A new traffic-light system is coming into effect on part of the Luas line in Dublin today.
The first automated Red Light Camera System will go live this morning at the junction of Blackhall Place and the Luas Red Line.
Motorists breaking red lights there will automatically receive three penalty points.
The Transport Minister, Paschal Donohoe, said it could be rolled out elsewhere in the future.
"I'm confident that it's going to make a very big impact on the number of incidents at junctions like this," he said at the launch earlier today.
"Based on its success and the effect that it has, we'll look at its roll-out elsewhere."