Why is it important to use a helper when backing up?

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Using a helper when backing up is crucial primarily because there are blind spots that a driver cannot see from their position in the vehicle. Large trucks and buses often have significant rear and side blind spots, which can make it difficult to detect obstacles, pedestrians, or other vehicles when reversing. A helper standing outside the vehicle can provide valuable assistance by monitoring these blind spots and offering guidance through signals or verbal communication. This reduces the risk of accidents and ensures safer maneuvering, especially in tighter spaces or congested areas. The presence of a helper helps to enhance overall situational awareness while performing a backing maneuver, making it an essential practice for drivers of large commercial vehicles.