When the bell chimes, it's too late (1977) - This poster, which depicts Cinderella rushing from the ball at the stroke of midnight, is meant to warn passengers against the danger of trying to rush into the train after the departure chime sounds.
Wasureemon (1980) - Doraemon offers a friendly reminder not to forget your umbrella. The text at the bottom is a suggestion to write your name, address and company name (or school name) on your possessions.
No smoking during non-smoking hours (1980) - The "Journey to the West" monkey urges passengers not to smoke on the platform during the designated non-smoking hours (7:00-9:30 AM and 5:00-7:00 PM).