A stretch of the A47 between Peterborough and Wisbech will close overnight next week to allow for safety improvements to take place.
Highways England is installing extra signs and road markings along the A47 at Thorney Toll, where there have been a number of incidents.
Contractors will be working between 9pm and 6am and expect to be finished by Friday 12 February.
There will be traffic lights in place while we are working between Thorney and Guyhirn.
The road will be closed completely while work to replace studs in the centre of the road is completed on Tuesday 9 and Wednesday 10 February.
There will be a clearly signed diversion in place where eastbound traffic will exit before Thorney to head south at Whitepost roundabout, taking the A1139 to Fletton Interchange, then east on the A605 towards Whittlesey, continuing through Coates and heading north to Guyhirn, then north on the A141 and re-joining the A47 at the A141 Guyhirn roundabout. The diversion will be the reverse for westbound traffic.