The plans involve new road junctions for the village of Dalwhinnie which would be created under the A9 route between Perth and Inverness.
Transport Minister Keith Brown has encouraged the public to attend the exhibition to view and comment on the plans.
He said: "The A9 Dualling Programme is the largest transport investment in Scotland's history, some 80 miles of new upgraded dualled road, and we are pressing ahead in earnest with the preparation work to deliver it – the first Government ever to commit to doing so.
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"Work across the scheme is moving apace with construction expected to start on dualling the first section between Kincraig and Dalraddy this summer.
"The necessary design work is also progressing elsewhere on the project, with the latest options for junction and access layouts at Dalwhinnie being firmed up. These early designs form part of wider plans being taken forward to dual the six mile stretch from Dalwhinnie to Crubenmore, building on preparation work being taken forward across the entire scheme."
He added: "The dualling work is part of a wider strategy to improve the safety and performance of Scotland's longest trunk road, with average speed cameras already helping to make positive changes to driver behaviour on the route."
The initial designs will be on display at Dalwhinnie Village Hall on Monday 9 and Tuesday 10 March 2015.
(JP/CD)
