How to Reserve Shinkansen Seats with Oversized Baggage Areas
Guide to reserving JR Shinkansen oversized baggage seats (Tokusoku Bins) for 160-250cm suitcases, booking procedures, and penalty fee avoidance.
- ✓The 160–250 cm Size Threshold: Suitcases whose total dimensions (length + width + height) measure between 161 cm and 250 cm legally require reserving an oversized baggage seat on Tokaido, Sanyo, and Kyushu lines.
- ✓Free Reservation Policy: Reserving a seat with an oversized baggage area costs ¥0 extra over standard reserved seat fares if selected during ticket booking.
- ✓The ¥1,000 Unreserved Penalty: Bringing oversized bags aboard without a prior reservation incurs a ¥1,000 onboard penalty fee and relocation to a conductor-assigned space.
Traveling aboard the Tokaido, Sanyo, or Kyushu Shinkansen with large rolling luggage requires understanding JR oversized baggage regulations. Under rules implemented by JR Central, JR West, and JR Kyushu, passengers traveling with suitcases measuring between 161 cm and 250 cm in total dimensions must reserve dedicated baggage storage seating before boarding.
Reserving these seats in advance costs nothing extra, whereas boarding without a reservation incurs an onboard penalty fee and potential luggage displacement.
Size Classification: Measuring Your Suitcase
| Bag Size Category | Dimensions (L + W + H) | Typical Suitcase Size | Reservation Required? | Storage Location |
|---|---|---|---|---|
| Standard / Carry-on | Under 160 cm (63 in) | 20-inch to 26-inch bags | ❌ No Reservation Needed | Overhead rack above your seat |
| Oversized Baggage (特大荷物) | 160 cm to 250 cm | 28-inch to 32-inch checked suitcases | ✅ MANDATORY RESERVATION | Behind last row / Vestibule locker |
| Prohibited Cargo | Over 250 cm or >30 kg | Commercial shipping crates | ❌ Strictly Forbidden | Must ship via door-to-door courier |
Baggage Seats Compared: Rear Area vs Vestibule Compartments
When booking through the SmartEX mobile app or JR automated ticket vending machines, you will be prompted to choose between two luggage seat categories across both Ordinary and Green Cars:
1. Seat with Baggage Area (荷物置場つき)
- Position — The very last row of seats in the train car (e.g. Row 15 or Row 20).
- Advantage — The empty floor gap behind your seatback is exclusively reserved for your suitcase. You can recline your seat fully and monitor your bag throughout the entire journey.
2. Seat with Baggage Compartment (荷物コーナーつき)
- Position — A secure double-decker luggage rack located in the vestibule entryway between passenger cars.
- Security Lock — Equipped with an electronic card reader and a wire tether cable. Lock your suitcase using your IC transport card (Suica/Pasmo/ICOCA) or a 4-digit numeric passcode.
How to Book Oversized Baggage Seats for Free
Booking an oversized baggage seat is 100% FREE—it costs the exact same price as a standard Reserved Seat.
[!WARNING] The ¥1,000 Penalty: If you board a Nozomi, Hikari, or Kodama train with a 28-inch bag without this reservation, the train conductor will levy an immediate ¥1,000 carry-on penalty and relocate your suitcase to a designated security storage locker.
Special Exemptions: Baby Strollers, Wheelchairs, and Sports Gear
Japanese railway regulations provide specific exemptions for essential travel equipment:
- Baby Strollers (ベビーカー): Strollers are officially exempt from mandatory luggage reservations. However, standard overhead racks cannot safely hold open or bulky strollers. We strongly recommend reserving a last-row baggage seat for maximum stroller convenience.
- Bicycles — Permitted free of charge provided the bike is disassembled, wheels removed, and completely enclosed within a specialized nylon Rinko Bag (輪行袋).
- Musical Instruments & Skis/Snowboards: Guitars, cellos, and snowboard bags in protective soft cases are exempt, provided they can be stood upright securely.