A "Warning Signal" is a visual or auditory cue that indicates potential danger or the need for caution. These signals are designed to alert individuals to take necessary precautions or to avoid certain areas. Common examples include flashing lights, sirens, or specific colors like red or yellow. In various contexts, such as traffic safety or emergency response, warning signals play a crucial role in preventing accidents and ensuring public safety. They help people make informed decisions quickly, whether it's stopping at a traffic light or evacuating a building during a fire drill.