Taking a Big Suitcase on the Shinkansen: The Oversized Baggage Rule

A lot of Japan trips from Singapore follow the same shape: fly into Tokyo, take the Shinkansen to Kyoto or Osaka, fly home from Kansai. The flight is booked months ahead; the train is often bought at the station, with the big check-in case that just came off the belt.

That is where a rule catches people. On the Shinkansen between Tokyo, Osaka and Kyushu, a large enough suitcase needs its own reserved space, booked with your seat. Without it you pay a fee, and there may be nowhere proper to put the case. Here is how the rule works, how to tell whether it applies to you, and what to do instead.

The rule, in plain terms

Central Japan Railway (JR Central), which runs the Tokaido Shinkansen, publishes the rule on its luggage information page. As it stands today:

• Where it applies: Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen trains — the corridor from Tokyo through Shin-Osaka and Hakata to Kagoshima-Chuo. JR Central says reservations are not required on conventional (non-Shinkansen) lines.
• What counts as oversized: baggage whose length, width and height add up to more than 160 cm, up to 250 cm. Anything over 250 cm in total cannot be brought on board at all.
• What you have to do: reserve a "seat with an oversized baggage area" when you buy your ticket. It costs the same as an ordinary reserved seat.
• What happens if you don't: JR Central charges a baggage fee of 1,000 yen, including tax, to passengers travelling with oversized baggage without a reservation.

Baggage at or under the 160 cm total needs no reservation. The general allowance has not changed either: JR Central still allows two pieces of baggage per passenger, each up to 30 kg, within the 250 cm total.

Is your suitcase "oversized"? Measure it, don't guess

JR Central notes that its 160 cm line is almost the same size as the point where international flights start charging for oversized bags, though that varies by airline. So a case that checked in without trouble at Changi can still sit close to the line, and "it was fine on the plane" is not the same as "it is under the limit on the train".

The only reliable way is a tape measure, at home, before you leave:

1. Stand the case up and measure the height at its tallest point, wheels and the retracted handle included.
2. Measure the width at the widest point, including any side handles or feet.
3. Measure the depth at the thickest point. If the case expands, measure it the way you will actually travel with it — full, on the way home, is usually fatter than empty on the way out.
4. Add the three together and write the number down somewhere you will see it when booking.

If you are close to the line, treat the case as oversized and book the space — the seat costs the same either way. And if you are buying a case with Japan trips in mind, add up the published measurements of any case you are considering, ours included, before you decide.

Where each size of bag goes on the train

JR Central's page sorts luggage into three groups, and knowing which one you are in tells you where your case will spend the journey:

• Small and medium bags (160 cm total or less, such as a backpack or a cabin-size case) go at your feet or on the overhead rack.
• Large suitcases and heavy items that are still within the 160 cm total can go in the baggage storage area on the deck, the vestibule at the end of the car. No reservation is needed, but the space is shared with everyone else on the car and may already be full. On some trains that area has a cable you pass through the handle and lock with a contactless transport IC card.
• Oversized baggage (over 160 cm, up to 250 cm) goes in the space behind the last row of seats in certain cars. Only the passengers who reserved those last-row seats may use it — JR Central says that space is shared between the five passengers booked into that back row.

Two details matter more than they look. First, non-reserved cars and some reserved cars have no oversized baggage seats at all, and JR Central says oversized baggage may not be brought on if you are in a seat without one. A non-reserved ticket and a big case do not go together on this line. Second, the space behind the back row belongs to whoever booked those seats, even when it looks empty.

How to book the seat

According to JR Central, you can reserve a seat with an oversized baggage area:

• At a JR ticket office — tell the staff member you want a seat with an oversized baggage area.
• At a reserved-seat ticket machine or online, by selecting "Seat with an oversized baggage area". JR Central lists the Tokaido Sanyo Kyushu Shinkansen Online Reservation Service, JR-WEST Online Train Reservation and JR-KYUSHU Train Reservation.
• With a Japan Rail Pass — ask for it at the ticket office, or use JAPAN RAIL PASS Reservation.

Book it early. These seats are few: JR Central lists 57 of them on a 16-car Nozomi. On a busy departure the ordinary seats can still be available after every baggage seat has gone. Travelling as a family with two big cases? Book the baggage seats when you book the train, not at the platform.

What if you board without a reservation?

The published consequence is the 1,000 yen fee. The practical problem is bigger than the fee: the oversized area behind the back row belongs to the people who booked it, and aisles and doorways are not storage. On a full train you can end up standing with the case at the end of a carriage, and between Tokyo and Osaka that is a long way to hold on to a suitcase.

If the baggage seats on your train are gone, a later train with one is usually better than boarding and hoping.

Which lines this does and does not cover

The reservation rule described here, as published by JR Central, covers the Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen. Japan's other Shinkansen lines — such as the routes north of Tokyo and the Hokuriku line towards Kanazawa — come with their own operators' luggage guidance. Do not assume the same rule applies, and do not assume it doesn't: check that operator's own page for the train you are actually taking.

Strollers, sports equipment and musical instruments are treated separately. JR Central says the oversized baggage rules do not apply to them, but a reservation is still required if you want to use the oversized baggage area. For getting that kind of gear onto the flight in the first place, see flying with sports equipment and bulky items.

The alternatives: don't take the big case on the train at all

For many itineraries the best answer is not a better seat but a lighter train journey.

• Send the case ahead. Luggage delivery from hotel to hotel is widely used in Japan. JR Central itself points to LUGGAGE EXPRESS, a paid service it lists as needing a reservation, where you leave your baggage at a hotel or station and it is delivered to your destination hotel the same day. Ask your hotel's front desk too: if they can arrange courier delivery to your next hotel, find out what time the bag must be handed over and when it will arrive. The trade-offs are similar to sending bags ahead instead of paying excess baggage: you need a day bag with everything you cannot be without until it arrives.
• Leave the big case where you will come back to. If Tokyo is your start and end, a hotel that holds bags for returning guests lets you take a small case for the side trip. The same thinking as what to do with your bags between checkout and a late flight applies: get the closing time and collection rules in writing before you walk away.
• Split the load between travellers. Two medium cases that each stay under the line can go on the rack or in the deck area without a reservation, where one enormous shared case cannot. How to divide things sensibly is in splitting luggage between travellers.

Plan for the way home, not the way out

For many Singapore travellers Japan is also a shopping trip, and a case that leaves Changi half-empty often comes back through Shin-Osaka stuffed, expanded and heavier. A case that was comfortably under 160 cm on the first train can be over it on the last one if it expands, so measure again before that leg. If your whole trip is built around bringing things back, packing for a trip where you know you will buy a lot covers the space problem, and the weight side at the airport is in avoiding the overweight surprise at check-in.

Look after the case on station days

A Japan rail day means long transfers, stairs where the lift is at the other end, and a lot of rolling on hard floors. Lift the case by its carry handles rather than the telescopic one, and don't drag it up steps on its wheels.

If you travel with a Vox Journey case, our warranty is five years on the shell and wheels and covers manufacturing faults — a shell that cracks or separates in normal use, a wheel that seizes, fails or parts from its housing. Scuffs and dents from handling are not manufacturing faults. A new case is best checked before its first trip, while our 7-day return window from delivery is still open; what to check when a new suitcase arrives has the routine.

The short version

• On the Tokaido, Sanyo, Kyushu and Nishi Kyushu Shinkansen, baggage over 160 cm in total (length + width + height) needs a seat with an oversized baggage area, booked with your ticket. Over 250 cm cannot go on at all.
• The seat costs the same as a normal reserved seat. Travelling with oversized baggage without one means a 1,000 yen fee and no guaranteed place for the case.
• Measure your case at home, wheels and handles included, and again after shopping if it expands.
• Book the baggage seat early — there are few of them — and never pair a big case with a non-reserved ticket on this line.
• Other operators' Shinkansen lines have their own guidance; check before you go.
• Often the better answer is to send the case ahead or leave it at a hotel you are returning to.

If you are choosing a case with trips like this in mind, our luggage guide for Singapore travellers covers the decision, and both of our cases are in the Vox Journey shop. If you want to ask which one suits the way you travel, message us on WhatsApp.