Guidance signals, also known as beacons, are visual or auditory signals used to provide direction and navigation. They are often used in aviation, marine navigation, and other forms of transportation. Beacons can be used to indicate the location of a destination, provide warnings, or provide guidance for a specific route. They can also be used to alert people to potential hazards or to provide information about the environment. Beacons can be stationary or mobile, and they can be powered by electricity, batteries, or solar energy.