Why is it important for flares to be functional in an emergency situation?

Flares are vital in emergency situations primarily because they effectively notify nearby vessels or rescuers of distress. The bright, visible light emitted from flares can be seen from a considerable distance, even in the dark or poor visibility conditions. This capability is crucial for attracting attention and signaling for help when immediate rescue is needed. By using flares, individuals can alert others in the vicinity about their situation, increasing the chances of a timely and successful rescue.

While the legal requirement for flares and their potential uses for light and heat are important factors to consider as part of overall safety equipment, their primary function as a signaling device makes them indispensable in emergencies where every second counts for gaining assistance.