Lesley Evans Ogden visited seven cities where cycling is a common mode of transportation and concluded:
Safety improves in a city as the total number of cyclists increases. This effect has been seen in studies in Denmark, the Netherlands, 14 other European countries, Australia, and 68 cities in California. “It is likely that causation runs in both directions: safer cycling encourages more cycling, and more cycling encourages greater safety,” writes John Pucher, professor of Urban Planning at Rutgers University, in his 2012 book City Cycling, written with Ralph Buehler. Motorist behavior probably contributes to this phenomenon. In places like Copenhagen—where four out of five individuals have access to a bicycle—most drivers are also cyclists, and so are accustomed to sharing public space with bicycles.
The Dish 