Over here, you're not allowed to drive unless you have a full driver's licence. So when you turn 18, you've got to take driving lessons, pass a theory test, pass a driving test and then you can drive alone, on the highway, at night etc. etc.
However, after you've passed your driving test, you will be classified as a 'beginning driver' for a period of 5 years, which means that the legal drinking limit is lower, and you'll get points on your licence for exceeding the speed limit by at least 30km/h in town or 40km/h on the highway.