FourWheels

Newbie guy here. I'm out of work and a friend of mine who used to drive suggested I try driving. So now I'm surfing around to learn what I can about it. Someone commented earlier in this thread about safety (watching someone's back). This makes sense of course. But how often do safety issues actually arise? I've been told "never" but maybe that was only for my friend. So I thought I'd ask here.