Manufacturing Skill Standards Council (MSSC) Safety Assessment Practice Test

A worker should not unload a truck __________________.

1. It is facing downhill

2. It has been sitting more than six hours

3. They do not know the driver

4. They do not understand a placard on the truck

The correct answer is: They do not understand a placard on the truck

A worker should not unload a truck when they do not understand a placard on the truck because placards provide essential information about the contents of the vehicle, including potential hazards and safety precautions. Understanding these placards is crucial for ensuring personal safety and the safety of others nearby. If a worker is unsure about the meaning of a placard, they may not be aware of hazardous materials or conditions that could pose risks, such as flammable substances or toxic materials. It's essential to have clarity and knowledge about what is being handled before proceeding with an unloading task to prevent accidents and injuries. The other options, while important safety considerations, do not directly emphasize the necessity of understanding hazardous materials signage as the basis for safe unloading practices. For instance, while unloading a truck facing downhill could create instability, or knowing the driver might impact the worker's readiness for unloading, these factors are secondary to the critical need for comprehending hazard warnings conveyed by placards.