Which of the following is NOT part of a proper backing maneuver?

Answer: C — Depend solely on camera systems

The correct choice highlights that relying solely on camera systems is not part of a proper backing maneuver. While camera systems can be valuable tools that provide additional visibility, they should not be the only means of monitoring the surroundings when backing up. Proper backing procedures involve a comprehensive approach that includes using mirrors, looking for pedestrians, and utilizing a spotter if one is available. Checking mirrors allows the driver to see areas that are not visible directly from the driver's seat, helping to ensure a wider view of the surroundings. Being vigilant for pedestrians is essential for safety, as pedestrians may be in blind spots. Utilizing a spotter adds an extra layer of safety, as they can guide the driver and provide real-time information about the environment that may not be captured by camera systems alone. Hence, the correct approach to backing a commercial vehicle necessitates active engagement and multiple methods of situational awareness, rather than relying on technology alone.