There are hopes that the increase in breath tests will be a turning point for reducing deaths and injuries from drunk driving.
Provisional figures show Police took more than three million tests last year, up from 2.4 million in 2022.
It's the first time it's surpassed three million tests since 2014.
AA road safety spokesperson Dylan Thomsen told Tim Dower that it's testament to the huge effort to crackdown on drunk driving.
He says the challenge now is to make sure it isn't a one-off.
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