From city to city, the “strength in numbers” theory holds sway. In New York, with bicycling up 262 percent since 2000, injury risk has declined by 72 percent.35 In Portland, a fourfold increase in cycling has brought with it a 69 percent reduction in the crash rate.36 Davis, California, “America’s Bicycle Capital”—where one trip out of seven is by bike—has the lowest bicycle fatality rates of sixteen similarly sized California cities.●
