A new scientific review of available evidence on the relationship between cannabis and driving finds that most research “reported no significant linear correlations between blood THC and measures of driving,” although there was an observed relationship between levels of the cannabinoid and reduced performance in some more complex driving situations. The report, which has not … Continue reading There’s ‘No Linear Relationship Of Blood THC To Driving,’ Study Finds, Calling Into Question Many State Marijuana-Impaired Driving Laws