Police from Southern Traffic Services conducted a static traffic operation yesterday (18 August) targeting drink and drug driving on the East Derwent Highway at the Jordan River Bridge in Bridgewater.
A 54-year-old woman from Old Beach who had a young child in the car returned a breath alcohol reading of 0.072.
She was arrested at the scene, immediately disqualified from driving, and will appear in court at a later date.
A 19-year-old L-plater from the Huon Valley who had previously been disqualified due to drug driving offences returned a positive roadside drug test and was found in possession of drugs.
He was arrested and will face court proceedings.
A 48-year-old man from New Norfolk was caught driving a vehicle that had been unregistered for four years.
His licence was subjected to a suspension, and he will be summoned to appear in court at a later date.
"These results highlight the ongoing need for targeted enforcement operations," said Sergeant Andy McShane.
"Driving under the influence of alcohol or drugs, or in unregistered vehicles, puts everyone at risk.
"We will continue to take strong action to keep our roads safe."
Police urge all motorists to make responsible decisions and remind the public that drink and drug driving will not be tolerated.
Incidents of dangerous driving can be reported can be reported to police on 131 444 or call triple zero (000) in an emergency. Reports can also be made via Crime Stoppers Tasmania on 1800 333 000 or at crimestopperstas.com.au. Information can be provided anonymously.