Emergency lighting refers to lighting systems designed to provide illumination during power outages or emergencies. These lights are crucial for ensuring safety, helping people navigate safely in dark or hazardous conditions. They are commonly found in public buildings, such as hospitals, schools, and offices, and are often powered by backup batteries. Typically, emergency lighting includes exit signs and emergency backup lights that activate automatically when the main power supply fails. These systems are tested regularly to ensure they function correctly when needed, providing essential guidance and reducing panic during emergencies.