When are loads allowed to be overseen on a truck's load carrying platform?

Loads should only be overseen on a truck's load carrying platform if the driver allows it, which emphasizes the importance of driver control and safety. Allowing the driver to make this judgment helps ensure that the operations are conducted in a safe manner, as they are responsible for the vehicle's handling and load stability. This practice limits distractions and maintains focus on the road, as having people overseeing the loads can divert attention from driving tasks and increase the risk of accidents.

The other options suggest scenarios where oversight might occur regularly or at any time, which could lead to increased risk or distraction for the driver. The correct answer keeps the decision within the driver's authority and promotes a safer driving environment.