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Difficulty: Very hardEmergency Equipment Requirements

Under FMCSA safety regulations, a commercial motor vehicle transporting a placarded load of hazardous materials is permitted to satisfy its mandatory fire extinguisher requirement by carrying two separate 5 B:C rated fire extinguishers instead of a single 10 B:C rated unit, provided both are fully charged and securely mounted.

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The statement is false. Vehicles transporting placarded hazardous materials must carry a single fire extinguisher with a minimum rating of 10 B:C, and cannot combine two 5 B:C units.
The statement is false because FMCSA regulations strictly mandate that a vehicle transporting a placarded hazardous materials load must carry a single fire extinguisher with a minimum UL rating of 10 B:C. While a specific provision allows non-hazardous vehicles to substitute two 4 B:C extinguishers for one 5 B:C unit, this cumulative rating exception does not apply to hazardous materials transport.

Step-by-Step Solution

1
Identify the cargo type and regulatory threshold mentioned in the scenario.
The vehicle is transporting a placarded load of hazardous materials.
Fire extinguisher requirements change significantly depending on whether the cargo requires hazardous materials placarding.
2
Determine the FMCSA fire extinguisher requirement for placarded hazardous materials.
FMCSA strictly requires a power unit transporting placarded hazmat to have a fire extinguisher with a minimum UL rating of 10 B:C or more.
Hazardous materials present a higher risk of intense chemical or electrical fires, demanding a single higher capacity extinguisher.
3
Evaluate the proposed substitution of two 5 B:C rated extinguishers.
The regulations do not permit combining two smaller extinguishers to meet the 10 B:C hazmat requirement, though a specific exception allowing two 4 B:C units does exist solely for non-hazardous loads.
During a severe hazardous materials fire, a driver must have immediate access to a single, high-capacity suppression tool rather than attempting to manage multiple smaller, inadequate units sequentially.

Key Concept

Fire Extinguisher Minimum Rating Requirements
Estimated Time:1m 0s
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Topics

Emergency Equipment Requirements

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