Melbourne teen in fake emergency vehicle attended '30 or 40' crashes, faces 120 charges

Footage of an Australian teenager speeding through the streets of Melbourne in a modified ambulance has been played as evidence in court.

The 17-year-old boy is facing charges for allegedly modifying a truck to resemble an emergency vehicle and driving recklessly through suburbs to attend crashes.

Footage of the teen weaving in and out of traffic in the truck, with blue and red lights flashing, was posted on a Facebook page in 2017, alerting police to the deception.

The footage was shown in the children's court as evidence on Tuesday.

He previously admitted in court he attended road accidents in his modified truck, but said he did it with good intentions, reports 7 News.

"I just pretty much bought the truck, had it fitted out with blue and red lights and responded to emergencies that I got through the emergency management Victoria app," he told 7 News.

"Across the month, it was probably about 30 or 40 [incidents]" 

Police said on some occasions he would get out of the truck and help those involved in the accidents.

Emergency services are less than impressed with his efforts.

"He doesn't have any qualifications that would allow him to breach the road rules so it's a bit of a recipe for disaster," said Senior Constable Fritz Ebert on Tuesday.

The teen, only on his learner's license, is facing 120 charges including reckless conduct endangering serious injury, reports 7 News.

His lawyer says he will plead guilty to 31 offences and the lesser charge of dangerous driving.

His truck, which police say is valued at around $100,000 with all its modifications, has been confiscated.

His trial is on-going.