Matt Livingston was questioned by police for five hours before being released following the incident at Melbourne’s Calder Fwy which left a two-year-old girl dead.

The company he works for, Hendy Transport, will also be investigated, with police starting to search the driver’s work files.

His daughter Courtney Livingston said the 42-year-old veteran truck driver drank only occasionally and had never touched drugs in his life.

“I would be surprised if he could survive his own sanity after this – it’s an absolute tragedy,” Ms Livingston told Nine News.

“A car swerved in front of him, as the dashcam footage shows. It is much more difficult for a fully loaded truck to break than a normal car.

Police are also investigating whether drugs, alcohol or fatigue could have been a factor.

Detectives from the Major Collision Investigation Unit are examining the fatal crash at Diggers Rest on Monday, when a semitrailer carrying grain rolled over several cars near the Bulla Rd overpass.

Faced with dashcam footage that surfaced overnight, a car swerved into another lane seconds before the truck struck several cars, resulting in devastating wreckage by the side of the road.

A two-year-old Caulfield South girl, who was in the back seat of a car carrying a young family of four, died at the scene.

The 37-year-old mother remains in intensive care in serious but stable condition, while her father is still in critical condition.

Her one-year-old brother and a 62-year-old man in a separate car were both released from the hospital.

Meanwhile, Melbourne road users have been warned of a worrying trend after the lockdown: Motorists and motorists appear to ignore each other on the road.

Victorian Transport Association chief executive Peter Anderson said the change could be attributed to countless motorists returning to the road after heavy travel restrictions.

“What I have noticed lately, coming back from Covid, is the lack of awareness of other vehicles on the roads by other drivers, whether they are truck drivers or other drivers. “he told 3AW.

“Being aware of other road users is the most important thing.

“One of the common problems with heavy vehicles is the space in front of the vehicle when traffic slows down, and the driver goes into panic mode while trying to stop his truck.”

Traffic through the city is increasing, with data from the Department of Transportation showing an increase in the number of vehicles at major intersections.

There was 96% of pre-Covid traffic on the road on November 30.