A motorcycle rider has become the 11th person to die on the nation's roads over the Anzac Day long weekend.
The man died at the scene after he lost control on a bend at Kinglake, in Victoria, and collided with a car coming in the opposite direction.
Traffic and Highway Patrol Command's Acting Assistant Commissioner, Stuart Smith, said that police were out on force over the long weekend but that it was ultimately up to those behind the wheel to drive safely and take regular breaks.
In Queensland, a driver was found deceased by police inside a burnt out car north of Brisbane.
Police were called to the crash scene at Kurwongbah early on Sunday morning and believe that the car caught alight after leaving Narangba Road just after 5 am.
On Saturday afternoon, a four-year-old girl died after the car she was travelling in hit a tree near Ballarat, Victoria.
The girl was the only passenger of the car’s male driver who was taken to hospital with minor injuries.
In New South Wales, seven people have died, including three young men -- aged 24, 21 and 17-years-old -- who were returning home from a pig hunting trip when their 4WD left the Mitchell Highway and struck a tree north of Trangie in the state’s central west.
The absence of skid marks on the road has led police to believe the driver may have fallen asleep.
“Fatigue is the most likely outcome here,” NSW Police Highway Patrol Inspector Phil Brooks told The Sydney Morning Herald.
The triple fatality came after a 17-year-old girl was killed in a crash in the Southern Highlands in the early hours of Friday morning.
The teenager, understood to be Chloe Soper, was behind the wheel of a car that left the Old Hume Highway at Mittagong and hit a tree.
Her 15-year-old male passenger sustained fractures and was airlifted to Liverpool Hospital where he is in a serious but stable condition.
Police say the speedometer on the car was stopped at 180km/h when it crashed and the engine block was found 30 metres away from the vehicle.
Hours before, a 44-year-old woman was struck by a car while she crossed the road in Cardiff, south-west of Newcastle.
She was taken to John Hunter Hospital in a critical condition but died.
In South Australia, a woman died after her car hit a pole at Edwardstown in south-west Adelaide just before 8pm on Friday night.
Police continue to urge drivers across the nation to slow down this long weekend.