@notjustbikes loved this!

We were in Taiwan and Qingdao around the same time you were in Japan. TW platforms (metro and HSR) all have queue markings that people obeyed with almost no exceptions. In contrast, on the mainland (and back here in Vienna) people would frequently stand in front of train doors and block exiting passengers.

We debated whether this was habituation to the markings; to queuing generally; or a deeper cultural disposition maybe dating back to Japanese rule.