Japan accepts only the 1949 Geneva version of the international driving permit. A 1968 Vienna permit, which is what most of Europe issues, is not valid there at all. The permit must carry the category A stamp or it authorises nothing on two wheels, and you may ride on it for a maximum of one year from the date you enter the country. Get either of those wrong and the trip ends at the rental counter. Checked August 2026; the National Police Agency and your prefectural Driver's License Center are the binding sources.
The permit rule, stated exactly
The Japan Automobile Federation, which issues and accepts the official translations, puts it without ambiguity on its page on driving in Japan with a foreign licence: holders of an IDP issued abroad under the 19 September 1949 Geneva Convention on Road Traffic may drive in Japan, and IDPs issued under other treaties, such as the 1968 Vienna Convention, are not valid in Japan.
The effective period is a maximum of one year from the date of entry into Japan. For someone who leaves and re-enters, validity runs one year from the re-entry, though foreign residents registered in the Basic Resident Register who leave and return within three months are treated differently. A police officer may ask for your passport specifically to count the days since you entered.
There is a second route that applies to six jurisdictions only. Holders of licences issued in Switzerland, Germany, France, Belgium, Monaco or Taiwan may ride in Japan by carrying an official Japanese translation of the licence together with the original. Same one-year limit, same re-entry rules. Every other country needs the 1949 permit.
On the category stamp, the Tokyo Metropolitan Police Department answers the question directly. Asked whether a permit stamped for category B allows a moped, its published answer is no — you need the category A stamp to ride a moped or a motorcycle under 50 cc. Check the stamps at the counter in your own country, because there is no way to fix this from Tokyo.
How Japanese licence classes divide up the machines
| Class | Machines covered | Notes for visitors |
|---|---|---|
| Moped (gentsuki) | Up to 50 cc, and since 1 April 2025 also machines up to 125 cc producing 4.0 kW or less | Requires the category A stamp on a 1949 IDP |
| Ordinary two-wheeled, small-size limited | Up to 125 cc | The commuter class, common on rental fleets |
| Ordinary two-wheeled | Up to 400 cc | Where most Japanese-market touring bikes sit |
| Large two-wheeled | Over 400 cc | Anything bigger, including imported litre bikes |
That 2025 change is genuinely new and worth understanding, because it changes what the smallest class means. The National Police Agency's notice on the revision of the moped vehicle classification confirms that from 1 April 2025, in addition to conventional machines of 50 cc or less, two-wheelers of up to 125 cc with a maximum output of 4.0 kW or less may be ridden on a moped licence. It is a response to the difficulty of building 50 cc engines that meet current emissions rules, not a relaxation of what a moped may do on the road.
The 400 cc line is the one that shapes the rental market. A great deal of Japan's domestic touring culture was built around 400 cc machines because that is where a licence class boundary sits, which is why the used market has an unusual depth of well-developed middleweights and why rental fleets are full of them.
Road rules that will catch a foreign rider out
Traffic keeps left, which most visitors expect. Several other things are less obvious.
- The default speed limits are low. Where no sign says otherwise, JAF's summary of Japanese traffic rules gives 60 km/h (37 mph) on ordinary roads and 100 km/h (62 mph) on expressways. Rural roads that look like 80 km/h roads are usually not.
- Mopeds make a two-step right turn. At larger intersections a moped does not turn right across traffic. It rides straight to the far corner, stops, reorients, and waits for the next green. Doing the European thing on a rented 50 is both illegal and dangerous.
- Alcohol is effectively zero. Japan's drink-driving enforcement is severe and extends to the people who supplied the drink or the vehicle. Treat any alcohol at all as disqualifying.
- Expressways are tolled and the entry rules differ by class. Mopeds are not permitted on them, and toll payment for a foreign-registered or rented bike needs sorting out in advance rather than at the barrier.
- Helmets are compulsory and the police check them. Bring one that fits rather than relying on rental stock, which runs to Japanese head shapes and small sizes.
If you are staying longer than a year
The one-year limit is absolute, not renewable by leaving for a weekend. Foreign licences stop being valid for driving in Japan one year after entry, translation or no translation.
The route for residents is the conversion process known as gaimen kirikae, applied for at the prefectural Driver's License Center. Two conditions must both hold: the foreign licence must still be valid, and you must be able to prove you stayed in the issuing country for at least three months in total after obtaining it. That second condition is the one that fails people — a licence obtained during a short trip home, then immediately used abroad, does not qualify.
The documents run to eight items, including an official Japanese translation of the licence, which JAF branches prepare. The translation is not a permission to ride by itself for most nationalities, and JAF is careful to say that providing it does not guarantee a successful conversion.
The honest assessment is that gaimen kirikae is an administrative afternoon plus a possible test, and it is worth starting in your first month rather than your eleventh. A rider who leaves it until the permit expires is off the road until the process completes.
Renting rather than importing
Almost every visitor rides a rented machine, and the rental market has its own conventions that sit on top of the legal ones.
Shops will ask for the original licence and the 1949 permit together and will photocopy both. Several will refuse a booking outright if the category stamp is missing, which is the point at which a rider discovers the problem rather than at the roadside. Book far enough ahead that a refusal is recoverable.
Expressway tolls are the second practical issue. Japan's toll network is dense and the electronic system is built around a card most visitors do not have, so ask the rental company how tolls are handled before you plan a route that uses them. A day of touring on ordinary roads at 60 km/h (37 mph) covers less ground than the map suggests, and that is a planning input rather than a complaint.
The third is timing. Japanese rental fleets are heavily booked in the two long domestic holiday periods, and mountain roads in Honshu and Hokkaido carry seasonal closures that have nothing to do with the weather on the day you arrive. Confirm both the bike and the road, in that order.
The trade-off with renting is straightforward. You get a machine that is registered, insured and roadworthy under Japanese rules, which removes most of the risk that catches riders elsewhere in Asia. You also get a bike you did not choose, usually in the 400 cc class, and a deposit structure that assumes you will drop it.
Frequently asked questions
Can I ride in Japan with a 1968 international driving permit?
No. Japan accepts only permits issued under the 1949 Geneva Convention. A 1968 Vienna permit is not valid there.
How long can I ride in Japan on an international driving permit?
A maximum of one year from the date of entry. If you leave and return, validity runs one year from re-entry, with different treatment for registered residents who return within three months.
Which licences can be used in Japan with a translation instead of a permit?
Licences issued in Switzerland, Germany, France, Belgium, Monaco and Taiwan, carried together with an official Japanese translation and subject to the same one-year limit.
What changed for mopeds in Japan in 2025?
From 1 April 2025, two-wheelers of up to 125 cc with a maximum output of 4.0 kW or less can be ridden on a moped licence, alongside the existing 50 cc machines.
What is the default speed limit in Japan?
Where signs do not say otherwise, 60 km/h on ordinary roads and 100 km/h on expressways.
Before booking anything, confirm which permit your own country issues using the guide to the international driving permit for riders, and run through the wider paperwork checklist for riding abroad. For contrast with a neighbouring region on a completely different permit convention, see Southeast Asia licence rules. Riders planning the route itself will find the ground covered in the Hokkaido guide and the overview of Japan's best motorcycle roads. On unfamiliar left-hand-traffic roads with signage you cannot read at speed, a JADO S6 riding system keeps turn prompts in your line of sight instead of on a phone in a pocket.
