Crazy moment men punch up in the middle of a busy Adelaide road

Police will investigate after two men were captured on video punching each other in the middle of a busy roadway in South Australia.

Police will investigate whether a brutal brawl between men in the middle of a busy Adelaide road was sparked by road rage.

Video footage released by 7 News showstwo men getting out of their vehicles along Fullarton Rd in Dulwich then violently punching each other about 4pm on Tuesday

The wild brawl occurred in front of oncoming traffic, stopping one lane from moving. Picture: 7 News

The duo — one wearing a fluorescent green top and the other dressed in grey — can be seen in the video taking swings at one another.

Cars are forced to avoid the men with one vehicle seen in the footage swerving out of the way.

Other vehicles are forced to stop as the fight blocks one lane of oncoming traffic.

After about 30 seconds, the two men go back into their vehicles.

The video shows the two men are fighting while their cars are sitting near a busy intersection. Picture: 7 News

According to 7 News, the fight was sparked after one of the men, who was driving a dark-coloured Volkswagen, wove within the lines with their arm hanging out the window.

A silver car, which was driving along side the Volkswagen, was then forced to swerve into another lane to avoid it.

The Volkswagen then cut across three lanes of traffic and pulled up behind the silver car before the brawl occurred.

Police are investigating.