Police have issued more than 32,000 pre-charge warnings for petty crimes, resulting in a double-digit drop in charges before district courts.
Figures released under the Official Information Act reveal that since pre-charge warnings came into effect on September 12, 2010, they have accounted for 10 per cent of all arrests.
During that period 322,130 charges were laid by police nationally, with 32,931 resolved via the warnings.
The warnings are used when an offence justifies an arrest, and the offender is taken to a police station for processing.
A sergeant or a higher-ranked officer can decide to release a person with a warning when the arrest meets "evidential sufficiency requirements", said Assistant Commissioner Nick Perry.