So, clicking http://cironline.org/reports/how-we-analyzed-pedestrian-fatalities-4421 http://cironline.org/reports/how-we-analyzed-pedestrian-fata..., it doesn't

So, clicking http://cironline.org/reports/how-we-analyzed-pedestrian-fatalities-4421 http://cironline.org/reports/how-we-analyzed-pedestrian-fata..., it doesn't explain how they assigned "fault", or which part of the data that came from. This seems like an important thing to explain :)