A driver was clocked speeding 66KPH over the speed limit on Friday evening.
Gardaí from Buncrana Roads Policing Unit detected a car travelling at 166KPH in a 100KPH speed zone.
The driver was arrested and they were charged to appear in Court.
Meanwhile, a driver was caught doing 145km/h in a 100km/h zone on the N15 in Coolcholly, Ballyshannon.
Gardaí are appealing to road users to keep a constant eye on your speed this Bank Holiday weekend and every time you drive.