Turkmenistan

Summary
Name Turkmenistan
Note Unfortunately the driver's license and international driving permit (IDP) issued in Turkmenistan is not valid to drive in Japan.
I will explain if anybody who has the driver's license issued by Turkmenistan is allowed to drive in Japan.

Unfortunately, any driver's license and internaitonal driver's permit issued in Turkmenistan is not valid to drive in Japan.

To drive a vehicle legally in Japan, you will need a driver's license. The necessary documentation needed to issue a deriver's license does not depend on the driver's Nationality but depends on which country the driver's license is issued from and which country the driver resides in.

Unfortunately the driver's license and international driving permit (IDP) issued in Turkmenistan is not valid to drive in Japan.

Japan is only affiliated in the 1949 Geneva Convention and Turkmenistan is not affiliated in the 1949 Geneva Convention.

Also, Japan does not have a individual treaty regarding driving in each others country.

It is very confusing but, there are countries that issue a international driving permit (IDP) very similar to the 1949 Geneva Convention even though the country is not affiliated to the 1949 Geneva Convention.
In that particular international driving permit (IDP), it may state that Japan is a affiliated under the 1949 Geneva Convention, and seems as if it is valid to drive in Japan. But Japan is very strict regarding the international regulation, therefore that particular international driving permit (IDP) is not valid to drive in Japan.

Turkmenistan is affiliated with 1968 Vienna Convention. Japan is not affiliated with the 1968 Vienna Convention.
Any international driving permit (IDP) issued under the 1969 Vienna Convention is not valid to drive in Japan.

Japan is only affiliated with the 1949 Geneva Convention, therefore the international driving permit (IDP) issued under the 1949 Geneva Convention is only valid to drive in Japan.

However, Turkmenistan is not affiliated with 1949 Geneva Convention, therefor Turkmenistan cannot issue any International Driving Permit(IDP) valid in Japan.

In the future, if Turkmenistan affiliates under the 1949 Geneva Convention, the international driving permit (IDP) under the 1949 Geneva Convention in the proper format and issued by the respectable government branch or assigned agent will be valid to drive in Japan.

On the internet, you may come across a fake international driver's license that is presented as if it is valid to drive in Japan.
These fake international driver's license is not valid to drive in Japan.
For more information regarding fake international driver's license please click here.