UPDATE, 7.50am: The crash has been cleared but traffic is still heavy heading into the city.
EARLIER: A VEHICLE has rolled and several cars have crashed on the Kwinana Freeway in Baldivis bringing traffic to a crawl heading into the city this morning.
The crash was reported about 5.30am near Kulija Road.
— Main Roads WA (@Perth_Traffic) February 27, 2018
Traffic is blocked in both lanes northbound and motorists are advised to avoid the area.