A landmark study published in the latest issue of the Journal of the American Medical Association has shown that CBD does not impair driving, while moderate amounts of THC (the main intoxicating component) produce mild driving impairment lasting up to four hours.
This is the first study to illustrate the lack of CBD effects on driving and to also provide a clear indication of the duration of THC impairment.
Why this is so important: “With cannabis laws changing globally, jurisdictions are grappling with the issue of cannabis-impaired driving. These results provide much needed insights into the magnitude and duration of impairment caused by different types of cannabis and can help to guide road-safety policy not just in Australia but around the world. These results should allow for evidence-based laws and regulation for people receiving medical cannabis,” said Dr. Thomas Arkell, lead author on the study.
The study was led by the Lambert Initiative for Cannabinoid Therapeutics at the University of Sydney (Australia). Summary is available here and the full study is available in the current issue of JAMA here.