We absolutely line people up at stops; that’s what traffic is.

As much as the example stretches circumstances, everyone who’s driven is familiar with the number of traffic lights you often go through, and it can get you to think about the amount of interruption when this example is multiplied.

It can even go one further because pedestrians crossing other pedestrians don’t even have to stop to wait for perpendicular movement.

Obviously, pedestrians would handle very long distances worse, but navigation in dense areas is often a paced jog, not a sprint.