Drivers are being asked to slow down and have a safe weekend.
The Road Safety Authority's issued the warning as too many people have already died on the roads this year.
The number of people killed is up by 15 on the same time last year, with 126 deaths.
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Three people were killed on County Monaghan roads in two separate collisions in the past 48 hours.
RSA spokesperson Liz O'Donnell wants no deaths on the roads this bank holiday weekend:
