A truck fire has caused significant disruption on a major Perth highway, prompting a traffic shutdown. Emergency services are currently at the scene managing the blaze and assessing the damage. The incident is causing major delays for commuters, with motorists advised to seek alternative routes. Authorities have not yet confirmed the cause of the fire, but investigations are underway. No injuries have been reported at this time. Live updates are being provided as the situation unfolds and crews work to clear the affected area.