A 50mph speed limit will be placed on a four-mile stretch of the A9 just north of Perth for 18 months as construction begins on the Cross Tay Link Road project.
The restriction will be enforced on the Inveralmond Roundabout heading north as earthworks start on site for the £118 million major road structure this month.
A key part of the project will be upwards of one million cubic metres of earth being moved - the equivalent of filling more than four hundred Olympic-sized swimming pools.
