Why is Cycling More Dangerous in the States?

The OECD finds that bicyclists in the U.S. incur a higher rate of fatalities and injuries in the U.S. compared to counterparts that are working to promote bicycling. Some of the other reasons that keep Americans from biking will shock you, as Matt Phillips writes: 

• Just 54% of bicyclist fatalities were considered by investigating officers to have a contributory factor on the part of motorists involved
• "The majority of fatal bike crashes occur in dry or clear conditions (94% in the US and 87% in the UK)"
• And, possibly saddest of all: “Data from the United States indicate that cyclists were imputed with an improper action in 68% of fatal bicycle crashes (though, as noted earlier, this may be biased as the cyclist was not able to give their version of events)."