Brave firefighters fought through flames to try and save a truck driver thought to be trapped inside his burning vehicle.
Emergency services were called to the M7 near Glendenning where two trucks had collided about 6pm on Friday night.
Reports suggested one of the drivers was stuck inside a tanker that had become engulfed in flames following the crash.
Fire and Rescue NSW said the burning truck contained about 1500 litres of fuel, with flames hitting 1000 degrees celcius.
Police closed the M7 as loud noises came from the hull of the truck.
Despite fears of a major explosion, crews from fire stations battled the blaze and extinguished a grass fire that broke out nearby.
It was later confirmed the drivers had escaped before the fire broke out. Inspections of the charred remains of the truck confirmed it was carrying sand.
“Firefighters carried out an extremely desperate and determined operation to bring this fierce fire under control,” Incident Controller Inspector Kernin Lambert said.
“After approximately one hour of intense firefighting, firefighters were able to bring the truck fire under, extinguish the grass fire, control the diesel spill and prevent fire from spreading to the nearby factories.”
Paramedics treated the drivers at the scene.