A blank classifies under 7014 as long as it has not been optically worked — meaning it has not been ground, polished, or otherwise processed to achieve a defined optical surface. Once any optical working is performed, the article moves to the headings covering worked optical elements, regardless of whether it is a finished lens or an intermediate stage.

Classification depends on the essential character of the complete article. A passive glass road stud or reflector without electrical components classifies under 7014. An active LED road stud where the electrical light-emitting function predominates would likely classify under the electrical or lighting headings. Mixed assemblies should be evaluated against the GRI rules and, if uncertain, resolved through a CBP binding ruling.