Residents of Setagaya Ward, Tokyo, are suing the central government to stop the introduction of license plates that they claim will violate their privacy and are being forced on them.
The ward applied in June for a program under the transport ministry that allows cities to get their names printed on license plates.
The program, which began in 2004, has so far added 19 cities to the original 87. The ministry Friday added 10 more locations, including Setagaya, that will start appearing on plates by March 2015.