From the outset, in terms of drug-impaired driving, as I said in my comments, we're taking a precautionary approach, the premise being that no level of drug impairment or no level of ingestion of drugs is appropriate if you're planning on getting behind the wheel of your car. As you quite rightly point out, the science with respect to impairment by drugs is not as clear as it is with respect to impairment by alcohol, which is why, with respect to Bill C-46 and the per se limits we have been taking and continue to take expert advice from the best scientific evidence that the drugs and driving committee present to us. They are part of the Canadian Society of Forensic Science. We're going to continue to empower and embrace recommendations that come from them as the science continues to evolve in terms of the levels that have been set. We have taken advice from them, as well as from levels that have been set in other jurisdictions.
On June 13th, 2017. See this statement in context.