Police in New Zealand and Australia are cracking down on people who drive while under the influence of drugs or alcohol over the holiday season.
Officers in both countries will this weekend mount breath testing checkpoints with a particular focus on repeat offenders.
Some 36,000 prosecutions were issued last year; 80% of the drivers involved were first time offenders.
Superintendent Paula Rose says 23,000 people had been prosecuted up to the end of September this year.
She says the final number could exceed last year's as more people are apprehended during the holidays.