49 CFR Part 571218 NHTSA is proposing to amend several aspects of Federal Motor Vehicle Safety Standard (FMVSS) No. 218, Motorcycle Helmets. Some of the amendments would help realize the full potential of compliant helmets by aiding state and local law enforcement officials in enforcing state helmet use laws, thereby increasing the percentage of motorcycle riders wearing helmets compliant with FMVSS No. 218. The amendments would do this by adopting additional requirements and revising existing requirements to reduce misleading labeling of novelty helmets that creates the impression that uncertified, noncompliant helmets have been properly certified as compliant.