Called "graduated licencing" here.
There are two levels below a full license. It's not age-based, which means that older newcomers who apply for a license must go through the same thing (not a bad thing, IMHO). The rules have changed (tightened greatly), but mostly the G2 level is new. The older initial license was called a "learner's permit" and allowed the holder to drive, but only with a fully licensed driver.
Note: "maintain a *zero* blood alcohol level while driving" and limitations on the passengers and their ages, and the particular roads and times of day they are allowed to drive.
Best regards, Spehro Pefhany