Final answer:
Placard vehicles that carry dry-cleaning solvents, fire extinguishers, fire extinguisher systems, or foaming plastics should ideally have fire extinguishers with a UL rating. A UL rating is a classification system used to assess the effectiveness of fire extinguishers. It indicates the extinguisher's ability to put out fires of specific types and sizes.
Step-by-step explanation:
Placard vehicles that carry dry-cleaning solvents, fire extinguishers, fire extinguisher systems, or foaming plastics should ideally have fire extinguishers with a UL rating.
A UL rating is a classification system used to assess the effectiveness of fire extinguishers. It indicates the extinguisher's ability to put out fires of specific types and sizes.
For example, a fire extinguisher with a UL rating of 2A:10B:C can extinguish fires involving ordinary combustibles (like wood), flammable liquids, and electrical equipment.