A major emergency is unfolding south of Perth following a terrifying rollover on a busy main road.
Three St John ambulance crews were deployed to the intersection of Mandurah Road and Safety Bay Road in Baldivis following a crash about 7.50am.
A teenager has since been rushed to Rockingham General Hospital where he is being treated for non life-threatening injuries.
The intersection is a busy, often chaotic dual-lane roundabout.
Peak hour traffic is heavy in the area, which is also expecting severe weather throughout Wednesday.
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