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Iowa CDL Permit Test - HazMat

(From the 2020 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, ยง383.5. 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
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1.
A driver should ensure that:
The shipping paper matches the markings and labels on packages.
The shipping paper is written in code.
All packages are labeled as poison.
2.
How often do hazardous materials employees need to be trained?
At least once a week
At least once every three years
At least one every 10 years
3.
To know which placard to use, you need to know:
The hazard class of the materials.
The type of container that is holding the materials.
The destination of the materials.
4.
When loading compressed gas, the liquid discharge valves should be:
Closed.
Removed.
Opened.
5.
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.
6.
When approaching a railroad crossing while transporting chlorine:
You must stop before crossing the tracks.
You must reduce your speed before crossing the tracks.
You may proceed across the tracks without stopping if no warning lights are flashing.
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