What is a key reason to agree on a hand signal with a helper?

Agreeing on a hand signal with a helper is crucial for maintaining clear communication. When operating a commercial vehicle, especially in situations like backing up or maneuvering in tight spaces, visual cues become essential. Drivers may have limited visibility, and a helper can provide guidance through hand signals. This method reduces the chance of miscommunication that could lead to accidents or injuries.

By establishing agreed-upon signals, the driver and helper can effectively coordinate their movements without verbal instructions that may be difficult to hear over engine noise or other environmental factors. Clear communication enhances safety and ensures that both parties understand each other’s intentions, thereby facilitating smoother operations and improving overall safety on the road.