Why are hand signals used on ARFF scenes?

• A. High noise levels or radio failure
• B. Night operations require glowing wands
• C. To communicate with pilots via blinking lights
• D. To replace verbal commands entirely

Answer: (A)

In an ARFF scene, the environment is incredibly loud from jet engines, water streams, alarms, and other equipment, and radios can become difficult to hear or fail. Hand signals provide a clear, visual way for ground crews to convey precise instructions to pilots and to coordinate actions among responders when verbal communication isn’t reliable. They ensure essential directions—like guiding a taxi, stopping, or signaling to proceed—are seen and understood even when sound is overwhelming or radios malfunction. Hand signals are a reliable supplement to verbal commands, not a total replacement. For nighttime visibility, illuminated wands can help, but the primary purpose remains overcoming noise and communication failures.