Perth traffic: Rollover, multiple crashes and breakdowns give motorists headaches through the morning

A rollover, then multiple crashes and a series of breakdowns have frustrated motorists throughout Tuesday morning.

A crash on Kwinana Freeway northbound at Thomas Road in Bertram is still slowing traffic but it easing with the wreckage cleared.

Another crash on Marmion Avenue southbound at Marri Road in Duncraig has also been cleared after initially closing a lane.

However, traffic remains slow on approach and drivers should proceed with caution.

The debris left by the rollover on Canning Highway near South Terrace in Como has been cleared.

Westbound lanes had been closed as crews worked to secure the area but traffic is now flowing freely.

A crash at Guildford Road Eastbound at North Road in Bassendean has also been cleared after a lane was closed.

A series of breakdowns have also been dealt with, including Kwinana Freeway northbound at Mill Point Road in South Perth that had blocked the left lane.

Breakdowns on Mitchell Freeway southbound at Burns Beach Road in Joondalup, on Roe Highway westbound at Great Northern Highway in Middle Swan and at the Mitchell Freeway southbound exit to Birdiya Drive in the CBD have all been cleared.

In most instances, traffic is flowing freely.