N.J. Stat. Ann. § 39:4-10

Every bicycle when in use at nighttime shall be equipped with a lamp on the front which shall emit a white light visible from a distance of at least five hundred feet to the front, and with a lamp on the rear which shall emit a red light visible from a distance of at least five hundred feet to the rear. In addition to the red lamp, a red reflector may be mounted on the rear, of a type approved by the division which shall be visible from all distances from fifty feet to three hundred feet to the rear when directly in front of lawful upper beams of head lamps on a motor vehicle.