New South Wales Consolidated ActsA police officer or person authorised by the Authority may seize any number-plate:
(a) that is attached to:(i) a registrable vehicle the registration of which has expired not less than 15 days before the date on which the number-plate is seized, or(ii) a registrable vehicle the registration of which has been cancelled, or
(b) that has been used in contravention of a provision of the regulations that is prescribed by the regulations.