A convoy system will be in place at the Meigle in Skelmorlie during Thursday to allow for new road markings.
Two-way traffic control will be in place, a day after similar works take place in Wemyss Bay.
And new road markings are also being introduced between the Haylie Brae and Kelburn Estate junctions on the A78 during Wednesday and Thursday.
Overnight roadworks are taking place in Fairlie from 10pm on Thursday until 6am on Friday for machine movements, access and parking for railway works, outside the Keppenburn workshops
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