Japan is big on manners, and have posters on all subways highlighting the importance of respecting your fellow beings. Here are a few manner posters that appeared in the Tokyo subways between 1976 and 1982. Original link
The Seat Monopolizer (July 1976)
Inspired by Charlie Chaplin’s “The Great Dictator,” this poster encourages passengers not to take up more seat space than necessary.
Three annoying train monsters (October 1982)
The three annoying train monsters shown in the poster are Nesshii (the sleeping monster), Asshii (the leg-crossing monster), and Shinbunshii (the newspaper-reading monster).
Don’t throw chewing gum on the platform (September 1976)
Even Superman is no match for chewing gum discarded on the train platform.
Marcel Marceau (October 1978)
Marcel Marceau gestures toward a priority seat reserved for elderly and handicapped passengers, expecting mothers, and passengers accompanying small children.