Last month's crash on Bulli Pass involving a runaway truck is far from the first time an incident like that happened.
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Negotiating the pass has been a problem for at least 60 years.
In August 1959, four people were injured - one of them a 13-month-old girl - when a truck driver lost control and careened down the pass.
The truck - carrying eight tonnes of bricks - crashed into a ute, pushing it against the rock wall of the pass before smashing through a safety fence and into bushland.
The 13-month-old girl, Pamela, was flung from the ute in the crash but miraculously suffered only facial cuts.
Ute driver John Harries suffered head injuries and a fractured pelvis. His wife Norma also suffered head injuries.
Witnesses said the family was flung from the vehicle when the truck crashed into it from behind.
"It was mangled like a concertina and flung across the roadway and against the wall of the pass," a witness told the Mercury.
Truck driver Graham Campbell said he had planned to drive into the wall to slow down but changed his mind when he saw a tanker carrying sulfuric acid coming up the pass.
Rather than risk a collision with the tanker, he aimed for the arrester bed at what was then called "devil's elbow".
But the truck was travelling too fast, overshot the ramp and tumbled through the bush.
Mr Campbell fractured both legs in the accident.
That wasn't the only accident on Bulli Pass in 1959 either.
In March that year Robert Lockie had a lucky escape after his car plunged almost 100 metres over the edge of the Bulli Pass lookout.
Had truck driver George McCartney not been having lunch on the roadside at the time, it's possible no one would have seen Lockie go over the edge "clutching the steering wheel" and raised the alarm.
Lockie was thrown from his car, suffering head injuries and broken limbs.
Just a month later, four young men came to grief at the devil's elbow.
The driver failed to negotiate the hairpin bend and crashed through the fence and the car somersaulted down the hill.
It landed on an old truck which has crashed at the same spot several years earlier.
Somehow none of the four occupants - who were all locals, from Thirroul and Helensburgh - suffered any broken limbs.
Seventeen-year-old John Proud was the worst injured, suffering head injuries, multiple cuts and severe shock.