Passive safety systems are designed to protect people without requiring any action from them during an emergency. These systems work automatically to minimize harm, relying on the laws of physics and engineering principles. For example, in a car, features like crumple zones and airbags help absorb impact energy and cushion passengers during a collision. In buildings, passive safety systems include fire-resistant materials and emergency exits that guide occupants to safety. These systems are crucial because they enhance safety without needing active intervention, making them reliable in critical situations when every second counts.