15 U.S.C. § 6006: “Approved bicycle helmet” defined

In this chapter, the term “approved bicycle helmet” means a bicycle helmet that meets—(1) any interim standard described in section 6004(b) of this title, pending establishment of a final standard under section 6004(c) of this title; and (2) the final standard, once it is established under section 6004(c) of this title.