Yeah, mopeds need a driver license on their own here in Austria and Europe. You can get it as a 15-year old, but need to pass a strict PC and practical driving test. The PC test was written until not long ago and IMO not as strict at all compared to what my nephew had to learn. I had like 100 questions to study 20 years ago and he had 400 traffic rules and situations to study for his online test.
BTW: what's the price in the US these days to get a car driving license ?
It's 2500$ or 2000€ here these days, no joke.
I probably will hand over some cash to my nephew and my two nieces if they are 18 so they can afford it ...