The man - who cannot be named for legal reasons - did not appear in Tamworth Local Court on Wednesday, but his solicitor told the court he was waiting on evidence to be served.

Police prosecutor Sergeant Rob Baillie said the crash investigation unit responsible for getting the evidence together in relation to the deadly crash was finalising the brief.

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"We accept the fact nothing has been served yet," Sergeant Baillie told the court.

He said he had "given instructions" to the police in charge to "start serving things" that afternoon.

Magistrate Julie Soars adjourned the case for one week, and said she expected an update on the progress.

"I am hoping things will be served by that date, so at least things can get moving," Sergeant Baillie said.

It's the police case that the man was behind the wheel of a four-wheel-drive towing a caravan when it collided with an oncoming sedan on Thunderbolts Way, near Nowendoc, on September 26 last year.

Police claim the man was driving home from holidays with his family when he allegedly crossed to the wrong side of the road and caused the crash, about an hour outside Tamworth.

A four-year-old girl, who was a backseat passenger in the four-wheel-drive, suffered critical injuries and died, and the driver of the sedan was also killed.

Ms Soars said she was told in December that the crash investigation unit needed more time to look into what happened.

"It's been over a month, but that's been impacted of course by Christmas and New Year," Ms Soars said.

The Tamworth man, who is in his 40s, faces nine charges including two counts of dangerous driving occasioning death.

He was not required to enter pleas to the allegations, which also include negligent driving causing both death and grievous bodily harm; four counts of causing bodily harm by misconduct while in charge of a vehicle; and not keep left of a dividing line.

Both the sergeant and the defence solicitor acknowledged the case was distressing and the families needed finalisation.

The man had been on bail since he was first charged in the days following the crash, and Ms Soars said his bail was to continue.