Colorado HazMat Test (CO) 2026

4.9 out of 5 (177 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you preparing to obtain your HazMat endorsement for your commercial driver's license in Colorado? Our comprehensive Colorado HazMat CDL test is designed specifically to help you succeed. This DMV HazMat test offers an in-depth review of all necessary topics, including identification, handling, transportation, emergency procedures, placarding, and TSA security requirements. Each aspect is crucial for ensuring safe and legal transportation of hazardous materials across Colorado and beyond. Understanding the importance of real-time emergency response information while on the road is a key component of this Colorado permit practice test. In the event of an accident, having immediate access to this information can make a significant difference, and our Colorado CDL HazMat test ensures you are well-prepared for such situations. The Colorado permit test practice consists of 20 multiple-choice questions, crafted to reflect the types of questions you'll encounter on the actual DMV permit test. To pass, you must correctly answer at least 16 questions. This passing criterion helps you gauge your preparedness and ensures you have a strong grasp of the required knowledge. One of the unique features of our Colorado driving test practice is its focus on the specific endorsement. The questions are drawn directly from the official Colorado driver's manual, the same source used for the real DMV permit test. If it's not in the manual, it won't be on the test. This alignment ensures that your study efforts are efficient and targeted. Moreover, unlike the actual test, our Colorado HazMat test is not timed. You can take as much time as you need to carefully consider each question and answer, allowing for a thorough understanding of the material. This practice approach helps build confidence and reduces the pressure often associated with timed exams. Remember, obtaining your HazMat endorsement is a step towards enhancing your commercial driving career. While the HazMat practice test focuses on the endorsement-specific content, you will also need to pass the general knowledge test to get your commercial driver's license. If you're also preparing for the CDL general knowledge test, our website offers comprehensive prep tests to support your success in that area as well.
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Sample Colorado HazMat Test Questions

Question 1

How many numbered hazardous-material classes are recognized by the hazardous materials regulations?

  1. A 7
  2. B 9
  3. C 23
  4. D 32

Correct answer: B – 9

There are nine numbered hazardous-material classes. The class reflects the type of risk associated with a material, and some classes are divided into more specific divisions. The table in 49 CFR § 173.2 lists Classes 1 through 9 and identifies the regulations containing the definition for each class or division.

Source: Commercial Driver License Manual — § 9.3.1, “Definitions”, 49 CFR § 173.2 – Hazardous material classes and index to hazard class definitions

Question 2

At a rest area, you discover hazardous material slowly leaking from your vehicle and no telephone is available. What should you do?

  1. A Drive to the nearest location with a telephone
  2. B Unload the leaking package and leave to get help
  3. C Secure the area, remain with the vehicle, and send someone else for help
  4. D Remove visible evidence of the leak and continue the trip

Correct answer: C – Secure the area, remain with the vehicle, and send someone else for help

Colorado's CDL manual directs the driver to park, secure the area, remain there, and call for help or send someone else. Do not continue driving merely to locate a telephone or truck stop. The person seeking help should carry the emergency description, exact location, carrier information, and the material's proper shipping name, hazard class, and identification number when known.

Source: Commercial Driver License Manual — § 9.7, “Hazardous Materials -Emergencies”

Question 3

The letters “RQ” appear beside a hazardous material’s basic description on the shipping paper. What do they indicate?

  1. A The package contains only one type of material
  2. B The shipment has a declared value above $1,000
  3. C Every release, regardless of quantity, must be reported by the shipper
  4. D A release meeting the reportable quantity must be reported by you or your employer

Correct answer: D – A release meeting the reportable quantity must be reported by you or your employer

The RQ notation identifies a hazardous substance being transported in at least its reportable quantity in one package. If that quantity is unintentionally released, federal rules require a written incident report. Colorado’s CDL manual describes this responsibility as applying to the driver or employer. RQ does not refer to package contents or monetary value.

Source: Commercial Driver License Manual — § 9.3.3, “The Hazardous Materials Table”, 49 CFR § 172.203(c)(2) – Additional Description Requirements, 49 CFR § 171.16(a)(2) – Detailed Hazardous Materials Incident Reports

Question 4

While loading or unloading, smoking is prohibited around which hazardous materials?

  1. A Class 1, Division 2.2, Class 4, and Class 7
  2. B Division 2.1, Class 3, Class 4, and Class 7
  3. C Class 1, Division 2.1, Class 3, Class 4, and Class 5
  4. D All Class 2 materials, plus Classes 3, 4, and 5

Correct answer: C – Class 1, Division 2.1, Class 3, Class 4, and Class 5

Federal hazardous-materials rules prohibit smoking on or around a vehicle while Class 1 explosives, Division 2.1 flammable gas, Class 3 flammable liquid, Class 4 flammable solid, or Class 5 oxidizing material is being loaded or unloaded. Fire must also be kept away, and nearby people must be prevented from smoking or carrying an open flame.

Source: Commercial Driver License Manual — § 9.4, “Loading and Unloading”, 49 CFR § 177.834(c)–(d) – General Requirements

Question 5

Which information must be displayed as part of the hazardous-material marking on a cargo tank or other bulk packaging?

  1. A The shipper’s telephone number
  2. B The material’s identification number
  3. C The driver’s CDL class
  4. D The package’s delivery date

Correct answer: B – The material’s identification number

Federal marking rules require bulk packages to display the identification number assigned to the hazardous material. Depending on the packaging and shipment, the number may appear on an orange panel, an appropriate placard, or a white square-on-point display. A shipper’s telephone number, the driver’s license class, and the delivery date do not replace the required identification number.

Source: Commercial Driver License Manual — § 9.5.1, “Markings”, 49 CFR § 172.302(a) – General Marking Requirements for Bulk Packagings

Question 6

How must hazardous-material packages be secured inside a vehicle?

  1. A Placed loosely along the trailer walls
  2. B Stacked near the driver’s compartment
  3. C Braced or otherwise secured against shifting
  4. D Placed on top of all nonhazardous freight

Correct answer: C – Braced or otherwise secured against shifting

Federal hazardous-materials rules require packages that are not permanently attached to the vehicle to be secured against shifting, including movement between packages. Packages with valves or fittings must also be loaded to minimize the likelihood of damage. Proper blocking, bracing, or other securement protects the packages during normal starts, stops, turns, and roadway movement.

Source: Commercial Driver License Manual — § 9.4, “Loading and Unloading”, 49 CFR § 177.834(a) – General Requirements

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