As the warmer months approach, Coasties can expect to see more police checkpoints on our roads.

In a bid to boost road safety, Auckland Police have launched a series of operations targeting drivers under the influence of alcohol or drugs.

Last week, police set up over 20 checkpoints across the district, breath-testing more than 12,000 drivers over two days.

According to Acting Inspector Scott Jones, Relieving Road Policing Manager for Auckland City, the majority of motorists made the responsible decision to drive sober.

However, 18 drivers were found to be over the limit and are facing enforcement action.

One driver was discovered to be more than double the legal limit, resulting in an immediate licence suspension and a court appearance.

"It's great to see so many people driving drink-free, but that result is still too many drinking and driving on our roads," Acting Inspector Jones said.

"The decision made by all 18 of these drivers has put themselves and other members of the community at enormous risk."

Police also issued infringement notices for high-risk driving behaviours, including speeding, failing to wear seatbelts, and using mobile phones while driving.

With summer approaching, police will intensify their focus on drink and drug-related driving.

Acting Inspector Jones urged locals to plan ahead, appoint a sober driver, or use public transport to get home safely.

"We ask that people make the responsible decision to keep themselves and others safe," he said.

"Your family and friends will appreciate this, and so will we."