Free Iowa CDL HazMat Practice Test 2023

Welcome to the free CDL hazmat practice test for Iowa drivers. As you know, Hazardous Materials (HazMat) endorsement which allows you to carry a wider range of loads, including those objects with more dangerous items requires more training. As a CDL holder, if you want to expand your horizons, you have to get HazMat. The CDL hazmat tests will test your knowledge of various aspects of the safe transport and handling of hazardous materials. Our Iowa CDL Practice Test will give you the real experience of the exam as you will be more familiar with both the test format and the subject. The questions are based on the Iowa CDL Manual and each question has a detailed explanation so that it is very useful for you to learn more about each topic. You can retake our CDL practice test pack as often as you want. Good luck and keep driving safely!

Our CDL practice tests:
Based on 2021 IA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IA CDL HazMat Test format:
30 questions
24 correct answers to pass
80% passing score
List of questions
What must drivers have in their possession while carrying Class 1.1 or 1.2 explosives?
There are two lists that drivers, shippers, and carriers use to find out if a material is a regulated product. One of these is the:
There is an RQ before or after the item description on the shipping paper, what does it mean?
The X in the hazardous materials column of a shipping paper entry has which of the following meaning:
A placarded vehicle must have at least how many identical placards?
What secondary hazard requires additional placarding regardless of amount carried?
Cargo tanks are bulk packaging permanently attached to a vehicle whereas portable tanks are _______.
Which factors help you determine what kind of placard should be used to transport hazardous material?
If you discover a cargo leak, identify the hazardous materials by using _______.
The basic shipment of a hazardous material should include _______.
You must use additional placards when what words appear on the package or shipping paper?
Shippers of hazardous wastes must include the word WASTE where?
Ultimately, the responsibility to know if you must use special routes or need special permits falls to:
When spills of a reportable quantity occur, the responsibility to report it lays with either the driver or:
The letters of the shipping name must be, at minimum, how tall on portable tanks with capacities of more than 1,000 gallons?
When should you transport leaking containers?
Hazmat package labels are what shape?
When loading or unloading compressed gas:
A hazardous material classified as forbidden ______.
In vehicles transporting Division 1.1, 1.2, or 1.3 materials, the portion of the interior in contact with the load must be lined with: