POLICE on the Limestone Coast are cracking down on drug drivers with three Mount Gambier residents testing positive to illegal substances at the weekend.
It was a busy weekend on roads in the area for SA Police, with officers also reporting two people for drink driving.
Mount Gambier Police Sergeant Derek Long said he was concerned by the increasing amount of motorists disregarding laws by driving under the influence of drugs.
"It's becoming increasingly alarming to think we have people driving on our roads under the influence of drugs," he said.
"The tests are completely random so to keep getting positive results really concerns us."
At 3.30am on Saturday, police stopped a car on Crouch Street North and the 41-year-old female driver provided a positive roadside oral drug test for methamphetamine.
She then provided a further positive sample at the police station, which will be sent off for analysis.
A 32-year-old male motorist stopped for a mobile driver screening test on Penola Road in Mount Gambier also returned a positive drug result.
After a search of the car, police allege cannabis and tablets, that are believed to be a controlled drug, were also located.
Further testing is to be conducted on the tablets.
The man was issued with a driver direction notice for a period of 24 hours.
A Limestone Coast highway patrol also reported a man for driving disqualified while under the influence of a drug on Friday night.
The 22-year-old Mount Gambier man was stopped on Mount Gambier's North Terrace.
He was also issued with an immediate loss of licence for a drink driving offence that occurred in June.
The man will be summonsed to appear in court.
Drug and drink driving is a major contributing factor in serious injury and fatal road crashes, according to Sgt Long.
He said a driver under the influence of illicit drugs had impaired judgement while behind the wheel, similar to drink drivers.
"It's frightening really - there's no doubting the dangers of driving while under the influence of drugs," he said
"People need to realise we are doing random drug tests more regularly and as technology is vastly improving, making it more effective to do the tests, these random tests will be issued more often.
"They already are and as you can see people are getting caught.
"It's just not worth it - it is dangerous and people are putting the lives of others at risk."