While there is no legal "ban" on talking, the established social etiquette in a Japanese subway is to remain as quiet as possible to respect the shared space of other commuters. Most passengers in Tokyo or Osaka engage in "silent travel," choosing to read, sleep, or use their smartphones quietly. If you must speak to a companion, you should do so in a very low, hushed whisper. Talking on a mobile phone while the train is in motion is considered extremely rude and is strictly prohibited by most rail operators; signs throughout the carriages will remind you to "set your phone to silent mode and refrain from talking." This cultural norm, known as meiwaku, is centered on avoiding being a nuisance to others. In 2026, this etiquette remains a cornerstone of the Japanese travel experience. For tourists, following this "quiet rule" is one of the easiest ways to show respect for local customs and ensure a harmonious environment for everyone on board the often-crowded transit systems.