15. A study found almost three-quarters of fatal crashes (74%) in NYC involved a head injury and nearly all bicyclists who died (97%) were not wearing a helmet. Helmets have been found to be 85% effective in preventing head injury.
16. From 1990 to 2005, only one fatal crash with a motor vehicle in NYC occurred when a bicyclist was in a marked bike lane.
17. Research has shown that tripling the number of bike riders on the street cuts motorist-bicyclist crashes in half.