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
You must placard a shipment containing class 4.1 Flammable Solid when:
Before moving tanks of hazardous materials, all valves and manhole covers must be:
If your work requires, you may temporarily park within 5 feet of the road with the most of hazardous materials. The following items are the exceptions that forbid parking this close to the edge of the road:
All hazardous materials will be identified with a number or name that reflects its risk called its:
What should the carrier of hazardous materials do before transportation?
How should a shipper label hazardous materials?
Placards are used to _______.
The responsibility for putting or attaching required markings on packages is:
When should you inspect your vehicle when you are transporting hazardous materials?
Cargo heaters are generally prohibited in cargo space that contains any of the following except:
A placarded vehicle, or one that has cargo tanks used for hazmat, must do what at a railroad crossing?
If a hazard class is listed as "Forbidden", the driver should:
A vehicle placarded for hazardous materials must have placards on ____ sides.
You must notify _____ of any spills that exceed the RQ.
A portable tank with a capacity of more than 1,000 gallons requires the ID number to be marked in how many places?
All of the following are true of shipping papers except:
Which signals may be used to warn of a stopped vehicle which contains explosives?
The responsibility of reporting incidents and accidents to the proper agencies belongs to:
A carrier must give to the driver transporting Division 1.1, 1.2, or 1.3 (Class A or B) explosives:
A "transport index" refers to products that are _______.