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 Estonia Vehicle registration plates of Estonia Vehicle registration plates of Estonia are divided into 18 categories, the most common of these (A1) is composed of three numbers and three letters (e.g. 123 ABC). Most registration plate types have black letters on a white background, and the plates are the same size and length as other European plates (520 × 113 mm). Previously the first of the three letters indicated the region of Estonia in which the car was registered; however, as of 2013, this is no longer the case. The third digit from the numbers indicated states when the car is