Emergency vehicles at the airport utilize which type of signals?

Emergency vehicles at the airport utilize both audible and visible signals to ensure maximum visibility and awareness among drivers and pedestrians. The use of these signals is vital for several reasons. Audible signals, such as sirens or horns, alert individuals to the presence of an emergency vehicle, prompting them to yield the right of way. This is especially crucial in the busy, fast-paced environment of an airport where time is often critical for emergencies.

Visible signals, such as flashing lights, further enhance the vehicle's presence, allowing other drivers and personnel to see the vehicle approaching, even from a distance or during low-visibility conditions. The combination of audible and visual signals is standard practice not only in airports but also in emergency response across various environments, as it greatly increases the likelihood that other road users will notice the vehicle and respond appropriately.

Other options may suggest a limited response, which does not fully comply with the comprehensive safety standards and practices established for emergency situations, especially in an airport setting where safety is paramount.