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
A vehicle carrying explosives has crashed with another vehicle. You should not pull them apart until:
Where should drivers keep the shipping papers of hazardous materials?
The National Response Center must be called whenever which of the following occurs as a result of a hazmat incident or accident?
In order to communicate the risk of the cargo, shippers must do all of the following except:
Compressed gas cylinders that will not hold labels will _____.
What shape are hazmat placards?
When fueling a placarded vehicle, people must be:
The power unit of a placarded vehicle must have a fire extinguisher with a UL rating of at least _____ B:C
Packages containing hazardous material must be:
An ID number for material that is used for items only shipped in the US and Canada will be preceded by:
The hazard class of all materials specifies ________.
Smoking should be avoided within any vehicle containing:
To decide which placards to use, you need to know the amount being shipped, the material's hazard class, and:
Before pulling apart vehicles in an accident involving Class 1 materials:
A Class 6 material leak should in many cases be handled the same as:
Bulk packaging is ________.
Nitric acid of what concentration should never be above any other product?
What are portable tanks?
What placard should you use if your vehicle contains any amount of Mass Explosives?
Moving an improperly placarded vehicle is allowed: