CDL Hazardous Materials (Hazmat) Practice Test

Question 1

According to DOT regulations, which document must always accompany a hazardous materials shipment?

Accepted Answer

Shipping papers (manifest) describing the hazardous materials

Answer

A state permit for each state the shipment passes through

Answer

A certificate from the shipper's insurance company

Answer

A copy of the driver's HazMat endorsement only

Question 2

What is the purpose of placards on a vehicle transporting hazardous materials?

Accepted Answer

To warn others of the type of hazardous material being transported

Answer

To indicate the truck's weight class and cargo capacity

Answer

To show the carrier's operating authority number

Answer

To display the driver's endorsement level

Question 3

A leaking package of hazardous materials is discovered in your cargo. What should you do?

Accepted Answer

Stop safely, keep others away, and contact emergency services without touching the package

Answer

Wrap the package in plastic and continue to the destination

Answer

Open the package to identify the leak source

Answer

Place the package outside the vehicle and continue driving

Question 4

What does UN 1203 identify?

Accepted Answer

Gasoline

Answer

Diesel fuel

Answer

Propane

Answer

Acetylene

Question 5

When is a HazMat endorsement required on a CDL?

Accepted Answer

When transporting materials in quantities requiring placarding or any select agent/toxin

Answer

Only when transporting explosives or radioactive materials

Answer

Only for interstate shipments of hazardous materials

Answer

Only when the shipment exceeds $10,000 in declared value

Question 6

Which hazard class requires the most caution regarding sources of ignition?

Accepted Answer

Class 3 — Flammable Liquids

Answer

Class 6 — Poisonous Materials

Answer

Class 8 — Corrosive Materials

Answer

Class 9 — Miscellaneous Hazardous Materials