What might happen if a worker ignores a placard on a truck?

Ignoring a placard on a truck can lead to significant safety hazards, which is why this answer is the correct choice. Placards are critical for communicating important information about the load being transported, such as whether it contains hazardous materials, outlines special handling procedures, or indicates potential risks associated with the cargo.

If a worker disregards these warnings, they may unknowingly expose themselves and their colleagues to dangerous situations or materials that could cause injury or contamination. For instance, if a placard indicates that the load is flammable or toxic, without this information, workers might not take the necessary precautions, which could result in accidents, health risks, or even severe legal ramifications for irresponsible handling of hazardous materials.

In contrast, ignoring the placard does not lead to increased work efficiency, nor does it ensure the truck will be unloaded, and it certainly does not entail no consequences. Understanding these risks ultimately underscores the importance of adherence to safety protocols in the workplace.