Tolls on ten routes around the country, including the M50 and the Dublin Tunnel, are set to increase in the new year.
From 1 January, most car tolls are increasing by 20 cent per journey and heavy good vehicles tolls by 30 to 50 cent per journey.
On the M1, M7, M8, N6, N25 at Waterford and N18 Limerick Tunnel, the toll for cars is up 20c to €2.30.
On the M3, it is up 10c to €1.70, and on the M4 there is a 20c increase for cars to €3.40.
Tolls for the Dublin Tunnel are to increase by €2 for cars at peak times, with Transport Infrastructure Ireland saying the move is aimed at preserving "capacity for heavy goods vehicles accessing Dublin Port".
TII said it was basing the increase on the annual rate of inflation that was recorded at the end of August, which it put at 6.3%.
On the M50, toll prices are increasing by between 20-40 cent, depending on vehicle type and whether drivers use toll tags, video accounts or are unregistered.
For example, an unregistered car will pay a toll of €3.70, but a driver with a tag will pay €2.50.
It will be the second increase in tolls in less than a year, after toll charges on most of the country's national road network were increased in July.
Reacting to new of the toll increase, the President of the Road Haulage Association said hauliers will now have to pay nearly €7 per journey, which is far too expensive.
"For safety we are asked to use motorways but it's too dear," said Eugene Drennan.
"€7 per truck and some trucks would pass through multiple tolls in a day. This will force hauliers to avoid the tolls as much as possible. It's just too expensive."
