An exit sign is a safety feature commonly found in buildings, indicating the way to an emergency exit. These signs are usually illuminated and marked with the word "EXIT" in bold letters, making them easily visible even in low-light conditions. They help guide people to safety during emergencies, such as fires or power outages. Exit signs are often required by building codes and regulations to ensure public safety. They can be found in various locations, including halls, stairwells, and doorways. Many exit signs are designed to be powered by backup batteries, ensuring they remain lit even if the main power supply fails.