A crash on Tonkin Highway has caused traffic chaos near Perth Airport, with debris scattered across lanes and motorists forced from their vehicles.
The crash happened southbound before Dunreath Drive, with the left lane closed by incident response crews.
Police officers and an ambulance crew are on the scene.
Motorists are urged to allow for a safe merge and take care through the area as traffic builds.
There is more drama on Tonkin Highway with a breakdown southbound near Morley Drive in Bayswater leaving a car stranded on the left median strip.
Traffic is heavy on approach.
A breakdown in the Northbridge Tunnel westbound is also causing delays, with the right lane blocked.
Motorists are urged to allow for a safe merge.
Another breakdown on Roe Highway southbound at the Tonkin Highway overpass in Kewdale also closed the centre lane.
It has since been cleared but traffic remained slow on approach.
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