A Michigan traffic safety law that prohibits the operation of a motor vehicle by persons who possess any presence of THC in their blood, regardless of whether or not they are behaviorally impaired by the substance, may not be strictly applied to state-qualified medical cannabis patients.
The imposition of so-called per se drugged driving laws, which create new traffic safety violations for drivers who operate a vehicle with the presence of trace amounts of certain controlled substances and/or their inert metabolites (byproducts) in their blood or urine, do not reduce incidences of traffic safety deaths. That’s the conclusion of a just-published study by economists at the University of Colorado, Denver and Montana State University. The study is available from the Institute for the Study of Labor (IZA) in Germany as a Discussion Paper. Since 1990, 11 […]