I live in the middle of a medium sized city in the UK, and drive late at night a couple of times a year for various reasons (day out in another city, late gig, visiting friends, etc). On pretty much every artery road here, if someone was sitting in the middle of the road and I was travelling at 60mph, there's absolutely no chance whatsoever that I would see them. For example, see [0] - this is a major road within a few miles of Edinburgh that is completely unlit with a sidewalk/pavement on one side.
[0] https://www.google.com/maps/@55.8891577,-2.9952163,3a,75y,14...