An elderly man has been caught on dashcam, riding his mobility scooter for hundreds of metres in 100km/h traffic, on a Melbourne Freeway.

The vision, posted on Dashcam Owners Australia's Facebook page, shows the 92-year-old man unconcernedly travelling along the left lane of the Monash Freeway at Mulgrave before 3pm on Friday.

Bruce, the motorist whose dashcam captured the event, can be heard telling the man to pull over, as afternoon traffic wizzes past.

“Move over mate. You’re on the freeway. You’re not supposed to be on the freeway,” Bruce is heard shouting.

The elderly man, who was travelling at about 15/km/h, yells “get f***ed” in response.

The man was seen riding along as traffic wizzed past. Credit: Dashcam Owners Australia / Facebook

Bruce then calls the police, telling them he’s following the man with his hazard lights on.

““I’m just going behind him with my hazards on but the traffic's obviously pretty dangerous at the moment,” he tells a police dispatcher.

“I just told him to try and pull over and he just told me to f**k off.”

After merging out of traffic and into the service lane, the man is seen moving back into the left lane of traffic, with Bruce behind him.

“He’s just driving along quite happily."

“If I go off around him, he’s going to get collected.”

Police arrived shortly after Bruce's call. Credit: Dashcam Owners Australia / Facebok

A police car was seen pulling up beside the 92-year-old shortly after Bruce’s call.

The man was seen waving at police before slowly pulling over.

Police confirmed the elderly man had been reported missing by family members earlier.

“He was taken to Glen Waverley Police Station where he was reunited with his family,” police said in a statement.