"Today we stand alongside NSW Police, NRMA and our road safety experts to launch the next step in our fight against drug driving," Deputy Premier and Dubbo MP Troy Grant said.

"From today you'll start to hear a lot more about Mobile Drug Testing - what we call, MDT.

"If you're pulled over by police, it could be for a random breath test for alcohol, a mobile drug test, or both - so don't be surprised when it happens to you."

So far this year, one in 10 MDTs had come back positive, he said, compared with about 1-in-300 positive random breath tests for alcohol.

The NSW Government announced it was tripling mobile drug testing to 97,000 tests each year by 2017 to help combat those statistics.

Roads Minister Duncan Gay said he wanted every single one of those unsafe drivers off the roads.

"We're throwing millions at enforcement, dedicated drug testing vehicles and education campaigns from our Community Road Safety Fund to eradicate and anti-socialise drug driving," Mr Gay said.

"If taking drugs isn't stupid enough - driving while you're doped up is even stupider."

Assistant Commissioner John Hartley, Commander of Traffic and Highway Patrol said the simple message was if you used drugs and drove, the mobile drug testing program would identify you and put your licence, livelihood and family at great risk.

"Personal responsibility is the key to road safety, and those drivers that don't display such a quality will be prosecuted," he said.

"With our random breath testing detection rate at 1:305, and our drug testing rate at 1:10 in NSW, road users need to get the message; it is just not worth the risk."

Peak motoring body the NRMA welcomed the campaign after it called for a such an initiative last year, citing figures showing 428 motorists were charged with drug driving offences on roads across western NSW from 2010 to 2013.

In September the NRMA hosted a summit with stakeholders including NSW Police to discuss ways to reduce the numbers of drivers being caught.

NRMA Director for Western NSW Fiona Simson said the campaign could not have come soon enough.

"Sixteen per cent of fatalities on our state's roads last year resulted from crashes where a driver or rider had an illicit drug in their system," she said.

"What's especially worrying for our region is that 43 per cent of those fatalities were on country roads.

"This is a great initiative by the NSW Government and a big win for our members.

"It was the NRMA that launched the first drink driving campaign back in the 1980s. Today, drink driving is widely unacceptable in the community. We need to make sure this campaign garners the same results."

Ms Simson said 2015 research showed 44 per cent of drivers using drugs thought their driving skills would not be affected, and drivers aged under 30 accounted for more than 40 per cent of drink and drug driving offences.