Shinkansen Oversized Luggage Rules: Do You Need a Special Seat?
This article is written by Tetsu, our Shinkansen Expert — the go-to expert for train routes, seating tips, and travel hacks.
As we introduced in this article last week, a new shared luggage space will be introduced on the Tokaido Shinkansen starting in July 2025. While that’s good news for many travelers, it has also raised questions about how oversized luggage is handled more broadly across Japan’s rail system.
So, before diving into new changes, let’s go back to the basics:
What is an "oversized luggage seat"?
On which Shinkansen lines do you actually need to reserve one?
Many travelers mistakenly think this rule applies to all trains—but that’s not the case. Here's a clear breakdown to help you avoid confusion and travel stress-free.
What Counts as Oversized Luggage?
JR (Japan Railway) defines luggage with total dimensions (length + width + height) over 160cm (up to 250cm) as "oversized" (tokudai nimotsu).
If you're traveling with such bags, your seat choice may be affected, but only on certain trains.
When Do You Need a Special Oversized Luggage Seat?
Only on the following Shinkansen lines:
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Tokaido Shinkansen (Tokyo–Nagoya–Kyoto–Osaka)
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Sanyo Shinkansen (Osaka–Hiroshima–Hakata)
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Kyushu Shinkansen & Nishi-Kyushu Shinkansen
On these routes, if you bring oversized luggage, you must book a seat with a designated oversized luggage space (located in the last row of certain cars).
These are called "Oversized Luggage Seats".
This rule applies only to reserved (non-green) cars.
No Special Seat Required on These Trains
On the following lines, you don’t need to reserve a special seat, even with large bags:
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Tohoku Shinkansen (Tokyo–Sendai–Aomori)
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Hokkaido Shinkansen (Shin-Aomori–Shin-Hakodate Hokuto)
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Joetsu Shinkansen (Tokyo–Niigata)
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Hokuriku Shinkansen (Tokyo–Kanazawa)
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Limited Express trains like the Azusa (to Hakuba), Thunderbird, Hida, etc.
💡 On these trains, large luggage can be stored in overhead racks or in available deck space available in each car.
Common Confusion Among Travelers
Some visitors try to book oversized luggage seats on all Shinkansen lines—even on routes that don’t require it.
This not only causes unnecessary confusion but also limits available seating.
If you're traveling on the Shinkansen lines heading north or northwest from Tokyo—such as the Tohoku, Hokuriku, Joetsu, or Hokkaido Shinkansen—you can simply use a regular reserved or unreserved seat. No special luggage seat is needed.
Summary
| Route / Train Line | Oversized Luggage Seat Required? |
|---|---|
|
Tokyo – Osaka – Hiroshima – Fukuoka (Tokaido / Sanyo / Kyushu Shinkansen) |
Yes (reservation required) |
|
Tokyo – Sendai – Nagano – Kanazawa – Niigata – Shin-Hakodate Hokuto (Tohoku / Hokuriku / Joetsu / Hokkaido Shinkansen) |
No |
|
Limited Express Trains (e.g. Azusa, Thunderbird, Hida, Fuji Excursion) |
No |
Final Tips
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Always store luggage in the overhead racks or designated spaces.
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Avoid blocking aisles or doors.
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Valuable items should be kept with you at all times.
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When in doubt, check with JR staff at the station—they're very helpful.
Travel smart and enjoy your Shinkansen journey across Japan!
What is shinkansen-ticket.com?
Shinkansen-Ticket.com is a Japan-based travel agency specializing in booking Shinkansen and limited express train tickets—including high-demand routes that are often difficult to secure. With nearly a decade of experience, we’ve built a reputation for reliable, flexible, and traveler-friendly service.
We provide both QR code-based tickets for easy station access, ideal for last-minute bookings, and physical paper tickets, which can be delivered to your home abroad, hotel, major post offices, or even a friend’s residence across Japan—perfect for carefully planned itineraries.
Our expertise in Japan’s rail system allows us to offer customized support with a deep understanding of routes, connections, and seating options—including oversized luggage seats, scenic views, and group arrangements.
Trusted by thousands of repeat customers and partnered with numerous hotels and travel agencies, we regularly assist in arranging train tickets for hotel guests and tour clients across Japan.
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Seat guide
Reserved Seat (Ordinary Reserved Seat)
Your seat is reserved and secured when you book your tickets, allowing you to head to the station with peace of mind.
Think of it as "economy class" seating.
Green Reserved Seat
Enjoy better seats and free blankets. Popular among Japanese business people, executives, and those who prefer a comfortable travel experience.
Consider it "business class" seating.
GranClass
Known as the "First Class" of Shinkansen seats.
Available only on the Hokuriku and Tohoku Shinkansen lines, these seats offer airline-like amenities and meals (only on select trains).
They are the most expensive option.
Unreserved Seat
You can take any open seat in the unreserved cars on the departure date (no departure time will be indicated on your ticket).
This is the best option if cost is your priority and you are traveling during less crowded seasons or times.
Tetsu
The Shinkansen Expert
With a passion for all things rail, I specialize in helping travelers navigate Japan’s extensive train network—especially the Shinkansen. From how to book reserved seats to choosing the right side for Mt. Fuji views, I provide expert guidance on riding Japan’s iconic bullet trains with ease.
Having supported countless international travelers, I understand the unique questions and challenges that come with using Japan’s rail system for the first time. My goal is to make your journey faster, smarter, and stress-free—no matter where you're from or where you're headed.