Can cities and counties modify speed limits according to traffic regulations?

Cities and counties indeed possess the authority to modify speed limits based on traffic regulations. This power stems from local governance structures that allow municipalities to enact laws tailored to their specific traffic conditions and safety requirements. Local governments often evaluate factors such as traffic flow, accident history, and community needs before making adjustments to speed limits.

The ability to change speed limits enables cities and counties to respond dynamically to local traffic patterns and improve road safety for all users. This local authority is typically supported by state laws that grant municipalities discretion in setting certain traffic regulations, as long as they govern within the framework established by state law. Hence, it is accurate to assert that local jurisdictions can modify speed limits based on their assessments of road safety and traffic conditions.