National Slowdown Day is running for 24 hours in an attempt to reduce speeding on roads.
It started at 7 o'clock on Monday morning, and runs until 7 am on Tuesday.
There'll be a more visible Garda presence on roads across the country to remind drivers of the dangers of speeding.
Operation 'Slow Down' day began this morning
Government Departments, Local Authorities, Public and private sector fleet operators are invited to participate and highlight to employees that whether driving for business or private purposes, to always drive within the speed limit pic.twitter.com/N8HJ2bae04— An Garda Síochána (@GardaTraffic) September 4, 2023
It comes after a continued increase in road deaths, with 127 people killed in road collisions so far this year.
Assistant Garda Commissioner for Roads Policing, Paula Hilman, says August has been an especially difficult month.
"A quarter of all road deaths have occurred within the month of August.
"Internally, we send out operational orders for a slowdown day, and when I signed that operational order on the 15th of August, it said there'd been 105 road deaths on Irish roads, and today, two weeks later, it's 127. I think that's really stark".