A four-wheel-drive rolled onto its roof on the Kwinana Freeway at Baldivis but luckily no one was injured.
The rollover happened on the Kwinana Freeway near Mundijong Road in Baldivis shortly before 6.30am on Wednesday.
Some northbound lanes were blocked causing some extra delays for drivers this morning.
All lanes have re-opened and traffic is now moving at its normal pace.