Vehicle registration plates of the Republic of Ireland Vehicle registration plates of the Republic of Ireland In the Republic of Ireland, vehicle registration plates (commonly known as "number plates") are the visual indications of motor vehicle registration – officially termed "index marks" – which it has been mandatory since 1903 to display on most motor vehicles used on public roads in Ireland. The alphanumeric marks (or "registration numbers") themselves were issued by the local authority in which a vehicle is first registered. The current specification for number plates is the format YYY–CC–SSSSSS. Those issued from 1987 to 2012 had the format YY–CC–SSSSSS. The components are: Since 1991, the
Vehicle registration plates of the Soviet Union a unified standard for license plates for cars and motorcycles came into force in 1931. During the 1930s the format of plates never standardized. The first Soviet registration plates issued in 1931 has an "L-NN-NN" format, where L represents a Cyrillic letter and N being a number. Every registration is linked to a single vehicle, while motorcycle plates differ from those for cars in terms of dimensions. 2 license plates were issued to every vehicles: a frontal plate and a rear plate. Frontal plates for motorcycles were to be mounted along the front wing of a vehicle, while rear ones