https://www.japan-guide.com/e/e2022.html

International Driving Permits
Foreigners can drive in Japan with an International Driving Permit (IDP) for a maximum of one year, even if the IDP is valid for a longer period. It is not possible to drive on an International Driving Permit again after a year has passed unless you return to your home country for at least three consecutive months in between.

นั่นเป็นกฎหมายของการใช้ใบขับขี่สากล  ซึ่งเป็นที่แพร่หลายสำหรับเกือบแทบทุกประเทศทั่วโลก
ในทุกประเทศในยุโรป ในสหราชอาณาจักร  และอีกหลาย ๆ ประเทศ  ก็เป็นเช่นนั้น

https://www.gov.uk/driving-nongb-licence/y/a-foreign-student-studying-in-great-britain/non-european-union
You can drive in Great Britain for 12 months if you’ve got a non-European Union (EU) driving licence or international driving permit
If your driving licence is from a ‘designated country’ you can then apply to exchange it for a GB licence up to 5 years after becoming a GB resident.

If you don’t have a driving licence yet, or your licence is from a ‘non-designated country’, you’ll first need to apply for a provisional GB licence. You can then take a driving test and apply for a full licence once you’ve been in Great Britain for at least 6 months.

The ‘designated countries’ are: Andorra, Australia, Barbados, British Virgin Islands, Canada, Falkland Islands, Faroe Islands, Hong Kong, Japan, Monaco, New Zealand, Republic of Korea, Singapore, South Africa, Switzerland, Zimbabwe.