Two men have been arrested in Mandurah following two separate road rage incidents Tuesday afternoon.
It will be alleged around 5:20pm, a black Holden utility towing an electronic sign trailer was being driven erratically south on the Kwinana Freeway in Casuarina.
It's understood a man from Forrestfeild and a man from Dawesville began a verbal altercation with the driver of a Toyota Prado after they both stopped in the emergency lane.
Police say the two men exited their vehicle and approached the Prado, the man from Forrestfield approaching the driver with a hand gun.
The victim found a break in the traffic and drove away.
Half an hour later the black Holden utility stopped at the intersection of Mandurah Road and Allnut Street and the men exited the vehicle.
They approached a Toyota Landcruiser which was stopped behind them and approached the male driver.
The man from Dawesville entered the passenger seat while the other man approached the drivers side and smashed the window with the butt of a hand gun.
At this time a police vehicle attended the scene and arrested the men during which time a replica handgun was located.
A 36-year-old man from Forrestfield has been charged with two counts of being armed in a way that may cause fear, two counts of criminal damage or destruction of property and possessed a controlled weapon.
He will next appear in the Perth Magistrates Court July 7.
A 36-year-old man from Dawesville has been charged with reckless driving, one count of threats to injure, endanger or harm any person and possession of stolen or unlawfully obtained property.
He will next appear in the Perth Magistrates Court on June 14.
The investigation into this incident is ongoing and detectives ask that anyone with dashcam vision of the incidents contact Crime Stoppers by calling 1800 333 000 or by making a report online at crimestopperswa.com.au.