HAZMAT CDL Practice Test

What hazard must you be aware of when transporting Division 4.3 materials?

1. They are explosive

2. They can create a fire hazard when wet

3. They are corrosive to skin

4. They are radioactive

The correct answer is: They can create a fire hazard when wet

When transporting Division 4.3 materials, it is crucial to be aware that these materials can create a fire hazard when they come into contact with water. Division 4.3 is designated for materials known as "material that emit flammable gases when wet." This means that upon exposure to moisture or water, these substances can react to produce flammable gases, which can lead to dangerous fire risks during transport and handling. This characteristic is essential for maintaining safety protocols while transporting these materials, as it directs drivers and handlers to take specific precautions to avoid water exposure. Understanding this risk helps ensure that appropriate measures are taken to prevent accidents that could arise from such reactions, including securing the load from moisture and having proper emergency response strategies in place. Awareness of this hazard assists in reinforcing safe practices, educating personnel about the nature of these materials, and ensuring the implementation of necessary safety measures throughout the transportation process.