Car windshield as safety system?
Intact windshields are important for driving safely and without the risk of a sudden breakage of the glass. For example, the stability of the windshield glass is also a pre-condition for the air bag to protect you reliably. Because the air bag needs to support itself on the inner side of the windshield in case of a head-on collision. If the windshield already has cracks, it can no longer withstand the contact pressure of the air bag and will break. In the worst case, the air bag loses its function such that the risk of injury increases considerably.