The Road Safety Authority is reminding motorists that they may not be safe to drive first thing this morning if they've consumed alcohol overnight.
It takes our bodies one full hour to process just one unit of alcohol.
Those who believe "soakage" or " a strong coffee" will clear their system of alcohol are greatly mistaken.
Gardai are out in force across the country this bank holiday weekend with checkpoints mounted on hundreds of routes this morning.
Brian Farrell is Communications Manager with the RSA.
