Part of Peterborough`s Fletton Parkway will be closed overnight until next month during the final stage of work to widen the carriageway to three lanes and improve safety at junctions.
It`ll be shut eastbound between the A1 (M)/A1 junction 17 and junction 3 of the A1139.
Work`s continuing to ease congestion on the A1 and A47 interchange at Wansford.
The traffic signals on the eastern roundabout will be switched from full to part-time during the morning peak period only from today.
The system will also be reconfigured to allow the A1 southbound exit and the A47 westbound to be on green at the same time when the lights are on.