What type of glass is the rear window of most vehicles?

• A. Laminated
• B. Insulated
• C. Tempered
• D. Lexon

Answer: (C)

Tempered safety glass is used for the rear window because it’s heat-treated to be stronger and, if it breaks, it shatters into small, blunt pieces rather than sharp shards. This reduces the risk of serious injury to passengers and keeps the window safer to handle after damage. The front windshield, by contrast, is usually laminated to stay in one piece after impact, which is why the rear window isn’t typically laminated. Insulated glass isn’t used in cars for this purpose, since it’s designed for thermal insulation rather than safety, and Lexon (polycarbonate) isn’t the standard material for vehicle rear windows.