A vehicle registration plate, also known as a number plate, license plate, or licence plate, is a metal or plastic plate attached to a motor vehicle or trailer for official identification purposes. All countries require registration plates for road vehicles such as cars, trucks, and motorcycles. Whether they are required for other vehicles, such as bicycles, boats, or tractors, may vary by jurisdiction. The registration identifier is a numeric or alphanumeric ID that uniquely identifies the vehicle or vehicle owner within the issuing region's vehicle register. In some countries, the identifier is unique within the entire country, while in others it is unique within a state or province. Whether the identifier is associated with a vehicle or a person also varies by issuing agency. There are also electronic license plates.
Number plates in Belgium are driver specific, meaning that they are transferred to a new vehicle from the owner's previous one.
In Ireland, vehicle registration 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 themselves are issued by the local authority in which a vehicle is first registered.
All motorised road vehicles in India are tagged with a registration or licence number. The Vehicle registration plate number is issued by the district-level Regional Transport Office (RTO) of respective states — the main authority on road matters. The number plates are placed in the front and back of the vehicle. By law, all plates are required to be in modern Hindu-Arabic numerals with Latin letters. The international vehicle registration code for India is IND.
A vehicle registration plate, also known as a number plate, license plate or licence plate, is a metal or plastic plate or plates attached to a motor vehicle or trailer for official identification purposes. The registration identifier is a numeric or alphanumeric code that uniquely identifies the vehicle within the issuing authority's database. In Europe most countries have adopted a format for registration plates that satisfies the requirements in the Vienna Convention on Road Traffic, which states that cross-border vehicles must display a distinguishing code for the country of registration on the rear of the vehicle. This sign may be an oval sticker placed separately from the registration plate, or may be incorporated into the plate. When the distinguishing sign is incorporated into the registration plate, it must also appear on the front plate of the vehicle, and may be supplemented with the flag or emblem of the national state, or the emblem of the regional economic integration organisation to which the country belongs. An example of such format is the common EU format, with the EU flag above the country code issued in EU member states.
The registration plates of cars in Norway are maintained by the Norwegian Ministry of Transport and Communications. As in most countries, cars are identified only by number plates read visually. Each plate is a legal document that both identifies the vehicle and permits its use, and shall be returned to the registration authority when the vehicle is no longer in use.
Vehicle registration plates are mandatory number plates used to display the registration mark of a vehicle registered in France. They have existed in the country since 1901. It is compulsory for most motor vehicles used on public roads to display them.
Vehicle registration plates are the mandatory number plates used to display the registration mark of a vehicle, and have existed in Spain since 1900. Most motor vehicles which are used on public roads are required by law to display them. The government agency responsible for the registration and numbering of vehicles is the Directorate General of Traffic.
Malaysian registration plates are displayed at the front and rear of all private and commercial motorised vehicles in Malaysia, as required by law. The issuing of the number plates is regulated and administered by the Malaysian Road Transport Department or JPJ.
In South Korea, the Surface Transportation Bureau of the Ministry of Land, Infrastructure and Transport (MOCT) oversees the design and issue of license plates for motor vehicles. The international code for South Korea is ROK.
Standard Bulgarian vehicle registration plates display black glyphs on a white background, together with – on the left-hand side of the plate – a blue vertical "EU strip" showing the flag of Europe and, below it, the country code for Bulgaria: BG.
Since Ukraine's independence in 1991, the country has used four main systems of vehicle registration plates.
Thailand's vehicle registration plates are issued by the Department of Land Transport (DLT) of the Ministry of Transport. They must be displayed on all motorized road vehicles, as required by the Motor Vehicle Act, B.E. 2522 and the Land Transport Act, B.E. 2522. The plates vary in design, colors and dimensions according to the type of vehicle, but usually display a registration number and the vehicle's province of registration. Specifications are given in Ministry of Transport regulations. Current style started in 1975 for most vehicle types, but with small changes in 1997, and 1997 for motorcycles
The vehicle registration plates of Cyprus are composed of three letters and three digits. A simple incremental numbering system is used; numbers run from 001 to 999 per letter sequence (alphabetic), so that, for example, the plate to be issued after MAA 999 would be MAB 001. However, registrants may be allowed to choose a number from available numbers in the extant letter sequence.
An Israeli vehicle registration plate, or an Israeli license plate, is a vehicle registration plate, a metal or plastic plate or plates attached to a motor vehicle or trailer, used in Israel for official identification purposes.
Vehicle registration plates in Trinidad and Tobago are categorised using prefixes based on the type of vehicle and feature up to four succeeding digits. Registration plates in Trinidad and Tobago are supposed to be either white figures on a black background or black figures on a white background. All motor vehicles that are operating in the roads of Trinidad and Tobago are required by law to have a registration plate affixed to the front and rear of the vehicle at all times except during very specific situations. This current system has been present for over 40 years.
Vehicle registration plates of Armenia have black characters on a rectangular white background. They are composed of two or three numbers, two letters in the middle, and two other numbers. At the left side is located the international code "AM" with an oval car plaque and, sometimes, the national flag. Starting from 6 August 2014 a new design of license plates was implemented. The license plates have a national flag on the left side, a security hologram and a machinery readable Data Matrix Code.
Vehicle registration plates are the alphanumeric plates used to display the registration mark of a vehicle, and have existed in the United Kingdom since 1904. It is compulsory for motor vehicles used on public roads to display vehicle registration plates, with the exception of vehicles of the reigning monarch used on official business.
Vehicle registration plates, commonly known as number plates, are the mandatory alphanumeric or numeric plates used to display the registration mark of a vehicle.
Libya requires its residents to register their motor vehicles and display vehicle registration plates. Current plates are European standard 520 mm × 110 mm.
Gibraltar 
