All were caught under the influence over the bank holiday weekend.
Three motorists have been arrested in the midlands for driving under the influence of drugs.
A learner driver, who also had no insurance, was stopped by the Meath/Westmeath Roads Policing Unit on Sunday and subsequently failed a roadside drug test.
They tested positive for cocaine use.
Meanwhile in Laois, two drug drivers were arrested on Sunday, one of whom was already disqualified from driving.
Cannabis was discovered on a passenger in one vehicle.
All of the vehicles have been seized and court proceedings have commenced.
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