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Iowa CDL Permit Test - HazMat

(From the 2021 Iowa CDL driver handbook)
Number of questions: 30
Passing score: 24
Directions: 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 three possible answer choices. Test questions come from the Iowa Commercial Driver License Manual. Questions come from the chapters covering: Hazardous Materials, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. The Hazardous Materials endorsement can be used with Class A, B and C CDL.
You have made error so far
Passing grade —
6 or fewer errors

Hazardous materials shipping papers may be:

Kept in a pouch attached to the driver's side door.
Taped to the passenger's side window.
Hidden under a seat.

If you are transporting hazardous materials and the cargo is on fire, you should:

Try to put it out with a fire extinguisher.
Contact emergency personnel and let them battle the fire.
Hope the fire goes out by itself.

When a shipper packages hazardous materials, they certify:

That the package does not contain hazardous materials.
That the package has been prepared in compliance with the rules.
That the package was packed at a different location.

Placards showing the type of hazardous materials in a vehicle are usually which shape?

A tall rectangle
A triangle
A diamond

Which type of material may be required to have a transport index?


A placard indicating hazardous materials is shaped like a:

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