Living in a right-hand drive country (steering wheel on the right, drive on the left), I was hoping to validate my theory of the unwritten "walk as you drive" cultural norm. So far, in the U.S. and China, it largely held true that people tended to also walk on the right when on the sidewalk or going up and down stairs. While the "walk as you drive" rule generally holds up on the ground floor of the KLCC mall, it does not hold up on the sidewalk and especially not the stairs. Here in KL, the norm is "whatever is most inconvenient for other oncoming pedestrians."
There is no real pattern. If you are walking down stairs and someone turns the corner and starts coming up the same stairs, they stop. They don't change sides. Sometimes they come up/down side by side with someone else and look disapprovingly if you don't wait at the landing for them to pass.
On second thought, maybe they do walk as they drive here...
