Final answer:
If you lose sight of the navigator while reversing a truck, immediately stop to avoid potential accidents. Ensure communication with the navigator is established before resuming the maneuver, keeping in mind the distance and stopping time of the truck.
Step-by-step explanation:
When reversing a truck, if you lose sight of the navigator guiding you back, it is essential for safety to immediately stop the truck. Losing visual contact with the navigator could lead to accidents or collisions. The paramount concern here is safety. Hence, the driver must ensure they stop and regain sight of the navigator or ask for guidance via communication before continuing. It’s crucial to know the distance the truck covers before you hit the brakes, the time it takes for the truck to stop after the brakes are applied, and the total stopping distance. Understanding these factors will aid the driver in making safe reversing maneuvers.