International vehicle registration code registration plate. When the distinguishing sign is incorporated in the registration plate, it must also appear on the front registration plate of the vehicle. The requirement to display a separate distinguishing sign is not necessary within the European Economic Area, for vehicles with license plates in the common EU format which satisfy the requirements of the Vienna Convention, and so are also valid in non-EU countries signatory to the convention. Separate signs are also not needed for Canada, Mexico and the United States, where the province, state or district of registration is usually embossed or surface-printed on the vehicle registration
Vehicle registration plates of Australia each country has no particular relevance, and was allocated by ballot. Countries with many vehicles (such as the USA) are allocated two numbers. Before the blue D.C. plates were introduced, diplomatic cars in Canberra carried plates which had white letters on red. The numbers then correlated to the length of time the particular diplomatic mission had been in Canberra and the British High Commissioner's car proudly carried the plate D.C.1 The replacement arrangement is more egalitarian. State registration authorities issue CC plates to consular representatives in their relevant state capital. The ACT Government issues similar plates to representatives of international