What are the lifeline signals?

Lifeline signals are visual or auditory signals used to indicate distress or the need for assistance, particularly in emergency situations. These signals can include hand signals, flares, whistles, or emergency beacons. In various contexts, such as outdoor activities or maritime operations, they serve to alert others to a person's urgent need for help. Effective use of lifeline signals can significantly enhance safety and improve the chances of timely rescue.