Yesterday marked five years since cannabis was legalized in Canada. When the third anniversary of cannabis legalization was marked, Libby Giesbrecht was finishing her master’s degree at the University of Regina, delving into police check stops and technology and asking questions about how cannabis-impaired driving statistics had developed since Oct. 17, 2018. She joins Gormley to discuss the five-year anniversary and her research in light of the present growth of cannabis-impaired driving police are reporting today.