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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 Colorado hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The CO CDL hazmat test covers the information found in the Colorado 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. When driving in work zones you should:
Drive slowly and carefully.
Observe the posted speed limits at all times.
Use your four-way flashers or brake lights to warn drivers behind you.
All of the above.
2. All drivers involved in transporting hazardous materials must:
refuse leaking packages.
know the security risks of hazardous materials transportation.
follow all special rules about transporting hazardous materials.
All of the above.
3. How many reflective triangles/emergency reflectors should you carry?
4. You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
Keep moving at the present speed and steer very gently back onto the pavement.
Brake hard to slow the vehicle, then steer sharply onto the pavement.
None of the above.
5. When you discover a fire, if the trailer doors are hot you should not open them because:
the temperature of the trailer should not be changed in any way.
with air many fires do less damage.
you should use the fire extinguisher on the door.
opening the doors lets air in and may make the fire flare up.
6. If you are being tailgated, you should:
speed up.
drive on the shoulder.
turn on your taillights.
try to let the other vehicle pass.
7. If a material is transported in a reportable quantity, the shipper displays the letters ___ on the shipping paper and package.
8. The shipper must certify on the shipping paper:
that the package is safe.
that the shipment has been prepared according to the rules.
that the package contains hazardous materials.
Al of the above.
9. The hazardous materials regulations require vehicles transporting certain types or quantities of HazMat to display warning signs called:
reflective triangles.
HazMat warnings.
advance warning signs.
10. Which of the following hazard classes should NOT be placed into a temperature-controlled trailer?
Classes 1, 2.1, and 3
Classes 1, 3, and 4
Classes 1, 3, and 5.1
Classes 1, 4, and 5
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CDL Hazmat Test CO

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