I think that simplifying or repealing some of the defences around bolus drinking or around the intervening drug offence will significantly speed up trials around impaired driving. Adding the two-hour time frame in terms of the offence does this. In terms of the intervening consumption, there is a defence to that if there was no anticipation that a police officer would come to one's home or an anticipation that there was a presumption that they would be under the influence of drugs. The two-hour time limit put around the time of driving is to eliminate the possibility of those defences moving forward.
On June 13th, 2017. See this statement in context.