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 Austria Vehicle registration plates of Austria Austrian car number plates are mandatory vehicle registration plates displaying the registration mark () of motor vehicles in Austria. They are used to verify street legality, proof of a valid liability insurance and to identify and recognise the vehicle. The license plates are made of metal; the imprinted text is in black letters and digits on a white background. Since November 1, 2002 the common design comprises a blue section on the left with the EU circle of stars and the country code ('A') like other vehicle registration plates of the European Union. On the