Standing is allowed on the Shinkansen (Bullet Train) in Japan, but strictly within the Non-Reserved (Jiyuseki) cars or the vestibule areas between carriages. In 2026, if you have a non-reserved ticket and the train is completely full, you may have to stand in the aisle of the designated non-reserved cars (usually cars 1–3 on most Tokaido Shinkansen trains). On certain high-demand routes, such as the Hayabusa or Kagayaki, which are all-reserved, you cannot board without a specific seat assignment unless you have a "Standing Room Only" ticket, which is only sold when all seats are full. It is considered poor etiquette to stand in the aisles of Reserved (Shiteiseki) or Green Cars (Business Class). If you are a Japan Rail Pass holder, it is always recommended to make a free seat reservation at a "Midori-no-madoguchi" ticket office or a kiosk before you board to ensure a comfortable seat for your journey, especially during peak travel seasons like Golden Week or New Year.