Peak-hour traffic has been hit across the metropolitan area by several incidents as heavy rain causes widespread delays.
Motorists northbound on Kwinana Freeway need to be extra careful on the approach to South Terrace in Como with the left lane blocked after an accident.
Main Roads have warned of slow traffic in the area.
There have also been a number of breakdowns across the metropolitan area, with the right lane blocked on Tonkin Highway northbound after Roe Highway in Kewdale.
Traffic is slow on approach, with visibility in the wet also hampered.
Traffic is also slow on Tonkin Highway southbound prior to Morley Drive in Morley after a breakdown.
Tow trucks are dealing with the issue in the left emergency lane.
There has been a truck breakdown on the Kwinana Freeway in South Perth.
Emergency services have closed the left lane prior to Mill Point Road.
And Main Roads have warned holidaymakers heading to Perth Airport to allow extra travel time with roadworks closing Tonkin Highway from Great Eastern Highway to Dunreath Drive for bridge removal and construction.
The works started at 4am on Monday, with motorists told to seek alternative routes.
Thick smoke is also making driving difficult on Mitchell Freeway between Neerabup Road and Hester Avenue.
With reduced visibility in the area, motorists have been told to switch on their headlights and take extreme caution.
The latest incidents come after a crash on Kwinana Freeway in Baldivis prior to Karnup Road caused delays on Sunday night.
With wet weather to continue throughout Monday and into Tuesday, motorists across Perth have been warned to stay vigilant, switch on headlights and ensure a safe braking distance to the vehicle in front.