Who Causes Bicyclists' Deaths?

So who tends to be at fault for causing fatal bicycle accidents? I would be willing to bet that most people would say that most such incidents are caused by lawless, arrogant (I've even heard "militant") bicyclists who ride too aggressively and obey the rules of the road infrequently. Well, not so much as it turns out. The New York Times' Freakonomics blog reported last month that "an analysis of police reports on 2,752 bike-car accidents in Toronto found that clumsy or inattentive driving by motorists was the cause of 90 percent of these crashes." Read the post and check out more statistics from the study here.