The driver was stopped after smashing the 120km/h speed limit on the M9 on Sunday.
A garda tweet said: "A driver was caught doing 181kmph on the M9 this afternoon. When stopped a roadside drug test was administered which driver failed.It comes as drug driving in Ireland has soared by 80% since the lockdown was brought in - despite a massive 70% drop in traffic. Roads Policing Chief Paul Cleary said the level of intoxicated motorists has not dipped even though all pubs are closed.
"Unfortunately, we are not seeing a corresponding reduction in the number of people being detected driving under the influence of an intoxicant - either drink or drug driving.
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