"I hope this campaign will reduce the eventuality of accidents on country roads and make sure it is something that doesn't happen as frequently in the future as it unfortunately does today."
Coulthard, from Twynholm village in Dumfries and Galloway, said he is backing the campaign because he did much of his early driving on rural roads in the south-west of Scotland.
Countryside driving "comes with its own unique set of challenges", he said.
"Driving on country roads takes more than simply being aware of the basic Highway Code. Increased concentration and greater care is needed to adapt to the muddy tracks and changeable conditions, which make country roads particularly tricky."
The campaign will also feature on the radio, online and in cinema adverts, running throughout March.