Ground investigations as part of the A9 dualling programme are to begin between Pitlochry and Glen Garry.
The 10-week scheme will be carried out away from the existing road. However, some traffic management measures will be required when necessary to allow work beside the carriageway to be carried out safely.
A spokesperson for Transport Scotland said the work "is needed to get important information on the existing ground conditions in the vicinity of the A9 carriageway between Crubenmore and Kincraig".
"We apologise for any inconvenience these works will cause and would thank road users and local communities in advance for their patience over the next few weeks," the spokesperson said.
"The contractor will closely monitor the operation of the traffic management measures to ensure that delays are kept to a minimum."
(LM)
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