The driver who ploughed four police officers and killed them on the Eastern Freeway will testify against his manager who faces manslaughter charges over the horror crash.

Simiona Tuteru is facing 82 charges including four counts of manslaughter in relation to the crash which left Senior Constables Lynette Taylor, Kevin King and Constables Glen Humphris and Joshua Prestney.

The 49-year-old trucking manager appeared in the Melbourne Magistrates Court on Monday to fight the charges at a committal hearing.

Simiona Tuteru, the Connect Logistics manager has been charged with manslaughter over the Eastern Freeway crash that killed four police officers. Picture: NCA NewsWire / David Crosling
Simiona Tuteru, the Connect Logistics manager has been charged with manslaughter over the Eastern Freeway crash that killed four police officers. Picture: NCA NewsWire / David Crosling

The officers were killed after they stopped to pull over Richard Pusey, who was clocked speeding at 149km per hour in his black Porsche. He was urinating on the side of the road and avoided being hit.

Killer driver Mohinder Singh was jailed for 22 years in April after pleading guilty to four counts of culpable driving causing death.

The trucking manager's lawyer David Hallowes SC told the court prosecutors planned to rely on him as a witness in the case.

Killer driver Mohinder Singh is set to give evidence at the committal of his manager who has been charged with manslaughter. Picture: NCA NewsWire / David Crosling
Killer driver Mohinder Singh is set to give evidence at the committal of his manager who has been charged with manslaughter. Picture: NCA NewsWire / David Crosling

The driver's "credibility and reliability" would be an issue and Mr Hallowes wanted to cross-examine him in relation to his claims.

Singh's wife and two children are also expected to give evidence at the hearing on Monday but it's unclear when the driver will testify.

Prosecutors requested family members give their evidence via videolink so they didn't have to run the "media gauntlet" at the court but technical difficulties meant they would be forced to appear in person.

The hearing in front of Magistrate Luisa Bazzani will continue this afternoon.

Originally published as Killer truckie to testify against boss