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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 California hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The CA CDL hazmat test covers the information found in the California 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. Do not load _______ products in a cargo space that has a heater.
Class 1, 2.1 and 3
Class 1, 2 and 4
Class 1, 3 and 4.1
2. If you are being tailgated, you should:
move to the left lane.
increase your following distance.
speed up.
3. Placards must be at least _____ inches square.
4. What is the most important reason to inspect your vehicle?
Your safety and that of other road users.
Saving money by preventing costly repairs.
Vehicle inspection is required by federal and state laws.
5. If HazMat is spilling from your vehicle while you are driving, you should:
continue driving in order to find a truck stop.
continue driving in order to find a phone booth.
not move your vehicle any more than safety requires.
6. When checking the lights before driving:
make sure the parking brake is not set.
you should check them from inside the vehicle.
you should turn off the engine.
7. When you're going uphill and a heavy load is slowing you down, you should:
shift into a lower gear.
stay in the left lane if you can.
pass another slow vehicle to gain speed.
8. When transporting chlorine in cargo tanks, you must have _______ in the vehicle.
an approved gas mask
5 reflective triangles
approved goggles
9. With brake drums, if brakes become too hot:
the brakes may stop working.
the brakes will supply too much power to the drive wheels.
your ABS will malfunction.
10. Drivers of vehicles transporting HazMat should:
ensure that all packages are labeled as flammable materials.
ensure that all relevant placards are carried in the passenger compartment.
compare the shipping paper to the markings and labels.
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CA CDL Hazmat Test

Number of questions: 30
Correct answers to pass:24
Passing score:80%
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