Drugs are banned from Queensland and many Queensland drivers test negative for drugs, but not for cannabis.
The Queensland Drug and Alcohol Commission says they are “a concern” and warns of a “significant public health risk” if drivers fail drug tests.
Queensland Drug & Alcohol Commissioner John Henson said the drug is “not in any of the testing regimes in place in Queensland”.
“There’s no reason why they shouldn’t be tested, and they are,” he said.
“But I wouldn’t put them at risk for anything.”
Mr Henson says drivers who test positive should be cautioned, and motorists who test negative should be issued a warning.
“I would urge the driver to check with their doctor or pharmacist that there’s nothing in their system that might be causing them to be positive or negative,” he explained.
“If they are positive, it’s an issue of that particular drug being detected in their body.”
Drivers have been advised to avoid using cannabis and tobacco while driving, as well as alcohol.
Police advise people to “immediately stop any and all consumption” and to “exercise caution when driving” when under the influence.