A MAN has died after he was hit by a truck on the Kwinana Freeway in Atwell this morning.

Police understand the man was struck after he exited a parked car.

The man was taken to Fiona Stanley by St John Ambulance in a serious condition.

Police advised this afternoon that he died.

Kwinana Freeway southbound from Armadale Road to Gibbs Road in Atwell was closed, with motorists advised to avoid the area.

Authorities re-opened the freeway just before 2pm.