Glass breaker
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A glass breaker is a hand tool designed to break through window glass in an emergency. It is a common safety device found in vehicles to aid in the emergency extrication of occupants from a vehicle, a
An emergency hammer in a train, with the red spot in the window demarcating the preferred point of breakage.
Laminated glass
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Laminated glass is a type of safety glass consisting of two or more layers of glass with one or more thin polymer interlayers between them which prevent the glass from breaking into large sharp pieces
Glass breaker
…made of harder metals makes breaking the glass easier. Some sources have found that tungsten carbide tips make breaking glass less difficult. However, laminated glass cannot be broken by any glass breakers on the market (but can be broken by other sharp tools as a chisel and hammer)—glass breakers are only effective…
Automobile windshield with "spider web" cracking typical of laminated safety glass.
Firefighters breaking through a laminated windshield