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 Nebraska which adopted an uncoded ABC 123 serial format in 2002. Vehicle registration plates of Nebraska The U.S. state of Nebraska first required its residents to register their motor vehicles in 1905. Registrants provided their own license plates for display until 1915, when the state began to issue plates. All state-issued plates were made of steel until 1947 when aluminum plates were introduced. With the exception of 1945, all plates have been issued in pairs since 1922. In 1956, the United States, Canada and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association