B-test rap for cop adviser.
Linda McKay, 56, admitted drinking a large glass of wine at a Stirling hotel before her car was pulled over in the city in March.
She was fined pounds 200 at Stirling Sheriff Court and had four penalty points put on her driving licence.
McKay, of Lady bank, Fife, was given three chances to give a roadside breath test. But she failed to blow into the device properly.
A breath test at a police station later said she was under the drink-drive limit.
McKay is an ex-member of the Scottish Police College's board of governors and was on the Police Advisory Board for Scotland.