Yes, reservations are mandatory if you plan to bring "Oversized Baggage" onto the Tokaido, Sanyo, Kyushu, or Nishi-Kyushu Shinkansen lines. This rule was implemented to enhance passenger safety and comfort by providing dedicated storage space for large suitcases.
What is "Oversized Baggage"?
Baggage is classified as oversized if the total dimensions (Length + Width + Height) are between 160 cm and 250 cm.
How to Book:
When making your seat reservation at a ticket machine or window, you must specifically select a "Seat with an Oversized Baggage Area" (usually located at the very last row of each car).
If the dedicated seats are fully booked, you will need to choose a different train time. We recommend booking in advance, especially during peak travel seasons.