Status indicators are visual or auditory signals that provide information about the current state of a system or device. They can be found in various contexts, such as electronics, software applications, and machinery. Common examples include LED lights that show whether a device is powered on or off, or progress bars that indicate the completion of a task. These indicators help users quickly understand how a system is functioning without needing to delve into complex details. For instance, a traffic light serves as a status indicator for drivers, signaling when to stop or go, thereby enhancing safety and efficiency on the road.