High-range drink-drivers, who have a blood-alcohol concentration of .15 or more, and those who have committed two offences within five years will be forced to install the 12-month interlock system in addition to a court-ordered period of disqualification.

Minister for Roads and Freight Duncan Gay said the system was being introduced to help protect motorists' lives.

"This program is about protecting innocent people who unfairly have their lives shattered by a drunken idiot," Mr Gay said.

"I will not stand for drink drivers who gamble with other people's lives due to their stupid and irresponsible actions."

Wagga's Traffic Offenders Intervention Program facilitator Jon Morgan last week applauded the roll-out.

He estimated 10 per cent of his course participants were high-range offenders, while just 3 per cent were reoffenders.

"I think (the interlock system) is a good idea," Mr Morgan said.

"If you get your licence back it's a privilege not a right."

Mr Gay said the program could see up to 6000 new drink-driving offenders enter the program each year.

"The devices are fitted to a car's ignition and require drivers to pass a breath test before the engine will turn on," he said.

"If the device detects alcohol, the vehicle simply won't start."

Offenders who are enrolled in the program will be required to drive with a zero blood-alcohol concentration at all times.

One man was charged with low-range drink-driving on Saturday with an alleged prescribed concentration alcohol reading of .63.