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 Indonesia Vehicle registration plates of Indonesia All motorized vehicles including motorcycles in Indonesia are required to have registration plates. The plates must be displayed in front and at the back of the vehicles. Except for some special cases (see below), every vehicle license plate in Indonesia follows the following format: LL NNNN LL where "L" are letters of the Latin alphabet, and "N" numbers from "0" to "9" (note that the first number is never a "0"). The first single or double letters denote the area of registration. This is followed by numbers, which can range from one to four digits.