here is some more info that may be help full
http://www.cba-abatenc.org/Chap Resource Docs/HCDP-Flyer -DOC SKI.pdf
DOT FMVSS 218 is not a federal law, nor is it a construction standard. Compliance
cannot be determined by visually inspecting a helmet. FMVSS 218 is an engineering
performance standard. Manufacturers’ certify their helmets meet the standard, not the
DOT. Results of manufacturer certified helmet testing conducted by NHTSA between
1980 and 1994 reveal that 68% of the helmets tested failed.
According to the Supreme Court of the United States: “It is a basic principle of due
process that an enactment is void for vagueness if its prohibitions are not clearly
defined. Vague laws offend several important values. First, because we assume that
man is free to steer between lawful and unlawful conduct, we insist that laws give the
person of ordinary intelligence a reasonable opportunity to know what is prohibited, so
that he may act accordingly. Vague laws may trap the innocent by not providing fair
warning. Second, if arbitrary and discriminatory enforcement is to be prevented, laws
must provide explicit standards for those who apply them. A vague law impermissibly
delegates basic policy matters to policemen, judges, and juries for resolution on an ad
hoc and subjective basis, with the attendant dangers of arbitrary and discriminatory
application.†Grayned, v City of Rockford (1971)
Therefore, in order for a law to be constitutional, an average person of reasonable
intelligence must be able to answer the following question: “What is Federal Motor
Vehicle Safety Standard (FMVSS) 218, and how can I ensure that I comply with it?â€
Having reviewed FMVSS 218 criterion and procedures, we find that:
1. FMVSS 218 is not a consumer law;
2. FMVSS 218 is a manufacturing standard understood only by engineers and
the industry;
3. The average person of reasonable intelligence cannot possibly ensure
compliance, and;
4. Law enforcement officers are not capable of roadside testing of safety helmets
to ensure compliance.
CBA/ABATE of NC suggests mandating compliance with FMVSS 218 standards
requires citizens to comply with a law which is constitutionally vague, unenforceable, and
violates the principles of due process guaranteed all citizens by the Constitutions of the
United States and North Carolina.