A man has received life-threatening injuries are being hit on the Kwinana Freeway in Baldivis.
Around 9pm on Thursday, a Renault Clio hatchback was travelling southbound along the freeway between Karnup Road and Paganoni Road, when it collided with a pedestrian.
The pedestrian, a man in his 20s, was critically injured and is now in Royal Perth Hospital.
The driver of the vehicle was uninjured and is assisting police with their inquiries.
Investigators would like to speak with anyone who may have dash-cam footage of Renault Clio driving in the area, or the pedestrian walking in the area, around the time of the crash.
Anyone with any information is asked to contact Crime Stoppers on 1800 333 000 or report online at Crimestopperswa.com.au.
Digital drivers' licences to be introduced in WA
Mandurah FIFO worker wins $250k
2026 ANZAC Day services across the Peel and Rockingham regions
Mother of 11-year-old boy killed in Mandurah scooter crash found safe and well
Peel charity desperately seeks funds to keep doors open
Australind train service set to resume
Thunder premiership player Traye Bennell hangs up the boots
Works underway to protect 200-year-old 'Big Tree' in Greenfields
Wanted man believed to be in Mandurah area