A vehicle breakdown on Kwinana Freeway has slowed traffic to a near-standstill as Perth motorists head home on Sunday evening.
The incident is located on the Freeway northbound on Mount Henry Bridge at Salter Point.
The vehicle has blocked the right emergency lane of the Freeway, causing congestion on approach to the site.
RAC are at the scene of the breakdown.
Main Roads has urged motorists to proceed with extreme caution if travelling in the area.
More to come.