definiens: means a Light Valve used or intended for use as a window ( i ncluding sunroofs, vehicle roofs, roof panels, windshields, and side and rear window panes which are an integral part of the internal or external structure of such vehicle ) whether the win dow is supplied as original equipment or a replacement win dow pane, integrally incorporated in a transportation vehicle of a type not primarily designed or primarily intended for milita ry use . The term shall not include a Light Valve used or intended fo r use as a sunvisor, but may include Light Valves which are us ed or intended for use in a non - military transportation v ehicle as, or as part of, or are laminated to, or the surface area o f which is primarily attached to, a window, sunroof or windshi eld . The term shall mean passenger cars, recreational vehicles, trucks, buses, mobile cranes, trains, boats, agricultural, construction and mining equipment, but shall not include other types of vehicles such as aircraft, s pace craft and space - stations