alt Hacker News> There are many human failures which are distinctly a vision issue and not attention related
Which are a tiny minority. The largest causes of crashes in the US are attention/cognition problems, not vision problems. Most traffic systems in western countries (probably in others, too, but I don't have personal experience), and in particular the US, are designed to limit visibility problems and do so very effectively.
That sounds more like a personal opinion, because I don’t think that data is particularly easy to objectively collect.
Regardless it is irrelevant to the point. Whatever the number may be, lapses in human visual perception are responsible for some crashes