How should a spotter communicate with the driver during TDR?

In the context of communicating during a TDR (Truck Driver Reversing) maneuver, using hand signals is the preferred and most effective method of communication between the spotter and the driver. Hand signals are visual cues that can convey clear instructions without the interference of noise or distractions that might be present on a busy yard. This method allows for precise and immediate guidance, ensuring that the driver can respond instantly to the spotter's directions, particularly during critical movements like reversing, which require heightened awareness of surroundings and potential hazards.

While shouting and using a radio can be effective in certain situations, they can introduce communication challenges. For instance, shouting may not be heard over background noise, and relying on a radio can lead to miscommunication if the signal is poor or if there’s a delay in response. Hence, hand signals are often the most reliable means of communication in yard operations, promoting safety and efficiency during maneuvers.