Buncrana traffic corps detected a driver traveling at 113 kmph in an 80 kmph zone over the weekend.
Conditions on the evening were dangerous due to heavy hail showers and a greasy road surface.
The driver recieved a fixed charge penalty notice and three points.
Two other drivers were detected using their mobile phones while driving.
Gardaí have reminded people to be #PhoneSMART,
S: Switch it off
M: Make a journey
A: Arrive alive
R: Reactivate
T: Talk