Anyway it's hard to say for me. From experience from driving to school everyday, I see a lot of kid drivers that tailgate and weave between lanes a lot (I hate that!) like they own the road. But then again, there are a lot of good teenage drivers who are courteous and follow the rules of the road.
Teenagers. Especially those spoiled brats who never follow the rules because they can afford the fine for their violations. Surprised you didn't put "Asians" or "Women" for fun though, as they're usually the victims of trolling here on the Internet. Seriously, pro women drivers leave a great impression on me.
Teenagers as a group aren't bad drivers. There are just as many bad adult drivers as there are teenagers; you either follow the rules and be curteous on the road or you don't. That doesn't change.
Seniors, however, have worse memories and are often losing their eyesight/hearing, which absolutely makes them dangerous drivers. Not to mention they irritate other drivers by going way under the speed limit and often slam on the brakes (rather than slowing down normally).
Driving with my grandpa is one of the most terrifying experiences of my life.
Well I'm 16 and like a danger to the roads. My ass is bookin' it to school in the morning to ensure my promptness, so if that means I cut in front of a few cars and almost run over a few joggers, it is what it is.
I think I'll just stop driving when I'm 65. My dad will be 70 soon. He wasn't always a bad driver, but he definitely done some crazy stuff the past few times I've been in a car with him. My mom's even worse, though, and she's considerably younger.
I'm gonna go with teenagers because we can at least help it. Some elderly just don't know when to put the car keys away. My generation just doesn't give a ****.