Cumbria Police are targeting drug-impaired motorists as part of their summer drink-drive campaign.
The force has warned motorists that officers will be increasing breath tests and stop checks from 30 June.
During last year's campaign 63 people were arrested - 20 of whom had been involved in collisions.
A spokesman said officers would also be targeting so-called "morning after" drivers, who think it is safe to driver the day after a drinking session.
Ch Insp Kevin Greenhow said: "Throughout the summer months the incidents of drink driving increase as people go out to enjoy the weather and a few drinks.
"We are not trying to stop people enjoying themselves, we just want drivers to act responsibly.
"If you are going out, nominate a driver who agrees not to drink before you set off and always remember that if you've been drinking the previous night you are likely to be over the limit the following morning."