Codes used in several countries
ZW on a licence plate
ZW is an area code in 3 countries. The plate's style and country code tell them apart.
Austria
ZW 123ABCode details →Customs police (Zollwache)
No longer issued
Germany
ZW-AB 1234Code details →Zweibrücken (Rhineland-Palatinate), Südwestpfalz (Rhineland-Palatinate)
Norway
ZW 12345Code details →Finnmark
named after Alta
Austria
Germany
Norway