International vehicle registration code system is used for vehicles belonging to the diplomats of foreign countries with license plate from the host country. That system is host country-specific and varies largely from country to country. For example TR on a diplomatic car in the USA indicates Italian, not Turkish. Such markings in Norway are indicated with numbers only, again different from international standards (e.g. 90 means Slovakian. International vehicle registration code The country in which a motor vehicle's vehicle registration plate was issued may be indicated by an international licence plate country code, formerly known as an International Registration Letter or International Circulation Mark.
Vehicle registration plates of Thailand The prefix characters are translated via code-matching into two alphanumeric Roman characters. The country name THAILAND is displayed in capital letters below the registration number, and the numerical provincial code is shown in the bottom right. The plates are black on white. They are required for transport into Burma, Cambodia, southern China, Laos, Vietnam, Malaysia, and Singapore. However, they are not legal inside Thailand, and must be removed upon re-entering the country. The current international vehicle registration code for Thailand, adopted 1954, is "T". The DLT's authority does not cover vehicles used by the king, the Royal Thai Police, the