Riding a motorcycle in Japan can be an amazing experience. But the rules are unique. Japan uses engine size and power to sort bikes into different legal classes. These classes affect your license, taxes, and even where you can ride. This guide will explain Japan’s two main legal systems for motorcycles. You will learn about licenses, registration, and what you need to ride legally.
How Japan Classifies Motorcycles: Two Legal Systems
Japan uses two separate sets of laws for motorcycles. They have different purposes. The Motor Vehicle Law (Sharyoho) handles licenses and vehicle registration. The Road Traffic Law (Dorokutsu) handles rules for operating a vehicle on the road. You must understand both.
Motor Vehicle Law: License Classes
This law splits motorcycles into three license classes. Your license must match the bike you want to ride.
Mopeds (50cc or less) These bikes have an engine under 50cc and power under 0.6 kilowatts. You can get a moped license at age 16. It only requires a simple written traffic law test. No riding skills test is needed. If you already have any other valid driver’s license in Japan, you can ride a moped with it. You do not need a special moped license.
Ordinary Motorcycles (Up to 400cc) This class covers bikes over 50cc but under 400cc and 20 kilowatts of power. To get this license, you must be at least 16 years old. You must take a proper motorcycle handling course. You must also pass a riding skills test on a closed course.
Heavy Motorcycles (Over 400cc) This class is for all motorcycles over 400cc and 20 kilowatts. You must be 18 or older to get this license. You also need to take a course and pass a skills test. For this test, you must use a sufficiently powerful motorcycle. A heavy motorcycle license also lets you ride ordinary motorcycles and mopeds.
Do You Need a Japanese License?
This depends on how long you will stay.
If you are a short-term visitor, you likely do not need a Japanese license. Japan accepts International Driving Permits (IDP) from countries that signed the 1949 Geneva Convention. Your IDP lets you rent any class of motorcycle available in Japan. However, if you want to buy a motorcycle in Japan, you must have a valid domestic Japanese license.
If you will be a long-term resident (over a year), you will need a Japanese license. You have two choices. You can apply for a new license like a local resident. Or, you can convert your home country’s license. You do this through the Japanese Automobile Federation (JAF).
Road Traffic Law: On-Road Vehicle Classes
The Road Traffic Law creates the rules for driving. It sorts motorcycles into four classes based only on engine size, not power. This affects where you can ride, your license plate, and your taxes.
Class 1: Gentsuki (50cc or less) Often called scooters, these bikes have engines up to 50cc.
- They use small white license plates, about 3/4 the size of a regular plate.
- No registration tags, shaken (inspection), or yearly inspection is needed.
- You cannot carry a passenger.
- You cannot use highways or motorways.
- You must stay in the left lane with a speed limit of 30 km/h (though many riders ignore this).
Making a Right Turn on a Gentsuki The law says you must stay left. To turn right, you can do a “Melbourne Turn.” Ride straight through the intersection. Then, stop and wait in the left lane of the road you want to turn onto. Turn when the light is green. This is how bicyclists often turn.
Class 2: Kogata (51cc to 125cc) This “small class” is split into two sub-groups.
- 51cc to 90cc: Uses a small yellow license plate with a triangular mark on the fender.
- 91cc to 125cc: Uses a pink license plate with a triangular mark.
- Like Gentsuki, they need no registration taxes or inspections.
- You cannot use highways.
- You are allowed to carry a passenger.
Class 3: Chugata (126cc to 400cc) This “medium class” is for most light motorcycles. It has two important subdivisions.
- 126cc to 250cc:
- Uses a regular white license plate with no border.
- Has lower city taxes.
- Pays a one-time registration tax.
- Needs no vehicle inspections (shaken).
- 251cc to 400cc:
- Uses a license plate with a green border.
- Has higher city taxes (same as large bikes).
- Pays registration taxes every two years for the first 10 years, then yearly.
- Must pass a bi-annual vehicle inspection (shaken).
Both sub-classes are treated as proper motorcycles. You can carry a passenger. You can also use highways and motorways.
Class 4: Ogata (Over 400cc) This “large class” covers all bikes over 400cc. The tax and inspection rules are the same as the higher Chugata tier (251cc-400cc). The main difference is the license required to operate them. Mandatory insurance costs are also higher.
Costs: Insurance, Tax, and Fees
All vehicles in Japan must have mandatory liability insurance. This includes mopeds. Riding without it has severe penalties.
Mandatory Liability Insurance
Insurance costs depend on location and bike size. Prices are grouped:
- Bikes below 125cc.
- Bikes from 126cc to 250cc.
- Bikes over 250cc (most expensive).
Important: This mandatory insurance is basic. It has major limits. It does not cover:
- Fire or theft of your bike.
- Injury or death to you or your passenger.
- Damage to your own motorcycle.
It only covers damage you cause to others. Even then, coverage has limits. For example, if a crash causes a death, the mandatory insurance may not cover all costs. You could pay over 2 million yen out of pocket.
Taxes and Fees
Exact costs change by city and over time. The figures below are general estimates.
City Taxes (Yearly):
- Sub-50cc bike: ~1,000 yen per year.
- Bike over 250cc: ~4,000 yen per year.
Registration Taxes:
- Lower tier Chugata (126cc-250cc): One-time fee of ~6,300 yen.
- Larger bikes (over 250cc): ~2,500 yen every year.
License Fees: Fees for courses and tests also apply. Contact a local driving school or license center for exact prices.
Key Takeaways for Riding in Japan
Japan’s system is detailed but logical. Your experience depends on your bike’s class.
- License First: Match your Japanese or IDP license to the bike class you want.
- Plates Tell the Story: The color and size of a bike’s license plate quickly show its class and limits.
- Highway Access: Only motorcycles 126cc and above can use highways.
- Passenger Rules: You cannot carry a passenger on any bike 50cc or less.
- Insurance is a Must: Get more than the basic mandatory insurance for real protection.
- Costs Vary: Remember that city taxes, registration, and inspection costs rise with engine size.
Final Thoughts
Riding in Japan is a wonderful way to see the country. But you must follow the rules. The system protects all road users. Start by checking what license you have or need. Then, choose a motorcycle class that fits your riding plans. Always get good insurance. Understanding these laws will keep you safe and legal. It lets you focus on the joy of the ride.
Before you go, check your country’s agreement with Japan on International Driving Permits. If you plan to stay long-term, visit the Japanese Automobile Federation (JAF) website for license conversion details. Have a great trip and ride safely.