ROAD rage has spiralled out of control on a major freeway in Melbourne’s southeast.

A group of six people came to blows on the Frankston-Dandenong Rd about 11am on Sunday after an alleged tailgating incident in Seaford.

Witness Matthew Dylan told 7 News a white car had been tailgating another car before both vehicles pulled over to the left-hand lane.

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media_camera A woman gets out of her car to help her friend. Picture: 7 News

media_camera Road rage turned into an ugly brawl in Melbourne's southeast. Picture: 7 News

A group of men pinned down the man from the other car before two men threw punches.

A woman can be heard screaming in the vision as her male passenger is attacked before trying to break up the fight.

But another man attacks from the side, stomping and kicking the man on the ground.

The duo are pulled apart and the fight stops.

media_camera The brawl slowed down traffic on the road. Picture: 7 News

Mr Dylan, who filmed the fight, said it was an “unbelievable” attack.

“They all just jumped out and started to brawl,” he said.

“You can kill someone doing that.”

Victoria Police said the incident was not reported.