current helmet law:
Sec. 28.35.245 . Motorcycle helmet.
A motorcycle helmet may not be manufactured or sold in the state
unless the helmet conforms to standards established by regulation
by the commissioner of public safety. The regulations must provide
for helmets that allow normal peripheral vision and hearing
and minimize neck injuries to the wearer potentially caused
by the helmet. The regulations shall be adopted under the provisions
of AS 44.62 (Administrative Procedure Act).
A person who is 18 years of age or older may not be required
to wear a helmet while operating a motorcycle if the person
is the holder of a license or endorsement to operate a motorcycle.