Roadworks are taking place on Friday to the south of Fairlie which will lead to travel delays.
A road convoy system will be in place while Amey maintenance workers carry out the carriageway patching.
The traffic light system will be in operation from 9.30am till 3.30pm on November 27.
Similar patching works are taking place on the A78 near Skelmorlie overnight from November 25-26.
A convoy system will also be in place from 8pm till 6am.
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