[kazinator]

If walking is just 50% faster than riding (i.e. walkers go at half the speed of the escalator), but requires 50% more space, then it's a break-even situation for capacity. And a win for latency.

[csours]

In traffic, it is not about the latency, it is about the jitter.

[PhasmaFelis]

It required quite a bit more than 50% more space, assuming you want to avoid people being constantly kicked in the shins.

[mapt]

Edited post with math.

[kazinator]

It doesn't look like a very busy time, in that video. I count about 10 people standing on one of the escalators while there are 8 walkers going by them. There are some irregular gaps among the walkers; more walkers could easily be accomodated; it's just not busy enough; I don't really see a backlog of people waiting at the bottom; everyone is just marching naturally toward the escalator and getting on.