That's a very good question.
Of course we want to know more and better document the problem. Let me come back to what I said earlier: noise is harmful to health, and we have already gathered very good evidence on this subject. In Montreal, we are one step ahead of several other major Canadian cities in the collection of city-specific data. That being said, work is currently under way in several cities, including Toronto and Vancouver, to do the same documentation work. It is important to collect data locally if you want to take action that is appropriate for the region. It is of course possible to use data from other associations, but it should be possible to rely on specific data. In Toronto, for example, will the proportion of people who say they are very bothered by noise be 2%, 3%? This remains to be verified.
What is essential, as I said at the end of my presentation, is to have access to the data in order to do follow-up. This is a real need. This is not about research, but rather what is called surveillance in public health. A sufficient understanding of what is happening with respect not only to noise levels generated, but also to air movements is required to ensure that health interventions can be implemented. For example, it is necessary to understand the increase in certain types of trajectories and the movements of arriving and departing airlines, as well as the potential impact of all this, before looking for ways to work on them. Once again, the need for data is paramount.
The next step is to get the right people around the table, who should agree on a noise control policy at both the provincial and federal levels. This does not necessarily require more data, but action. Data must be integrated into work at the political level.