A new Victorian State Government trial will force drivers to pass a breathalyser test before leaving licensed venues.

The 'alco-gates' will see breath tests linked to the boom gates at car parks via sensors, and were announced as part of the State Government’s Towards Zero 2016-2020 road strategy.

If drivers fail the breath test, the boom gate will prevent them from leaving and they will be made to wait until they are sober or take a taxi home.

The trial will begin at a small number of pubs and clubs initially, before being rolled out further if successful.

Those affected by the state’s road toll have supported the Transport Accident Commission’s move to introduce the trial.

Danielle Haggerty lost her brother, Scott, in 2008 after he spent the day drinking and crashed his car into a power pole after deciding to drive home.

“It means a lot if it prevents another family going through what I’ve gone through,” she said.

“I think there’s so much value in it if it prevents people driving home.

“Just think of the families and what we’ve been through.

“It’s nearly been ten years but we’re still suffering every day.”

Danielle Haggerty, who lost her brother to drink driving, has thrown her support behind the trial. (9NEWS)

The 'alco-gates' would be another measure for the state government's Towards Zero strategy. (File footage)

Director of Road Safety at VicRoads, Antonietta Cavallo, said the trial is one of many measures being considered to work toward a 20 percent reduction in the state’s road toll by 2020.

“We’re taking everything we know from around the world and bringing it here to see if it can save lives,” Ms Cavallo said.

“Alco-gates is a way we can look to resolve that problem.”

Ms Cavallo said the pilot wouldn’t be purely to “catch people,” but rather “help them make good choices before they decide to drive or even go out.”

The TAC’s Samantha Buckis said the technology is modelled on similar world-first practices paired with enforcement in Stockholm.

“It’s been a great deterrence model in Sweden,” Ms Buckis said.

“When people get off the port at the ferry they go through boom gates that they have to breathe into to check their blood alcohol concentration levels, and if they’re okay they go through.”

She said the logistics still had to be fine-tuned, and enforcement would come in the way of boomgates being manned.

“It’s likely to be manned, even if it’s not policed, with people who could assist with moving cars out of the way,” Ms Buckis said.

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The TAC is also considering other trials including a road side fatigue test, where alarms are set off inside the car if passengers fall asleep.

Alongside the 20 percent reduction in deaths, the government hopes to decrease serious injury by 15 percent by 2020. The current road toll stands at 116.