In the United States, there is no federal law requiring bicycle registration. However, bicycle registration laws and requirements can vary at the state, county, or city level. Some local jurisdictions may have implemented their own bicycle registration laws or voluntary registration programs.
These programs are typically intended to help recover stolen bicycles or assist in the identification of bicycle owners. They may involve registering the bike's serial number and owner's information with the local law enforcement agency or licensing department. Some programs may require the attachment of a registration sticker or plate to the bicycle.
It's important to note that the existence and specific details of bicycle registration laws can differ greatly between different states, counties, and cities. To determine if there is a bicycle registration requirement in your area, you should consult the local traffic laws or reach out to the appropriate local authorities, such as the police department or transportation department. They will be able to provide you with the most accurate and up-to-date information regarding bicycle registration laws in your specific jurisdiction.