North american driver here, consider the following scenario.

1. You are approaching a 4-way stop sign intersection.
2. You reach the intersection after the perpendicular traffic does.
3. The perpendicular traffic becomes blocked by a pedestrian at the same time you reach the intersection.

Do you:

A. Proceed through the intersection given that the perpendicular traffic is blocked by a pedestrian even though you've arrived second to the intersection.

or

B. Wait until the perpendicular traffic goes (which happens after the pedestrian that is parallel to you crosses).

There's barely any information on this anywhere.