FOUR drivers have tested positive to methamphetamines and cannabis during a police operation in the past week.
The drivers were detected when Wellington Highway Patrol conducted a series of roadside oral fluid tests in Wellington Shire.
Police are urging drivers not to drive when under the influence of drugs.
A 21-YEAR-old methamphetamine-drugged learner driver will face court after failing a roadside drug test.
Wellington Highway Patrol intercepted the Melbourne man driving along the Princes Highway at Flynn on Tuesday afternoon and conducted a roadside oral fluid test.
He returned a positive reading for methamphetamines and a police search of the vehicle allegedly found a small amount of methamphetamines and other drugs.
The learner driver was also driving without a fully licensed driver sitting in the front passenger seat.
The man was taken to Sale police station and later released pending summons for alleged traffic and drug offences.