What system aids pilots in avoiding traffic collisions during flight?

The Traffic Alert and Collision Avoidance System (TCAS) is specifically designed to enhance flight safety by providing pilots with real-time information on nearby aircraft. It works through transponder signals to detect the proximity of other aircraft and alerts pilots to potential collisions. TCAS issues visual and auditory alerts indicating whether there is a risk of collision, and it can recommend corrective actions, such as climbing or descending, to avoid a collision. This makes it a critical system for maintaining situational awareness and ensuring safe separation between aircraft during flight.

In contrast, the autopilot system primarily assists in controlling the aircraft's flight path and relieving some workload from pilots but does not actively monitor surrounding air traffic. The flight management system focuses on optimizing flight plans and fuel efficiency rather than collision avoidance. The navigation system aids in directing the aircraft along its intended route, but again, it does not provide traffic collision alerts. Therefore, TCAS stands out as the dedicated system that directly addresses the need for collision avoidance in aviation.