Thank you, Mr. Chair.
I'll be very brief.
We mentioned that regulation is one step, but what we need to do is look at some of the factors, some of the issues, especially in terms of the technology. It's also something that will help.
But we have to look at the human factor. Two conductors, one conductor, I raise the issue. But now what we hear about is conductor fatigue. Can you tell us a bit about it? From your perspective, how important is that in terms of safety?