When are vehicles allowed to load or unload in areas marked with 'No loading or unloading at the times shown'?

The correct choice indicates that vehicles are allowed to load or unload only during designated hours. This is in line with the regulation that 'No loading or unloading at the times shown' conveys. These markings are used to manage traffic flow and safety in areas where loading or unloading could obstruct the road or cause hazards to other drivers and pedestrians.

The visibility of these restrictions seeks to minimize congestion during peak times by indicating specific hours where loading or unloading activities must cease. Such regulations are typically established to ensure that the space remains clear for other vehicles, thereby enhancing safety and efficiency in traffic management. Therefore, adherence to these designated hours helps promote orderly loading and unloading practices while respecting the flow of traffic.