New demands for drink driving laws

There are demands for a new law to punish people if they don't report drink drivers when they get behind the wheel.

NSW Premier Barry O’Farrell says it would be hard to enforce but one victim's family says it would be a deterrent that could save lives.

Melissa McKeown smashed head-on into Kerry McMahon at Tahmoor, two years ago, killing the mother of four.

Before she got into her car, friends begged her not to drive.

The victim’s mother Elissa McMahon says they didn’t go far enough: “If they had just called the police in front of her, she probably wouldn't have driven."

The McMahon family wants a new law to compel people to warn police and to make them legally accountable. They want it to be called "Kerry's Law".

They say it's like being an accessory.

"You're letting weapons out onto the road, aren't you?" says Elissa.

The victim's son Sam McMahon agrees: "There would be a lot less drink drivers if there was, say, their best friend saying they were going to get in trouble if they'd got behind the wheel drunk themselves, not just the driver."

Legal history was made in Perth last year, when a man was found guilty of drink-driving for merely giving the keys of his car to a drunk friend, who then smashed into and killed a young man.

Barry O’Farrell says it would be hard to enforce but it's worth considering.

He told 7News: "I'm happy for the Roads Minister and the Attorney-General to look at it but I'd like them to have police input."

The McMahons have already had one legal victory. A loophole, exposed by Seven's Sunday Night programme, has been closed.

It allowed Melissa McKeown to keep driving for two years until she was sentenced.

Now, police will confiscate licences as soon as they charge a dangerous driver.