If I might add to this, right now the locomotives we're buying have very high restrictions, not only on noise but also on emissions. We could still reduce that, but there comes a point when it's useless. Also, most of the time we're running on welded rail. Welded rail reduces the noise extensively.
As we all said, the surrounding noise is worse than ours. That doesn't mean we're not trying to reduce it, but I don't think we're creating a problem. That would be for the agency to decide or resolve. But noise is part of the railway, and noise is a very subjective issue, like temperature. For me right now, it's 90 degrees here, and I'm sure it's not the same for you. It all depends on how you see it.
When I was a youngster, I was living right next to a sumping yard--24 hours a day. After two days my father said, “We're not going to live here; we're moving.” We couldn't sleep. But after a few years, when we went on holiday somewhere, we could not sleep because the noise was not there.
It's not a noise that is like a pitch noise, and it doesn't last long. When a train goes by, it doesn't last long. It's five or ten seconds. It's not like the autoroutes, where it's a constant pitch all day. That's bad. That's what can damage the ears. But our noise, I would say, is a friendly noise.
That's my point.