Almost 4000 drivers were breath tested between 9pm and 2.30am from April 16 to 17, with officers locking down Grand Boulevard, the Burns Beach Road freeway exit, the top end of Ocean Reef Road and the intersection of Joondalup Drive and Wanneroo Road.
Almost 30 drink-drivers were charged with excess 0.08 and 0.05 offences. Those charged included a P-plater and a person driving with an open bottle of alcohol.
One person was found in possession of cannabis.
Seven drivers were caught with a suspended licence.
District superintendent Charlie Carver said he was unhappy with the results, especially due to the dangerous driving conditions on the night.
‘That Friday it was raining ” terrible conditions,’ Insp. Carver said.
‘It is not OK to go out and have a few pints after work and drive,’ he said.
He criticised the district for having too many suspended drivers.
‘With the results that have come out, this will be the start of many (operations) to come,’ he said.