Texas DMV CDL HazMat Quick Practice Test

Texas DMV CDL HazMat Quick Practice Test For 2026

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. If loading corrosive materials, you should not:

Roll the containers.
Load the containers by hand.
Use the vehicle’s emergency brake.
Ask someone to help you.

2. When a shipper packages hazardous materials, they certify that the package:

Does not contain hazardous materials.
Has been prepared in compliance with the rules.
Was packed at a specific location.
Will be placed on the trailer first.

3. If there is a collision involving a vehicle transporting Class 1 explosives, the driver should:

Not warn others of the danger.
Allow smoking near the vehicle.
Keep the explosives inside the vehicle until after separating the vehicles involved in the collision.
Remove the explosives from the vehicle before separating the vehicles involved in the collision.

4. When loading compressed gas, the liquid discharge valves should be:

Closed.
Greased.
Open.
Removed.

5. When driving, you should stop and take a break ____ to avoid becoming too tired.

Every half hour
Every hour
Every two hours
Every six hours

6. If there are no warning gates or lights at a railroad crossing, you should:

Not worry because the tracks are likely abandoned.
Park your vehicle and walk up to the tracks to determine if a train is approaching.
Look down the tracks in both directions to ensure that no trains are approaching.
Do whatever surrounding vehicles are doing.

7. If a product requires a "Poison Inhalation Hazard" placard, the placard must be used when transporting:

More than 100 pounds of the product.
More than 50 pounds of the product.
Any amount of the product.
The product in a leaking container.

8. When carrying Division 1.1, 1.2, or 1.3 explosives, your vehicle should not be:

Parked within 300 feet of a bridge.
Parked within 40 feet of the road.
Driven in rain or snow.

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