A study of 167 European cities suggests that up to 10,000 premature deaths could be avoided annually if cities provided sufficient infrastructure and 1 in every 4 citizens used bicycling as their primary mode of transportation. Premature deaths would be prevented through improved air quality, public health benefits, and collision reduction.
Natalie Mueller et al., on behalf of the PASTA consortium. Health impact assessment of cycling network expansions in European cities. Preventive Medicine 10.1016 (2018). https://doi.org/10.1016/j.ypmed.2017.12.011