Vehicle license plates of Switzerland, are composed of a two-letter code for the canton and a number with up to 6 digits. The rear plates also display two shields with the flags of Switzerland and the respective canton. In 1987, the optional long format for rear plates, which had been abolished in 1972, was reintroduced.
The vehicle license number plates are assigned to the car owner and not to the vehicle. If the owner changes the vehicle, the same vehicle license number plates are attached to the new vehicle. The previous vehicle receives the vehicle license number plates of the new owner. It is also possible to own two (or more) vehicles that share the vehicle license number plates: the plates are physically unmounted from one vehicle and mounted on another, provided the vehicles in question are owned by the same owner of the vehicle license number plate. In some cantons, when vehicle license number plates are returned and retired, they are made available again after a certain time.
Until 2020, vehicles in the Italian enclave of Campione d'Italia were registered in Ticino, but are now to be registered in the Italian town of Como.
Swiss diplomatic plates display one of the prefixes "CD", "CC" or "AT", followed by a canton code, a serial number and a code for the country or organization. Low serial numbers are reserved for ambassadors or the head of an organization and their deputies.
Civilian Federal vehicles had registration plates composed of the Swiss shield followed by the letter "A" (short for "Administration") and a number with up to five digits. The first digit indicated the department. In 2004 these plates were replaced with normal cantonal plates.
The Post, Telegraph and Telephone company (PTT) and the Swiss Federal Railways (SBB) were part of the federal government until 1997/98. Their vehicles had registration plates composed of the Swiss coat followed by the letter "P" (short for "Post") and a number with up to five digits. When they became independent companies, the P-plates were replaced with cantonal plates in 2004.