I wondered why train cars of subway in Europe were smaller than ones in Japan inspite of people there were bigger than Japanese. Same in Athens and Paris. Additionally I found that seats in Metro in Paris were what we called "box seats" on which people sit face to face having the window on their side. When I got on a metro in Paris, I had to turn a handle at the door clockwise and when I got off, I had to turn it counterclockwise!! It was a big culture shock. Perhaps there were no "rush hours" there.