Save Time and Get a Pass Guarantee! LIMITED-TIME OFFER: Get CDL PREMIUM Now and SAVE $64! Upgrade To Premium


View instructions
Any driver, regardless of the vehicle Class, who wants to haul hazardous materials, must add an “H” endorsement to their CDL. In order to obtain the Hazmat endorsement drivers are required to pass a Transportation Security Administration background check and a knowledge test. The Iowa hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The IA CDL hazmat test covers the information found in the Iowa CDL Manual. Study the chapter covering hazardous materials to learn how to recognize, handle, and transport Hazmat, then take this practice test to prepare for your exam!
1. Which of the following is NOT something you must know in order to determine if you need to use placards?
The manufacturing date of the materials.
The amount of all hazardous materials of all classes on your vehicle.
The amount of hazardous material being shipped.
2. Radial and bias-ply tires:
should be used together.
should be used together only when driving in packed snow.
should not be used together.
3. Unless excepted, shipping papers must list:
a proper description of the truck.
the address of the driver.
an emergency response telephone number.
4. At a rest area, you discover your hazardous materials shipments is leaking. There is no phone around. You should:
keep driving slowly until you reach a truck stop.
continue driving in order to find a phone.
send someone else for help and give that person all of the necessary information.
5. A material’s hazard class reflects:
the risks associated with the material.
the type of packaging required to transport the material.
the methods for handling spills or leaks in the absence of fires.
6. When you leave your vehicle you should:
apply the service brake.
leave the key in the ignition.
None of the above.
7. If your brakes get wet, it can cause them:
to be weak.
to apply unevenly.
All of the above.
8. What is Gross Vehicle Weight?
The total weight of a single vehicle, including its load
The total weight of a single vehicle, excluding its load
The total weight of the cargo
9. Which of the following statements about portable tanks is TRUE?
They are not permanently attached to a vehicle
They must show the lessee or owner's name
All of the above.
10. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
written in a larger font.
identified by an "H" placed before the shipping description.
entered first.
Page 1 of 3
Next page  
Rate This Free Test
4.5 out of 5
based on 165 votes

Hazmat CDL Test (IA)

Number of questions: 30
Correct answers to pass:24
Passing score:80%
Number of questions: 30
Correct answers to pass:24
Passing score:80%
Share This Online CDL Test