Dashcam footage shows the heart-stopping moment a Sydney driver overtook on a Bali road before allegedly killing an oncoming scooter driver.
In the video, obtained by 9News, a van with Susan O'Brien behind the wheel can be seen crossing onto the wrong side of the road from behind a truck and ute.
One scooter driver has time to swerve but another right behind him - his friend - doesn't, hit head on and killed instantly. © 9NewsFriend Putu Elma Putrayana has been assisting Ms O'Brien in dealing with police.
The moment of impact can't be seen in the video, but a screeching of brakes and a loud bang can be heard.
Friends say Ms O'Brien has been left a distraught mess over the crash on a western Bali road - which could see her locked up for six years, accused of negligent driving causing death.
© 9NewsDashcam footage shows O'Brien swerving around a truck.
"She tried to flash the light and push the bell (horn) to give the signs for the motorbike," said friend Putu Elma Putrayana, who has been assisting Ms O'Brien in dealing with police.
But not even a full-face helmet could help 18-year-old student Rizki Akbar Putra, who died from catastrophic head injuries. © 9NewsStudent Rizki Akbar Putra, 18, died from catastrophic head injuries.
Contrary to earlier reports, investigators say 48-year-old Ms O'Brien does hold both an international and Australian drivers' licence.
She's known as a kind and generous woman in her Bali community where she rescues street dogs and volunteers her time to teach English lessons. © 9NewsThe bike at the crime scene.
"Yesterday children come here to support Susan with other teachers also," Mr Putrayana said.
Now moved from a west Bali police station into prison, Ms O'Brien is hoping to reach a peace agreement with the victim's family, that if convicted, could mean a reduced sentence.
For now though, the family is said to be distraught.