Gardaí are warning motorists of the dangers of driving this morning after a night of drinking.

They say people could still be impaired by alcohol the 'morning after' St Patrick's Day and may be over the limit without realising it.

Sergeant Damien Hogan said gardaí would be patrolling the roads throughout the country this morning.

He said: "We are out this morning on the whole road network in marked and unmarked vehicles. In additional to mandatory breath-testing, I'd remind drivers they can be tested if they commit any road traffic offence.

"Please make that sensible decision this morning when using the roads - never, ever drink and drive."