A transport safety investigation has been launched into a collision between a truck and a passenger train in South Geelong, Victoria, on the morning of 3 April.

The investigation will be undertaken by the office of the Chief Investigator, Transport Safety, which conducts rail safety investigations in Victoria on behalf of the ATSB under the Commonwealth Transport Safety Investigation Act 2003.

Investigators have deployed to the site to examine the railway infrastructure, truck, and rollingstock in-situ, documenting evidence and removing any relevant components for further examination.

Likely further investigation activities will include interviewing the train driver, operations staff and any witnesses, reviewing operator procedures, analysing any recorded information, and examining relevant components.

The scope of the investigation and its timeframe will be determined as the Chief Investigator builds its understanding of the nature of the event.

Should any critical safety issues be identified at any stage during the course of the investigation, the ATSB will immediately notify relevant parties so appropriate safety action can be taken.