The empty haul truck had approached a stop sign at the railway crossing.
On the other side of the crossing, there was a loaded haul truck approaching.
The empty haul truck saw the loaded truck and reversed to give way to the loaded truck and allow more room for it to cross the railway line.
As the empty haul truck reversed, it hit a van that had stopped behind it.
The right rear wheel of the empty haul truck hit the front passenger's side of the van.
The NSW Resources Regulator said the driver of the van was uninjured.
"Mine operators should design sites to separate light and heavy vehicles where possible," it said.
"Operators should review the separation distances in place at the mine. Supervisors should conduct audits to validate that workers are correctly implementing the controls in the roads or other vehicle operating areas control plans."
The regulator said that when reversing, workers must use all available aids such as mirrors, cameras and proximity detection systems to confirm it was safe.
