All drivers involved in a collision will be breathalysed, as part of Dorset's summer drink-drive campaign.
The force will test anyone involved in crashes until the end of June, irrespective of whether they are suspected to be over the limit.
Last winter, 90 people were arrested in Dorset on suspicion of drink-driving - down from 103 in the previous year.
There will be increased patrols as part of the latest crackdown with officers warning offenders could face prison.
Ch Insp Bob Nichols, head of Dorset Police's traffic unit, said: "I am particularly keen to appeal to drivers under the age of 30.
"Our statistics show that drivers under 30 are continuing to risk their lives, and the lives of other innocent road users, more than any other age group by drinking and driving.
"I'd encourage the friends or family of any driver that has drunk alcohol and is planning on driving to do everything they can to make sure that person does not get behind the wheel."
Anyone caught drink driving faces a 12-month ban and up to six months in prison.