HazMat

This endorsement is required to haul hazardous materials as defined in Title 49, CFR, §383.5. To receive this endorsement, drivers must also pass a Transportation Security Administration background.. Read More

This endorsement is required to haul hazardous materials as defined in Title 49, CFR, §383.5. To receive this endorsement, drivers must also pass a Transportation Security Administration background check. To receive this endorsement, applicants must pass a test. The test consists of 30 multiple choice questions. To pass, the applicant must answer at least 24 questions correctly. Each question has four possible answer choices. Test questions come from the Colorado Commercial Driver License Manual. Questions come from the chapter covering: Hazardous Materials. The Hazardous Materials endorsement can be used with Class A, B and C CDL.

Number of Question
Passing Score

7. Before any flammable liquids are loaded or unloaded, the engine should be:

Explanation
Before loading or unloading a tank with flammable liquids, you should turn off the engine, unless running the engine is necessary to operate a pump.

8. To operate a vehicle that is used to transport hazardous materials, a driver must have:

Explanation
You must have a commercial driver license with a hazardous materials endorsement before driving a vehicle of any size that is used to transport hazardous materials, even if the vehicle is not transporting hazardous materials at the time of operation.

9. What shape is a placard indicating hazardous materials?

Explanation
In general, vehicles carrying hazardous materials are required to display diamond-shaped warning signs on all four sides. These warning signs are called "placards."

10. How must a shipper notify a driver of the risks associated with their cargo?

Explanation
Shippers of hazardous cargo must alert drivers and others to relevant hazards through proper shipping papers, hazard warning labels on packages, emergency response information, and placards.

11. If a package contains liquid containers, the package must display:

Explanation
Packages containing liquid containers should display arrows pointing in the correct upright direction. These packages should be placed facing the correct direction.

12. If transporting explosives, you may leave your vehicle unattended:

Explanation
When transporting hazardous materials, you may leave your vehicle unattended in a safe haven. A safe haven is a location that has been approved for parking unattended vehicles that are loaded with explosives.
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