21 motorists have been caught speeding so far today.
A motorist in Westmeath is among those who have been caught speeding today.
Gardaí are out in force for National Slow Down Day, and have clocked 81 drivers exceeding the speed limit, including a motorist doing 95km/h in an 80 zone in Glasson.
The operation will be in effect until 7am tomorrow.
Justice Minister Helen McEntee is asking people to slow down: