Fewer people were charged with drink-driving over the 20113-14 Christmas and New Year period than last year.
Figures released by the police and Department of Infrastructure show three people were charged, compared with 16 some 12 months earlier.
There were 12 arrests, compared with 19 last year.
Four people have been bailed pending further inquiries, and five were found to be under the limit.
The anti drink-drive campaign ran from December 5 to January 3.
Sergeant Allan Thompson of the roads policing unit said: ‘I am confident that, because we’ve been more proactive and worked later shifts at the key times, the message has got through.
‘I am dismayed that some people are still stupid enough to risk drinking and driving but a reduction from 16 people before a court to three is something that both the Department of Infrastructure and the police are very proud to report.’
The Never Drink and Drive message was used to emphasise dangers associated with driving, even after a small quantity of alcohol.
Imagery included ‘From G&T to A&E’ and ‘From Ale to Jail’.
Over 3,500 items including beer mats, bar runners and Christmas cards with details of late night buses and taxi numbers were distributed.
Social media was used to raise publicity – including photos of patrol cars in key times and locations, targeted to have the biggest impact on those who thought they could get away with drink-driving.