Reserving an Oversized Baggage seat on the Shinkansen
The rule that catches visitors out is not a weight limit or a fee — it is that a large suitcase now needs a specific seat, booked in advance, on the Shinkansen lines running west from Tokyo. This is what counts as oversized, which trains apply it, and how to actually get the seat.
What counts as oversized
Add the three sides of your bag in centimetres. Over 160 cm and up to 250 cm, it is oversized baggage and needs a seat with an Oversized Baggage Area. At 160 cm or less nothing applies: it travels as ordinary hand baggage on every line. Over 250 cm it may not be brought on board at all, on any Shinkansen.
A typical 28-inch suitcase measures about 71 × 48 × 29 cm, which comes to 148 cm — under the threshold. It is the 30-inch and larger cases, and anything in a soft cover that adds a few centimetres a side, that cross 160 cm. Golf bags and skis usually do too, but they are exempt for a different reason (see below).
The general JR passenger tariff sits underneath this rule and applies everywhere: two free pieces per passenger, 30 kg each, no single item longer than 2 m, and 250 cm around. Umbrellas, canes, handbags and shoulder bags carried as personal effects are not counted in the two.
Which lines the reservation applies to
Only four: the Tokaido Shinkansen (Tokyo–Shin-Osaka), the Sanyo Shinkansen (Shin-Osaka–Hakata), the Kyushu Shinkansen (Hakata–Kagoshima-Chuo) and the Nishi-Kyushu Shinkansen. In practice this means every train that goes west from Tokyo: Nozomi, Hikari, Kodama, Mizuho, Sakura and Tsubame.
The Tohoku, Hokkaido, Joetsu, Hokuriku, Yamagata and Akita Shinkansen have no reservation system. JR East fits luggage areas at the ends of some cars and they are first come, first served. That is more relaxed but less certain: on a busy Tohoku Shinkansen the space can be full when you board.
Ordinary limited express trains, local trains and the Narita Express are all outside this system. Only the four Shinkansen lines above require a reservation.
Booking the seat
Smart EX and EX (the JR Central and JR West apps and websites) are the easiest route for a visitor: choose your train, then pick a seat from the Oversized Baggage Area map rather than the ordinary seat map. The seats are the last row of each car, and the space behind them is yours for the journey.
e5489 (JR West) works the same way for Sanyo and Kyushu trains. At a station, a green ticket machine will offer the oversized baggage option during seat selection, and a staffed Midori-no-Madoguchi window can book it for you — say "tokudai nimotsu" and show the size of your case.
The reservation costs nothing. It is a normal reserved seat with the luggage space attached, at the normal reserved-seat fare. There is no separate baggage ticket, and no fee for the space itself.
Book early on the Tokaido line. There are only a few dozen such seats per sixteen-car train, and on holiday weekends they are the first to go.
If you board without a reservation
A conductor will charge you ¥1,000 and direct you to store the bag where staff decide, which may not be near your seat. It is a charge rather than a fine, and you will not be put off the train, but it is entirely avoidable.
If you realise before departure, change the reservation rather than pay: with Smart EX or e5489 you can swap to a train with an oversized seat free of charge, and at a window staff will do the same.
What is exempt
Sports equipment, musical instruments, wheelchairs and strollers need no reservation whatever their size, as long as they are in a bag or a case. A golf bag, a ski bag or a cello therefore travels without booking anything, while a suitcase of the same volume does not.
A bicycle taken apart or folded into a dedicated bag, and a surfboard in a dedicated bag, are outside the reservation requirement under the JR tariff.
One thing that changed: the lockable deck compartments introduced with the system are no longer sold as reserved space. Since 1 July 2025 they are open racks anyone may use, and oversized baggage may not be stored in them — the Oversized Baggage Area behind the last row of seats is the only place for it.
Frequently asked questions
Does the Oversized Baggage seat cost extra?
No. It is a normal reserved seat at the normal fare, with the luggage space behind it included. The only money involved is the ¥1,000 charged on board if you bring oversized baggage without one.
Do I need a reservation on the Tohoku or Hokuriku Shinkansen?
No. The reservation system exists only on the Tokaido, Sanyo, Kyushu and Nishi-Kyushu lines. JR East fits open luggage areas on its Shinkansen and they are first come, first served, so arrive early on a busy train rather than book.
Is a golf bag oversized baggage?
Its three sides usually add up to more than 160 cm, but sports equipment in a bag or case is exempt from the reservation requirement, so no booking is needed. The general 250 cm and 30 kg limits still apply.
What if my bag is over 250 cm around?
It cannot be carried on any Shinkansen, with or without a reservation. Send it by takkyubin, which accepts up to 200 cm around and 30 kg, or use a highway bus or a rental car.
Check your own bag
All guides
Sources
- JR Central — Oversized baggage on the Shinkansen (Last checked 2026-09-09)
- JR West — Oversized baggage area seats (Last checked 2026-09-09)
- JR Kyushu — Oversized baggage rules on the Kyushu Shinkansen (Last checked 2026-09-09)
- JR West (Passenger Transport Regulations) — Article 308: free hand baggage, 2 pieces, 250 cm, 30 kg (Last checked 2026-09-09)
- JR East — Luggage areas on JR East Shinkansen (no reservation) (Last checked 2026-09-09)
- JR West / JR Central (press release, 2025-04-04) — Deck baggage racks opened without reservation from 1 July 2025 (Last checked 2026-09-09)
Last checked: 2026-09-09 — Rules and prices change. Coin locker dimensions in particular vary from station to station, so treat the sizes here as a guide and check the official page before you travel.