Gardai will be out in force this October bank holiday, targeting a number of offences including drink driving.
Officers say they will be on the lookout for "four lifesaver offences" - Intoxicated driving, speeding, use of mobile phones and seat belt offences.
A number of Mandatory Intoxicant Testing checkpoints have already been carried out over the Halloween long weekend, including in Tallaght on Saturday when two arrests were made for intoxicated driving.