Sussex Police started its summer crackdown on drink and drug driving in the early hours of this morning (Saturday 31 May).
Anyone driving erratically or who is suspected of being under the influence of drink or drugs while behind the wheel should expect to be stopped and prosecuted, the force said.
Those charged with drink or drug driving offences in June will have their names published online and made available to the media, it added.
Posters are also being put up across at sites where offenders were stopped during the force’s Christmas campaign.
The posters are intended to highlight to potential offenders that they are not safe from being caught if they get behind the wheel while over the limit.
Chief Inspector Natalie Moloney said: “Throughout the year we look for drivers who have been drinking or have taken drugs but from tomorrow there will be extra patrols out specifically focusing on these kinds of offenders.
“There is no excuse for driving while over the limit or after taking drugs and there will be no leeway given to anyone we find doing it.
“I would be delighted if we did not catch one drink or drug driver in June if I could be confident that meant that was no longer an issue in Sussex.
“Unfortunately there remains a hard core of people who continue to put themselves and others at risk by driving when they are in no fit state to and we will do all we can to get them off the roads to keep people safe.”
The force will be using drug testing equipment at each custody suite across the county to see if motorists who have been arrested have cannabis in their systems.
Officers will also tweet about people stopped on suspicion of drink or drug driving offences throughout June, giving brief details such as when and where the motorists were pulled over.
In June last year more than 3,500 motorists were breathalysed and more than 140 people were arrested.
Road users in Sussex can text officers on 65999 with details about people they suspect of drink or drug driving or visit www.operationcrackdown.co.uk.
If you know someone is driving while over the limit call 999.