In this chapter, the following terms have the meanings indicated. Terms Defined. “Administration” means the Motor Vehicle Administration. “Face shield” means a transparent device worn in front of the eyes and covering a portion or all of the face, the primary function of which is to protect the eyes and face. “Goggles” means a device with contour-shaped eyecups contacting the face and made with glass or plastic lenses, which is worn for the protection of the eyes and eye sockets. “Protective helmet or headgear” means a device primarily intended to protect the upper part of the wearer's head against a blow or impact. “Spectacles” means two lenses and a frame front which supports the lenses around their entire periphery, of suitable size and shape, connected by a nose bridge, and retained on the face by temples or other suitable means.