Just 0.4% of drivers stopped through Gwent Police’s Christmas anti drink-drive tested positive for alcohol.
In total 20,578 drivers in Gwent were stopped as part of the campaign, which ran from December 1 to January 1. Only 80 returned a positive breath test or refused to provide one.
Of those motorists tested who were under 25-years-old, 0.8% returned a positive breath test or refused/failed to provide one.
Of those who were over 25, 0.3% returned a positive breath test.
Gwent Police Chief Constable Mick Giannasi said: “I am encouraged by the low percentage of positive breath tests returned.
“I am even more encouraged because, of the thousands of motorists stopped by Gwent officers, they were overwhelmingly supportive of the campaign and only a small minority were found to be still drinking and driving, prepared to break the law and risk taking their own life or that of another.
“This is the third time Gwent Police has implemented a mass screening campaign in which the driver is invited to provide a breath test voluntarily.
“We ensure it takes place in high profile locations to clearly demonstrate to motorists and passers-by how seriously we treat the offence of drink driving and our commitment to making Gwent roads
“Not only is it serving as a strong deterrent to any motorist who still considers it acceptable to get behind the wheel after drinking or taking drugs, it also provides the officer with an opportunity to engage with motorists, explain why we are doing it, and reassure drivers that the probability of getting caught as a drink driver is extremely high”