Walking

In America, when two people are walking and approach one another, the custom is that you pass on the right. (Kinda like driving.) Such a custom usually prevents the desperate back-and-forth, which-way's-he-gonna-go dance you sometimes see here. Evidently (and I've asked about it), there is no custom of which side to pass. The tube station escalators ask you to stand to the right so people can pass on the left. Other notices ask you to stand to the left. Walking down the sidewalk can be a free-for-all.