The Queensland man charged with driving a truck so dangerously it crushed a young couple to death and injured 10 others near Dubbo is still yet to enter pleas to a string of offences he is accused of committing.
Despite being excused from appearing in court, Robert Crockford, 51, was expected to enter pleas at an arraignment hearing in the District Court in Dubbo on Friday.
However, the case was adjourned again at the Crown's request because a road safety expert "swamped with other demands" has not had time to prepare a critical report that forms a core part of the case against Mr Crockford.
The report, originally expected to be completed in January, is now expected to be finalised in June.
A document outlining the Crown's case, prepared for a committal hearing Mr Crockford waived his right to in December 2018, alleged Mr Crockford failed to slow down and caused a fatal pile-up at roadworks on the Newell Highway in January 2018.
In the document the Crown accused Mr Crockford of driving at 84km/h when he passed an 80km/h sign, 89km/h when he passed another 80km/h sign and 86km/h when he passed a 60km/sign.
In the subsequent collision Gulargambone's Hannah Ferguson, 19, and her 21-year-old partner Reagen Skinner, died instantly.
Ten other people, including a child, in cars ahead of the deceased couple were treated for a range of injuries including severe burns, a cervical a and spinal fracture and dislocated shoulder.
The Crockford case returns to court on July 26.