DRAMATIC CCTV footage has caught the moment a bus carrying 20 children almost collided into a semi-trailer on Sydney's M5 motorway.

CCTV footage shows the truck having to break so hard to avoid the coach it jackknifes while the other vehicle carries on seemingly oblivious to the accident that almost occurred.

The incident happened on Thursday morning on Sydney's M5 motorway at Hammondville in the city's south west.

The bus (top right) starts to pull into the lane directly in the path of a semi-trailer. Picture: NSW Police Force
The bus (top right) starts to pull into the lane directly in the path of a semi-trailer. Picture: NSW Police Force

On the footage, the bus - carrying approximately 20 schoolchildren - can be seen waiting to merge into the lane.

As a car passes, the coach pulls in but the driver seems unaware of an oncoming semi-trailer.

The truck and coach were inches from disaster on the M5 in Sydney. Picture: NSW Police Force
The truck and coach were inches from disaster on the M5 in Sydney. Picture: NSW Police Force

The truck driver is forced to take evasive action and brake heavily, jack knifing the lorry in order to avoid a collision. As plumes of smoke from the truck engulf the motorway, the school bus calmly drives away from the chaos it caused.

NSW Police are appealing for the truck driver and witnesses to come forward.

Smoke from the braking truck engulfs the motorway as the school coach calmly drives away. Picture: Facebook. Source:Supplied
Smoke from the braking truck engulfs the motorway as the school coach calmly drives away. Picture: Facebook. Source:Supplied

Following the incident, passing motorists flagged down the coach driver and alerted police.

Officers from Liverpool spoke with the bus driver, a 59-year-old man, and commenced investigations.

The truck driver has also since been identified by police.

News Corp Australia

New Parkinson’s specialist nurse joins Tweed-Byron network

Premium Content New Parkinson’s specialist nurse joins Tweed-Byron network

People living with Parkinson’s disease now have added support

Hospitality businesses urged to sign up to COVID program

Premium Content Hospitality businesses urged to sign up to COVID program

The free meal voucher program is expected to be rolled out soon

NRL game brings Titanic amount of cash flow to Lismore

Premium Content NRL game brings Titanic amount of cash flow to Lismore

NRL game between brings huge economic benefit to the town