Pedestrians and bicyclists
Roadway improvements have been shown to reduce crashes.
Bicycle helmet use
No state law requires adult bicyclists to wear helmets. Young riders are required to wear helmets in only 21 states and the District of Columbia. The map below shows at what ages these requirements apply. Many cities have local ordinances that require bicycle helmets for some or all riders.
State laws shown below — local laws also may apply.
Hover over map for more detail.