Dorset police carried out 869 breath tests during the Christmas and New Year drink and drug drive campaign, which ran from December 1 to January 1.
It resulted in 105 arrests β 20 of which were for driving under the influence of drugs and five for refusing to provide a sample.
During the same period the previous year, 88 people were arrested. In all, 44 people have so far been charged as a result of the campaign.
Of these 33 were men and 11 were women.
Inspector Matt Butler, of Devon and Cornwall and Dorset Alliance Road Policing Team, said: βIt is disappointing, despite obvious risks, a number of motorists decided to drive after taking drugs or drinking.β
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