60 people were arrested for driving under the influence of drugs
Some 196 people were arrested for driving under the influence of drink and drugs over St. Patrick's weekend.
There were 12 serious collisions on Irish roads over a five day period.
A Garda operation was in place from last Thursday morning to Tuesday of this week with Gardaí carrying out 678 checkpoints.
196 people were arrested for driving under the influence - 136 for drink, 60 for drugs.
Over 1800 drivers were detected speeding, with one driver doing 111 in a 60 zone in Trim, Co. Meath.
Fixed Charge Offences for other road offences during this period included: 152 for use of mobile phones, 99 for learner drivers driving unaccompanied and 55 for not wearing a seatbelt.
12 serious collisions took place that resulted in 17 serious and life-threatening injuries.
Gardaí have reiterated their call to never drink and drive, and to slow down.