The windshield (North American English) or windscreen (Commonwealth English except Canada) of an aircraft, car, bus, motorbike, truck, train, boat or streetcar is the front window, which provides visibility while protecting occupants from the elements. Modern windshields are generally made of laminated safety glass, a type of treated glass, which consists of, typically, two curved sheets of glass with a plastic layer laminated between them for safety, and bonded into the window frame.
Motorcycle windshields are often made of high-impact polycarbonate or acrylic plastic.