Under-pressure roads bosses have stepped up health and safety restrictions on Aberdeen bypass sites following a spate of high-profile accidents.
It comes after official contractor Aberdeen Roads Limited was summoned for crunch talks following safety fears which were sparked over a number of crashes and other incidents on the development.
It was revealed earlier this year an average of one worker a week had been injured on the £745 million Aberdeen Western Peripheral Route.
Since then, there have been continual high-profile incidents at the site with calls for an examination of practicese.
Keith Brown, the minister responsible for the scheme, was forced to step in and called for an urgent meeting to address the ongoing issues.
Now transport chiefs confirmed they are taking further measures to protect workers.
Aberdeen South MP Ross Thomson has been a long-term critic of health and safety practices at the site.
He said: “I am pleased to hear Transport Scotland is taking action to address the problems on the AWPR site.”