Oh great, more smog. 
I wouldn't worry too much about the dangers of driving. 21 year old people are usually more mature about things, may that be in your own actions or judging the actions of others. So it should be somewhat less nerve-wracking this time around.
Ontario has a graduated licensing system. There is a 1 year permit, though I think you can have that reduced to 6 months if you take an accredited course. IIRC, you need someone to accompany you in the vehicle and cannot drive on certain classes of roads (highways and expressways come to mind). Even after you graudate from the permit, there are restrictions on your driving for yet another year or so (no expressways, and I think no highways). I'm guessing that there are even more restrictions if you are under 18.
I really don't know why I know this crap since I steadfastly refuse to get a drivers license.
I wouldn't worry too much about the dangers of driving. 21 year old people are usually more mature about things, may that be in your own actions or judging the actions of others. So it should be somewhat less nerve-wracking this time around.
Ontario has a graduated licensing system. There is a 1 year permit, though I think you can have that reduced to 6 months if you take an accredited course. IIRC, you need someone to accompany you in the vehicle and cannot drive on certain classes of roads (highways and expressways come to mind). Even after you graudate from the permit, there are restrictions on your driving for yet another year or so (no expressways, and I think no highways). I'm guessing that there are even more restrictions if you are under 18.
I really don't know why I know this crap since I steadfastly refuse to get a drivers license.