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 the Republic of Macedonia which Greek border guards cover the letters "MK" on Macedonian vehicle plates with a sticker, in Greek and English, reading: “Recognized by Greece as FYROM”. Vehicle registration plates of the Republic of Macedonia Macedonian registration plates of vehicle consist of a two-letter region code, followed by a 4-digit numeric (before 2012 was 3-digits) and a 2-letter alpha code (e.g. SK 2345 MG). There is a blue field on the left side with the international country code for Macedonia - MK. License numeric code contains combination of four digits (0-9), while two letter alpha code is made of combination of letters