No, as of March 16, 2024, smoking is completely banned on all Shinkansen trains, including the Tokaido, Sanyo, and Kyushu lines. Previously, some trains featured small, ventilated smoking rooms between cars, but these have been decommissioned and repurposed to hold emergency drinking water or "business booths." This change was made to promote public health and align with Japan's increasing health-consciousness. In 2026, travelers who need to smoke must use the designated smoking rooms located on the station platforms or concourses before boarding. Smoking in your seat or in the restrooms will result in immediate removal from the train and a fine, as sensors are highly sensitive and announcements in multiple languages remind passengers of the ban.