Hazardous Materials (Hazmat) Flashcards

What does a Hazardous Materials Endorsement (H) on a CDL require?

Answer: A background check and a knowledge test

The H endorsement requires passing a knowledge test and a Transportation Security Administration background check.

When must placards be readable and properly displayed on a hazmat vehicle?

Answer: On all four sides of the vehicle

Placards must be displayed on the front, rear, and both sides of the vehicle.

What should a driver do if shipping papers do not match the materials being loaded?

Answer: Refuse to transport until the discrepancy is resolved

Drivers should not transport hazmat when papers and the actual load do not match; the issue must be corrected first.

Which class of hazardous materials includes gases such as compressed or liquefied gases?

Answer: Class 2

Class 2 covers gases, including flammable, non-flammable, and poisonous gases.

What is the main reason for keeping a fire extinguisher in proper working order on a hazmat vehicle?

Answer: To extinguish small fires before they spread to the cargo

A working fire extinguisher lets the driver control small fires before they reach hazardous cargo.

Where may a placarded hazmat vehicle generally NOT be parked?

Answer: Within 5 feet of the traveled part of a road except for brief operational needs

Placarded vehicles generally must not park within 5 feet of the traveled portion of a road except briefly for operations.

What does the term 'hazardous material' broadly refer to?

Answer: Products that pose an unreasonable risk to health, safety, and property during transport

Hazardous materials are substances that can pose an unreasonable risk to health, safety, and property when transported.