A driver traveling over the sped limit and also on cannabis was caught in Buncrana yesterday.
The Buncrana Road Policing Unit detected the driver travelling at 121kph in Burt yesterday afternoon in a 100kph zone.
The driver was also tested and proved to be positive for cannabis.
A Garda spokesman said “Speed can and does kill. Driving under the influence can and does kill.
“One poor decision made when getting/whilst behind the wheel of a car could be the death of you or someone else.”