Nearly seven weeks of overnight roadworks have got under way on the M90 south of Glenfarg.
A series of lane closures are in place overnight until Friday March 29.
Restrictions are in place between 8pm and 6am from Sunday to Thursday each week.
Amey insists the £1.3 million project is not linked to a spate of crashes on that stretch of the M90 in recent weeks.
There are lane closures on both northbound and southbound carriageways during the works.
Additional lane closures will be in place depending on what side workers are on, with the hard shoulder used for traffic.
All works are weather-dependent and may be delayed or cancelled.
Works after spate of M90 crashes
There have been several crashes on the M90 near Glenfarg since the start of the year.
The fire service cut someone free from a vehicle following a crash on New Year’s Day.
Days later, two people were taken to hospital after a car ended up on its roof.
At the end of January, a woman was taken to hospital after a crash on the northbound carriageway near Glenfarg.