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 Norway Vehicle registration plates of Norway The registration plates of cars in Norway is maintained by the Norwegian Ministry of Transport and Communications. As in most countries, cars are identified only by number plates read visually. The plates are legal documents that both identifies the vehicle and permits its use, and shall be returned to the registration authority when the vehicle is no longer in use. The current alphanumerical system (two letters followed by four or five numbers) was introduced in 1971. The design of the plates remained the same until 2002, when the road authorities decided on a new font