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 Gibraltar in series D. The European flag is also now featured, along with Gibraltar's international vehicle registration GBZ. Vehicle registration plates of Gibraltar The vehicle registration plates of Gibraltar are similar to those of the United Kingdom, with the same colours and typeface, which conform to 1998 European standard design. The international vehicle registration code for Gibraltar is GBZ (Great Britain and Northern GBG is used for Guernsey. Number plates in Gibraltar have the same measurements as those in the UK: From 1912 to 2001 Gibraltar number plates consisted of the letter 'G' (for Gibraltar) followed by a series of digits