state the two types of glass normally used on modern vehicles
The windshield (North America) or windscreen (EU and most Commonwealth countries) of an aircraft, car, bus, motorbike or tram is the front window. Modern windshields are generally made of laminated safety glass, a type of treated glass, which consists of two (typically) curved sheets of glass with a plastic layer laminated between them for safety, and are bonded into the window frame. Motorbike windshields are often made of high-impact polycarbonate or acrylic plastic.