A 27-year-old Esperance man was convicted in his absence of trespassing and driving with meth in his system.
Daniel Terrence Buckley was fined by two justices of the peace in Esperance Magistrates Court on May 22.
Police prosecutor Senior Constable Carolyn Petersen told the court Buckley was at a recycling facility in Chadwick at 7:25pm on February 23, 2019.
He had driven into the yard and was looking through unlocked trucks.
Buckley told an employee that he was a police officer and needed to check their license, Snr Constable Petersen said.
The employee spoke to his manager before police arrived.
Buckley began yelling and changed his story, telling police the employees were his friends, that his friend had worked there and that he was helping his friend drive the truck into the yard.
Snr Constable Petersen described Buckley's behaviour as "erratic".
Buckley was resistant to police and refused to walk to the police vehicle.
He later apologised and said he was "going through a rough time".
Snr Constable Petersen said at 9:35pm the same night, police stopped Buckley driving on Sims Street.
Buckley tested positive for methamphetamine.
For the driving offence he was fined $200 and charged $390.30 in court and analysis fees.
For the trespass, Buckley was fined $300 and charged $205.30 in court costs.
Buckley entered the courtroom after being convicted and disputed the trespass charge.
He took particular issue with the claim he told an employee he was a police officer.
"That's just a load of crap," Buckley told the justices of the peace.
Justice of the Peace Thorp said Buckley should have "showed up at the right time" and would now need to apply to a magistrate in June to have the trespass conviction set aside.