Perth motorists jetting home for the weekend are urged to drive safely as a peak hour crash has caused some traffic grief.

The crash occurred on Kwinana Freeway southbound at Berrigan Drive, Jandakot.

It has shutdown the left emergency lane on the freeway.

Traffic is slow on approach as Perth drivers look to dive in to their weekend.

Main Roads WA alerted about the crash on social media, warning drivers to proceed with caution.

More to come.