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CBD-dominant cannabis does not influence reaction time, concentration, time perception or other skills associated with driving: Study

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“To the best of our knowledge, this is one of the first studies investigating the potential impact of smoking CBD-rich marijuana on road safety.”

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A Swiss study published in the journal, Forensic Sciences Research, has found that CBD-dominant cannabis, which is legal in Switzerland, does not impact driving ability.

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A recent study out of Australia found that the THC levels recorded in blood and saliva tests are inconsistent indicators of impairment.

Published in the journal, Neuroscience & Biobehavioral Reviews, that study concluded the use of per se limits as a means of identifying cannabis-impaired drivers should be reconsidered. “It seems there is a significant risk of unimpaired individuals being mistakenly identified as ‘cannabis-impaired’ (and vice-versa) under this approach,” researchers wrote.

In the Swiss study, all 33 participants exceeded the Driving Under the Influence of Drugs (DUID) legal limit for THC in blood after smoking CBD-rich marijuana, despite showing no symptoms of impairment.

Researchers also found that there were no significant differences between those who consumed the CBD flower or placebo in reaction time, motor time, behaviour under stress or concentration. Balance and coordination tests also indicated no significant differences.

“To the best of our knowledge, this is one of the first studies investigating the potential impact of smoking CBD-rich marijuana on road safety,” study authors wrote, adding that they recommend consumers refrain from driving for several hours after smoking CBD-dominant flower, as legal THC concentration limits may still be exceeded.

A U.S. study published earlier this year put 20 participants through common field sobriety tests and cognitive tasks after they consumed cannabis edibles or used vaporizers. Researchers concluded the amount of THC in someone’s system is not an accurate predictor of impairment.

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