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Otago coastal road police area manager Ian Temple said police stopped about 450 drivers, eight of whom were found to have alcohol on their breath; however, nobody was processed for drink driving or would appear in court.
Many people did not consider that alcohol could still be in their system the morning after a big night, but there was a real possibility of them still being impaired.
The early morning checkpoint did slow traffic quite a bit, but it was a valuable tool to keep roads safe and remind people to be mindful when driving home the next morning, he said.