This strikes me as being a step too far – according to media reports the average speed cameras are to cover the Charleston to Stonehaven stretch of the A90.
However there is no work taking place on the A90 at Bridge of Muchalls, Newtonhill, Cammachmore or Portlethen. It is the right thing to do at Stonehaven and Charleston though.

The Courier reports that the 50 miles per hour cameras are due to be put in place this week by Aberdeen Roads Ltd, the contractor for the £745 million Aberdeen Western Peripheral Route/Balmedie-Tipperty scheme.

I have asked the AWPR managing agent to confirm (or not) whether there will be average speed cameras between Muchalls and Portlethen.
https://www.pressandjournal.co.uk/…/average-speed-cameras-…/