Oklahoma HazMat Test (OK) 2026

4.7 out of 5 (345 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Are you ready to take on the challenge of obtaining your HazMat endorsement in Oklahoma? Our comprehensive Oklahoma HazMat practice test is designed to give you the best preparation possible. With this Oklahoma DMV practice test, you'll get a detailed review of all the crucial topics needed for your commercial driver's license HazMat endorsement. This permit practice test covers everything from the proper identification and handling of hazardous materials to emergency procedures and placarding. It also includes essential TSA security requirements to ensure you are fully prepared. Understanding these topics is crucial, as they play a significant role in your day-to-day responsibilities as a commercial driver transporting hazardous materials. One of the unique features of our Oklahoma HazMat practice test is the emphasis on emergency response information. You will learn about the importance of having immediate access to this information, a critical factor in handling accidents safely and effectively. Each CDL HazMat test includes 20 multiple-choice questions, and you'll need to answer at least 16 correctly to pass. This diverse range of questions is designed to assess your overall understanding and readiness for the actual Oklahoma DMV HazMat test. Our Oklahoma permit test practice stands out because it is regularly updated to reflect the latest 2026 driving laws and regulations. This ensures you are studying the most relevant and up-to-date information available. The Oklahoma DMV practice test is accessible online 24/7, allowing you to take the test at a time and place that suits you best. This flexibility means you can integrate your study sessions seamlessly into your schedule, unlike traditional driving schools that set rigid times for you. For visual learners, our practice permit test questions often come with visual aids such as images. These aids enhance your understanding of the questions and ensure you grasp the material thoroughly. With this Oklahoma HazMat practice test, you are one step closer to securing your HazMat endorsement and advancing your career as a commercial driver. Start today and gain the confidence you need to ace your CDL HazMat test.
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Sample Oklahoma HazMat Test Questions

Question 1

What does an “I” in Column 1 of the Hazardous Materials Table indicate?

  1. A The material contains iodine
  2. B Transportation is prohibited outside the United States
  3. C The entry is a proper shipping name appropriate for international transportation
  4. D The material is classified as inflammable

Correct answer: C – The entry is a proper shipping name appropriate for international transportation

Federal hazardous-materials regulations use the letter “I” to identify a proper shipping name appropriate for describing the material in international transportation. When transportation is only domestic, an alternate proper shipping name may be selected. The symbol describes the use of the shipping name rather than the substance or its hazard class.

Source: Oklahoma Commercial Driver’s License Manual — § 9.3.3, “Lists of Regulated Products”, 49 CFR § 172.101(b)(5) — Purpose and use of hazardous materials table

Question 2

What is the main purpose of the Emergency Response Guidebook?

  1. A To provide commercial-vehicle driving instructions
  2. B To give initial-response guidance for hazardous-materials incidents
  3. C To establish designated hazardous-material routes
  4. D To replace hazardous-material shipping papers

Correct answer: B – To give initial-response guidance for hazardous-materials incidents

The Emergency Response Guidebook helps firefighters, police, and industry personnel protect themselves and the public during hazardous-materials incidents. It is indexed by proper shipping name and hazardous-material identification number. The Oklahoma manual explains that accurate shipping papers, identification numbers, labels, and placards help responders locate the correct information quickly.

Source: Oklahoma Commercial Driver’s License Manual — § 9.7.1, “Emergency Response Guidebook (ERG)”

Question 3

True or false: A required hazard label may be placed on a securely attached tag when a nonradioactive package is smaller than the label.

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

Federal labeling rules allow the required label on a securely affixed tag when a nonradioactive package is smaller than the label. The same method is permitted for cylinders and packages with irregular surfaces that cannot be satisfactorily labeled. The Oklahoma CDL manual also describes securely attached tags as an accepted labeling method.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 9.3.2, “Package Labels” ([oklahoma.gov](https://oklahoma.gov/content/dam/service-oklahoma/Documents/CDLDriverManual.pdf)), 49 CFR § 172.406(b) – Placement of labels ([govinfo.gov](https://www.govinfo.gov/content/pkg/CFR-2024-title49-vol2/pdf/CFR-2024-title49-vol2-sec172-406.pdf))

Question 4

What does a shipper’s certification confirm?

  1. A The document is a shipping order
  2. B The shipper holds a cargo license
  3. C The hazmat shipment was prepared according to applicable rules
  4. D The proper shipping name is printed in Roman type

Correct answer: C – The hazmat shipment was prepared according to applicable rules

A shipper’s certification is a signed statement that the material is properly classified, described, packaged, marked, labeled, and in proper condition for transportation. Federal rules generally require the certification on the shipping paper. Limited motor-carrier exceptions apply, including certain private-carrier shipments and non-waste material transported in a carrier-supplied cargo tank.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 9.3.6, “Shipper’s Certification” ([oklahoma.gov](https://oklahoma.gov/content/dam/service-oklahoma/Documents/CDLDriverManual.pdf)), 49 CFR § 172.204(a), (b)(1), (d) – Shipper’s certification ([ecfr.gov](https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-172/subpart-C/section-172.204))

Question 5

What is the standard shape of a hazardous-material package label?

  1. A A shape selected by the shipper
  2. B Triangle
  3. C Diamond, or square-on-point
  4. D Oval

Correct answer: C – Diamond, or square-on-point

Hazard warning labels are diamond-shaped, also described as square-on-point. Their colors, symbols, and class numbers communicate the material’s hazards. Federal specifications generally require each side of a standard hazard label to measure at least 100 millimeters, subject to authorized size exceptions for small packages.

Source: Commercial Driver’s License Manual – Modernized Testing System — § 9.3.2, “Package Labels” ([oklahoma.gov](https://oklahoma.gov/content/dam/service-oklahoma/Documents/CDLDriverManual.pdf)), 49 CFR § 172.407(c)(1) – Label specifications ([govinfo.gov](https://www.govinfo.gov/content/pkg/CFR-2024-title49-vol2/pdf/CFR-2024-title49-vol2-sec172-406.pdf))

Question 6

Which document must a driver keep while transporting Division 1.1, 1.2, or 1.3 explosives?

  1. A The carrier’s complete insurance policy
  2. B Personal health-insurance records
  3. C A copy of the written route plan
  4. D None of these documents

Correct answer: C – A copy of the written route plan

Federal rules require the carrier or its agent to prepare a written route plan and furnish a copy to the driver before operating with these explosives. The Oklahoma CDL manual directs the driver to keep the plan while transporting the load and to follow it. A driver may prepare the plan as the carrier’s agent when the trip begins away from the carrier’s terminal.

Source: Commercial Driver’s License Manual – Modernized Testing System — §§ 9.6.5, “Route Restrictions,” and 9.6.10, “Where to Keep Shipping Papers and Emergency Response Information” ([oklahoma.gov](https://oklahoma.gov/content/dam/service-oklahoma/Documents/CDLDriverManual.pdf)), 49 CFR § 397.67(d) – Motor carrier responsibility for routing ([govinfo.gov](https://www.govinfo.gov/content/pkg/CFR-2025-title49-vol5/pdf/CFR-2025-title49-vol5-sec397-67.pdf?utm_source=openai))

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