[nitrogen]

What are the absolute rates? Here was a quote I enjoyed from your link that borders on tautology:

My more than 30 years of traffic safety research leaves little doubt that the 2 factors that overwhelmingly determine an individual’s risk in traffic are (1) the individual’s behavior and (2) the behavior of other road users.

Why does the author need over 30 years of research to come to this conclusion?

[Prisen]

My anecdotal experience is that almost everyone is oblivious to the second factor. "Yeah I drive over the speed limit/tailgate/drive a motorcycle, but I'm a much better driver than the average idiot so it's not dangerous for me."