A young woman has been killed in a horrific crash involving a truck and a car after witnesses reported the smaller vehicle driving erratically.
The tragedy unfolded on the Warrego Highway at Bowenville in Queensland's Toowoomba region at about 8.30am on Friday.
The woman, 29, who was a passenger in the maroon Holden Commodore, died when the vehicle slammed into the semi-trailer head-on.
Queensland Ambulance Services were on the scene of the accident (stock image)
The driver, a 35-year-old man, was airlifted to hospital where he is fighting for life with horrific injuries to his arms and legs.
The truck driver, also 35, is in a stable condition and was taken to the local Darby hospital for observation.
Brad David from Dalby police said the commodore had veered on to the wrong side of the road before impact.
'The road marking suggest it was on the wrong side of the road [for the commodore] and the truck driver has done his best to avoid it,' senior constable David said.
'But he has braked significantly prior to the impact.'
It is not known if alcohol or drugs played a role in the crash.
The Forensic Crash Unit is appealing for any witnesses to the crash, or anyone with dashcam footage of either vehicle before the crash, to contact police.