Gardaí have warned of possible road blocks to Dublin Airport and the Port Tunnel as fuel price protests are poised to cause a second day of disruption on roads.
Protesters told gardaí that the disruption may begin at 6.30am.
Meanwhile, multiple vehicles have been left overnight on roads in Dublin city centre with protests set to resume shortly, gardaí added.
They said that disruptions to public transport may also continue this morning.
Demonstrators driving tractors, lorries and trucks formed slow-moving convoys yesterday in a number of counties.
Several of the convoys converged on Dublin city centre and a rally was held on O’Connell Street at 3pm.
Speaking at the event, one of the organisers, James Geoghegan, said 28 different protests had taken place across the country.
A large number of the vehicles remained in the city centre last night and gardaí said the protest had had a “significant impact” on traffic, including on the north and south quays, the Naas road, the Red Cow Interchange and sections of the M50.
There were delays and suspensions of service on the green line of the Luas and Dublin Bus also experienced what it called “severe disruption”.
Gardai also said last night that there were significant delays due to slow-moving convoys, both northbound and southbound, on the M8 at Cashel and the M18 at Ennis.
Demonstrators driving tractors, lorries and trucks formed slow-moving convoys in a number of counties
Speaking about the protests, Tánaiste Simon Harris said: “Everyone has a right to protest in a democracy, 100% no doubt about that, but I would also just say these aren’t consequence-free actions.”
He said he had heard reports of a range of individuals impacted by the disruption, including healthcare workers and small business owners.
Mr Harris added that: “We shouldn’t pit sectors against sectors.”
“This is a moment of national challenge, and no one sector is more important than the other, and we have to work through this,” he said.
He added that the government was “engaging intensively” with bodies representing a variety of sectors including farmers, farm contractors and hauliers.
Additional reporting by PA