39:3-76.7. Protective helmet specifications.
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.

Other motorcycle laws:

39:3-76.3. Handle bar height limitation.
No person shall operate on a public highway a motorcycle on which the handle bar grips are higher than the shoulder height of the operator when seated.

39:3-76.3a. Motorcycles, conformance to federal standards, NHTSA certification.
No motorcycle shall be operated on the public highways or roadways of this State unless the motorcycle was manufactured in compliance with applicable Federal Motor Safety Standards that were in effect on the day the motorcycle was manufactured and the motorcycle has a certification label, in the format prescribed by the National Highway Traffic Safety Administration, attesting to that compliance, permanently affixed by the original manufacturer.

39:3-76.4. Muffler system design.
In addition to the muffler requirements contained in section 39:3-70 of the Revised Statutes, motorcycles shall be equipped with muffler systems designed especially for motorcycles and of a type approved by the director.

39:3-76.5. Seating of riders; required equipment.
a. A person operating a motorcycle shall ride only upon the permanent and regular seat attached thereto, and such operator shall not carry any other person nor shall any other person ride on a motorcycle unless such motorcycle is designed to carry more than one person, in which event a passenger may ride upon the permanent and regular seat if designed for two persons, or upon another seat firmly attached to the rear or side of the operator. A passenger shall ride astride on a motorcycle only if the feet of that passenger rest firmly upon the footrests attached to the motorcycle as required by subsection b. of this section. A passenger on a motorcycle, whether riding astride or in a sidecar attached to the motorcycle, shall wear a securely fitted helmet of a size proper for that passenger as required under section 6 of P.L. 1967, c. 237 (C. 39:3-76.7).

A motorcycle operator who carries a passenger in violation of this subsection shall be fined not less than $50.00 nor more than $100.00.

b. Motorcycles designed to carry more than one person shall be equipped with adequate footrests for each passenger. Seats and footrests shall be of a type approved by the director. Handholds shall be required only insofar as they are necessary to comply with federal regulations.

39:3-76.6. Authority to regulate.
The director is authorized to adopt rules and regulations covering the types and specifications of the equipment for motorcycles required by this act [R.S. Cum. Supp. 39:3-76.3 et seq.]

39:3-76.8. Specifications of goggles or face shield.
No person shall operate a motorcycle unless he wears goggles or a face shield of a type approved by the director. The director is authorized and empowered to adopt rules and regulations covering types of goggles and face shields and the specifications therefor and to establish and maintain a list of approved goggles and face shields 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.

39:3-76.9. Wind screen specifications.
The provisions of section [39:3-76.8] of this act with respect to goggles and face shields shall not apply to the operator of a motorcycle equipped with a wind screen meeting specifications established by the director.

39:3-76.10. Approval of protective equipment required prior to distribution for sale.
No person shall sell, offer for sale or distribute any protective helmets, goggles or face shields for use by the operators of motorcycles, or protective helmets for the use of passengers thereon, unless they are of a type and specifications approved by the director and appear on the list of approved devices maintained by the director.

39:3-77. Selling or using unapproved devices or equipment.
No person shall have for sale, sell or offer for sale for use upon or as a part of the equipment of a motor vehicle any unapproved device or equipment of a type which is required to be approved by the commissioner.

No person shall have for sale, sell, offer for sale or use any device, part or accessory which changes or is intended to change the design or designed performance of any device or equipment required to be approved.

No person shall have for sale, sell or offer for sale for use upon or as part of the equipment of any motor vehicle or motor-drawn vehicle any device or equipment of a type required to be approved unless such device or equipment bears thereon the trade-mark or name under which it is approved so as to be plainly visible when installed.