Gardai made two arrests after a busy day at one Dublin checkpoint.
In total, six vehicles were seized by the Dublin Castle Roads Policing Unit on the one day while operation the checkpoint in Swords.
But it was a bad day in particular for two of those motorists - who got themselves arrested after failing a roadside drug test.
One of those tested positive for cocaine, with a Garda spokesperson explaining: "Gardaí from the Dublin Castle Roads Policing Unit conducted a Checkpoint in Swords over the weekend.
"Two drug drivers were arrested and six vehicles were seized during this operation for a variety of offences."
It is an offence to refuse to provide a saliva sample. Gardaí may also carry out an impairment test.
In certain circumstances, you may be brought to a Garda station for a blood sample.
It is illegal to drive under the influence of drugs (including prescription drugs) if your driving is impaired to such an extent that you don't have proper control of the vehicle.
If convicted of this offence, the minimum disqualification on a first offence is 4 years and 6 years for a second or subsequent offence.
For certain drugs – cannabis, cocaine and heroin – it is illegal to drive if you are over the specified limit, even if your driving is not impaired. If you are convicted of being over the specified limit, you will be disqualified for at least one year on a first offence and at least 2 years for second or subsequent offence.
A first offence can be a drink or drug driving offence.
