similar smart motorway scheme on a stretch of the M62 in West Yorkshire has resulted in commuters saving an average 30 minutes each week, despite an increase in the number of vehicles using the route.
Arun Sahni, Project Manager at Highways England, said: “We’re on schedule to complete the upgrade of the M6 through Cheshire by the end of March and we’ve now reached the stage where we can open extra lanes on almost half of the scheme.
“The additional lanes we’re introducing will significantly increase the motorway’s capacity and will improve journeys on the key route between the West Midlands and North West”