orcishgamer: I used to think this, but after looking into the studies it seems aggressive drivers cause less accidents (they are focused and less distracted).
I'd question that personally. Without seeing the studies it's hard to say, there's aggressive and there's aggressive. Some forms of aggressive driving probably aren't dangerous. However, one of the pitfalls of studies of that nature is how they determine who is and is not an aggressive driver.
Not to mention the cases where an aggressive driver causes an accident that he or she isn't directly involved in. Such as causing a driver to slam on the brakes and get hit by the idiot that's riding his bumper.
There is also the issue of what constitutes causing an accident is driving slowly enough that people take risks to get around a driver counted as causing an accident? Because that's sort of questionable, that should be counted against aggressive drivers and not slow drivers.
But, overall it wouldn't surprise me if it were technically true, I'd just caution people from reading too much into it as the kinds of crashes that aggressive drivers tend to have are more dangerous.