“This study suggests that medical cannabis, used as prescribed, has a negligible impact on simulated driving performance.”
Topic: Driving
Those who tested positive for cannabis possessed a lower risk of accident (OR = .80) than controls.
Scientists concluded, “The lack of correlation between driving and blood THC fits within emerging evidence that there is not a linear relationship between the two.”
Investigators concluded, “Medical cannabis may have minimal acute impact on cognitive function when prescribed and used as directed.”
Despite the lack of impairment, subjects still tested positive for trace levels of THC — potentially putting them at risk of violating certain traffic safety laws.
Overall, officers incorrectly classified 49.2 percent of the placebo group as impaired based upon their FST performance.
The study’s author identified “no statistically significant impact of cannabis sales on serious injury/fatal crashes” following retail commercialization.
Legalization was not associated with any significant changes in traffic-related crashes or injuries, investigators reported.