Your questions with respect to what could change the behaviour of people who drive impaired are relevant. I referred earlier to alcohol prevention campaigns. I asked my students how they view that. Those who said they don't drive impaired did not say that it was because they are afraid of being caught by police. They said they wanted to avoid killing someone. Prevention campaigns were what had encouraged them to change their behaviour. On the other hand, those who said they do drive while impaired said that they know a road that is not patrolled by the police. In any case, prevention is what had the effect of changing people's behaviour.
Furthermore, you are perfectly right: there is a need to raise everyone's awareness, including seniors and young people, with respect to the myriad of causes. In that regard, there are some new ads that I really like. I don't know whether they are being shown in all the provinces. You must be familiar with them. The message is that driving a vehicle and opting for a specific type of behaviour is, first and foremost, a matter of choice.
It has already been stated that there is no magic bullet. So, we have to ask ourselves what will result in the greatest improvement, in terms of our ability to manage the problem from a legal standpoint. There are measures which are immediate, and certain. In terms of behavioural change, having the police arrest someone, seize their vehicle for 24 hours, and give them demerits points, is more effective than a lengthy process the result of which remains unknown.
As regards repeat offenders, you're absolutely right: there are some. To my knowledge—and Mr. Therien can certainly provide you with more accurate information than I—national registries are not consistent across the board at the present time, which makes it impossible to properly identify these individuals and do something about them.