Speeding and drink-driving are among the offences Gardai are looking out for in their roads operation this weekend.
The high-visibility campaign is in place until Monday.
The Road Safety Authority says these operations are important to remind motorists of the messages around bad driving behaviours.
Motorists are being warned that they are twice as likely to be involved in a serious collision on the Friday of a bank holiday weekend.
Three people have died on Cork roads so far this year.