New York State VTL:
S 381. Motorcycle equipment:
6. It shall be unlawful for any person to operate or ride upon a
motorcycle unless he wears a protective helmet of a type which meets the
requirements set forth in section 571.218 of the federal motor vehicle
safety standards as may from time to time be amended. The commissioner
is hereby authorized and directed to adopt regulations for helmets which
are consistent with the requirements as specified in section 571.218 of
the federal motor vehicle safety standards as may from time to time be
amended. The police authorities of a city, town or village may issue a
permit exempting members of organizations sponsoring or conducting
parades or other public exhibitions from the provisions of this subdivi-
sion while such members are participating in such parades or other
New Jersey Title 39:
39:3-76.7. Protective helmets
6. a. No person shall operate or ride upon a motorcycle unless he wears a securely fitted protective helmet of a size proper for that person and of a type approved by the director. Such a helmet must be equipped with either a neck or chin strap and be reflectorized on both sides thereof. The director is authorized and empowered to adopt rules and regulations covering the types of helmets and the specifications therefor and to establish and maintain a list of approved helmets which meet the specifications as established hereunder. For the purposes of this section, motorcycle shall not include any three-wheeled motor vehicle equipped with a single cab with glazing enclosing the occupant, seats similar to those of a passenger vehicle or truck, seat belts and automotive steering.
b. The director shall not assess motor vehicle points for the failure of a motorcycle operator or rider to wear a protective helmet.
Hopes this helps....
... I often see motorcyclists traveling on I-84 between PA and NYS stopping on the PA side to put on their helmets