A Melbourne truck driver has pleaded guilty to culpable driving causing the death of another man in a fatal freeway crash.

Michael Brian Templeton, 30, on Monday pleaded guilty to culpable driving causing the death of Kari-Pekka Maunus on the Calder Freeway at Taylors Lakes in March 2017.

Templeton's large tip truck swerved erratically on the city-bound section of the freeway and slammed into the back of Mr Maunus' ute, running over it and killing the 49-year-old boiler maker instantly.

It's alleged Templeton was affected by the drug 'ice' at the time of the crash.

A Melbourne truck driver has pleaded guilty to culpable driving causing the death of another man in a fatal freeway crash

Michael Brian Templeton, 30, on Monday pleaded guilty to culpable driving causing the death of Kari-Pekka Maunus on the Calder Freeway at Taylors Lakes in March 2017

The impact caused three more cars to collide, with one other driver taken to hospital with minor injuries.

He was due to face a committal hearing in the Melbourne Magistrates Court on Monday, and more than a dozen witnesses were expected to give evidence, including other drivers.

But at the start of the scheduled two-day hearing, Templeton pleaded guilty to culpable driving while four other charges were struck out.

The guilty plea resolved the hearing, avoiding a potential trial.

Templeton was remanded in custody and is due to face a pre-sentence hearing on May 24.