Tougher Vic drink-driving laws take effect

New, tougher drink-driving laws have come into effect in Victoria, meaning anyone caught over 0.05 will lose their licence for at least three months.

From Monday, any driver who blows a blood-alcohol reading of between 0.05 and 0.07 will lose their licence - even first-time offenders.

They will also be forced to have an interlock device fitted to their car for six months after getting back on the road, and to complete a behavioural program.

First-time drug drivers will now lose their licence for six months, up from three, while repeat offenders will be forced off the road for a year.

Spruiking the new laws, the state's Transport Accident Commission says driving skills begin to be impaired at a blood-alcohol level of 0.02.

The tougher measures also cover drivers who come from interstate.