“In the largest trial to date involving experienced users smoking cannabis, there was no correlation between THC (and related metabolites/cannabinoids) in blood, OF [oral fluid], or breath and driving performance. … The complete lack of a relationship between the concentration of the centrally active component of cannabis in blood, OF, and breath is strong evidence against the use of per se laws for cannabis.”
Researchers concluded, “[W]e found no predominant pattern suggesting that behaviors and attitudes were more tolerant in states with liberal marijuana policies.”
The Nevada legislature advanced measures amending marijuana penalties for minors, rescinding per se driving thresholds for THC, and permitting consumers to obtain cannabis products via curbside pickup.
Drivers testing positive for the presence of THC in blood do not possess a significantly increased risk of being responsible for a non-fatal motor vehicle accident, according to data published in the journal Addiction.
The enactment of adult use marijuana regulation in Colorado and Washington is not independently linked to an increase in traffic fatalities, according to a study published this week by the National Bureau of Economic Research.
The enactment of statewide laws regulating the adult use and sale of cannabis is not associated with subsequent changes in traffic fatality rates, according to an analysis of traffic safety data published today in the American Journal of Public Health.