Avon and Somerset's newly elected Police and Crime Commissioner, Sue Mountstevens, joined officers as they carried out random breath tests on drivers during the festive period.
180 people have been arrested in the force area as part of December's Operation Tonic campaign.
She urges people to shop a drink or drug driver by ringing 999 or texting the word 'drunk' to 81819, giving the driver's details if they see anyone getting behind the wheel while under the influence:
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