Police are investigating whether a driver turned to talk to her young children in the back seat seconds before she lost control of her utility, resulting in a fatal crash.
The utility collided with a Honda Civic near Toodyay. A 52-year-old Bedfordale woman passenger in the Honda was killed. Her 53-year-old husband, the driver, was flown to Royal Perth Hospital with head injuries.
He was in a critical but stable condition yesterday.
Police said the 43-year-old mother and her children, aged two and four, were not seriously injured in the crash on Toodyay Road about 6.30pm on Sunday. Major crash officers were investigating whether a momentary lapse of concentration caused the mother to swerve and lose control.
It was the third fatal crash in 48 hours on WA roads.
Less than an hour earlier, a 28-year-old Gosnells man died when he lost control on a sandy road shoulder east of Cue and was thrown from his car when it rolled several times.
Police believe he was not wearing a seatbelt.
Yesterday, relatives of a 25-year-old who survived a horror two-vehicle smash in the Goldfields on Friday night offered their condolences to the families involved. They thanked emergency services for saving Curtis Watchorn who was a passenger in a Ford Falcon sedan that collided with a minibus while trying to overtake a truck on Great Eastern Highway, east of Southern Cross.
The impact killed the Ford's driver, Diego Codyre, and front-seat passenger Luke Adams as well as the driver of the minibus, NSW father of three Aidan Ashcroft.
Mr Watchorn and nine of Mr Ashcroft's relatives, including five children, were injured.