N.J. Stat. § 39:3-67
Every motorcycle when operated upon a highway shall be equipped with at least one brake adequate to control the movement of and to stop such vehicle.
Every motor vehicle, except a motorcycle and except a motor-drawn vehicle, shall be equipped with brakes adequate to control the movement of and to stop and to hold such vehicle, including 2 separate means of applying the brakes. If these 2 separate means of applying the brakes are connected in any way, they shall be so constructed that failure of any one part of the operating mechanism shall not leave the vehicle without brakes adequate to stop and to hold such vehicle. One of these means of applying the brakes shall be so constructed that it can be set to hold the vehicle, or any combination of which it forms a part, stationary on any up or down grade upon which it is operated, whether the vehicle or combination is empty or loaded.
Every combination of motor vehicles shall be equipped with brakes upon one or more of such motor vehicles, adequate to stop and to hold such combination of motor vehicles. Every motor vehicle, except a motor cycle, manufactured on or after July 1, 1938 when used on a highway shall be equipped with brakes on all wheels, except the front wheels of a 3-axle truck tractor and except any trailer or semitrailer of a gross weight not exceeding 3,000 pounds; provided, however, that the gross weight of any such trailer without brakes shall not exceed 40% of the gross weight of the towing vehicle, and that the gross weight of any such semitrailer without brakes shall not exceed 40% of the gross weight of the towing vehicle when the vehicles are connected. All brakes on a combination of vehicles shall be controlled by the driver thereof.
Every trailer and semitrailer, required to be equipped with brakes, shall be equipped with brakes of such a character as to be automatically applied upon break-away from the towing vehicle, and means shall be provided to stop and hold such vehicle for an adequate period of time.
In any combination of motor vehicles, means shall be provided for applying the trailer or semitrailer brakes, of any trailer or semitrailer equipped with brakes, in approximate synchronism with the brakes on the towing vehicle and developing the required braking effort on the wheels of the rearmost vehicle at the fastest rate; or means shall be provided for applying braking effort first on the rearmost vehicle equipped with brakes; or both of the above means capable of being used alternatively may be employed.
No person shall drive, move, park or be in custody of on any highway any motor vehicle not equipped as herein required.
N.J.S. § 39:3-67