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According to a new study published in the journal Addiction, drivers in Canada who tested positive for THC do not cause a significant increased risk of being responsible for non-fatal car accidents.

University of British Columbia researchers compared crash responsibility in drivers who tested positive for THC with drug-free drivers from 2010 to 2016, NORML reported.

“In this multi-site observational study of non-fatally injured drivers, we found no increase in crash risk, after adjustment for age, sex, and use of other impairing substances, in drivers with THC<5ng/ml,” the study mentioned. “For drivers with THC>5ng/ml there may be an increased risk of crash responsibility, but this result was statistically non-significant and further study is required.” By contrast, the study found that there “was a significantly increased risk for drivers who used alcohol, sedating medications, or recreational drugs others than cannabis.”