Driving with an International Driving Permit
If you are driving with a valid International Driving Permit in Japan, you will have to carry a passport issued in the country which issued the International Driving Permit along with the International Driving Permit.
You can drive in Japan with an International Driving Permit for a maximum of one year, even if the International Driving Permit 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 spend at least three consecutive months outside Japan in between.
If you currently drive on an International Driving Permit and intend to stay in Japan for more than one year and want to keep driving after a year has passed, you will need to convert your driver's license to Japanese. The license conversion process may take several months depending on your situation Therefore, we strongly recommend you to consult OIST Resource Center to start planning your conversion process way before you become unable to drive on your International Driving Permit.