[jessriedel]

"Number of crashes" is not as important as "crashes weighted by severity". "Distracted driver" is the number 1 root cause of accidents, and "failure to stay in lane" is the number 1 proximate cause of fatal accidents in most states.

http://www.businessinsider.com/the-cause-of-the-most-fatal-c...

[guelo]

OK but the cited 40% figure is just for crash rates, not for severity weighted crash rates.