Proportion of all bicycle-related injuries that were classified as head injuries among cities with public bike share programs and control cities, centered on intervention date (indicated by vertical line): North America.
Note. PBSP = public bicycle share program. The PBSP cities were Montreal, QC; Washington, DC; Minneapolis, MN; Boston, MA; and Miami Beach, FL. The control cities were Vancouver, BC; New York, NY; Milwaukee, WI; Seattle, WA; and Los Angeles, CA. Proportions are unadjusted.