Side windows shatter, windscreens hold together
Most car side windows are made of tempered glass, which crumbles into small, blunt cubes when a hard point strikes it. Windscreens are laminated instead, with a plastic layer bonded between two sheets of glass, so they crack but stay in one piece. A growing number of newer cars use laminated side glass too, worth knowing before relying on the glass breaker fitted to firefighter knives, this all-red folder included.
