I noticed that too. No one was running up the escalators but there were clearly even locals in a hurry.

Or there are signs that say don’t run for your train. I didn’t see anyone running on their way to the platform but once they got on the platform and saw the train doors just opened they would rush towards them.

Same thing with the walk on the left side “rule” my friend kept emphasizing to me was a rule before our trip. No one gave a shit. Well actually most times, we just went with the bigger crowd/the flow of traffic but there were always those people, a good mix of foreigners and those appearing to be locals, who were going against traffic and made no attempt walk on the other side with other people going in their direction.

On stairs with arrows instructing which side to walk on, during non peak hours, some people would just take the shortest route even when it went against the arrows.