"I just heard a smack," the woman said.
"As I turned around I just saw a truck flip.
"I just saw stuff flying all over the road."
The woman said four people appeared to be involved in the crash, with two in a utility truck similar to a Toyota Hilux and one each in a silver utility and a small hatchback vehicle.
"By the time I got there the lady [in the hatchback] was getting out of her car.
"I raced to the truck that had flipped and he looked like he had hit his face ... he was climbing out."
She said the woman was getting stretchered by ambulance officers but luckily no one had been killed in the crash.
This was the first time she had seen a crash outside her home in 23 years of living there and had used the incident to highlight the importance of wearing seatbelts to her grandchildren.
Police were still at the scene.