A 47-year-old man has been flown to hospital after the road train he was driving crashed into a power pole in Muchea.
Police say the truck came off Brand Highway early this morning and travelled for about 200 metres through dense scrub before running into a pole.
The rescue helicopter has flown the 47-year-old driver to Royal Perth Hospital.
The passenger was taken by ambulance to Swan Districts Hospital.
Police say both sustained only very minor injuries.