All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All Plans| 90-100 | => | 11% |
| 80-89 | => | 24% |
| 70-79 | => | 33% |
| 60-69 | => | 24% |
| <60% | => | 7% |
Oklahoma! Where the wind comes sweepin’ down the plain! If you’ve driven through the state’s gentle plains and prairies, the Ouachita and Ozark Mountains, or the narrow, unpaved, or low-maintenance roads in the rural areas, you’ve likely met the proud people of Oklahoma. Just like the many casts of the musical, Oklahoma’s landscape is diverse, offering challenges and opportunities to drivers who add the Hazardous Materials (Hazmat) endorsement to their Commercial Driver’s License (CDL). This is an amazing way to expand your job opportunities and increase your earning potential! Transporting cargo in Oklahoma comes with challenges, but the rewards offered in this career and the additional opportunities available with the Hazmat endorsement make it worth the effort.
To transport materials the U.S. government has deemed hazardous, you’ll need a Hazmat endorsement. In the Sooner State, hazardous materials transported include petroleum products, crude oil and natural gas, agricultural chemicals, industrial chemicals, and explosives. Some prominent organizations in Oklahoma, such as Devon Energy and Chesapeake Energy in Oklahoma City (oil and natural gas), ONEOK in Tulsa (natural gas), Phillips 66 in Bartlesville (oil refining and energy), Cargill and Simplot (agriculture and food processing), and Linde in Tulsa (distributor of gases and industrial chemicals) rely on Hazmat drivers for transport.
Federal Motor Carrier Safety Administration Provider
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Now that we’ve gotten your attention with the sheer number of opportunities unlocked with this endorsement, let’s look at how to obtain it. First, you must complete a mandatory fingerprinting and background check conducted by the Transportation Security Administration (TSA). The results can take weeks, so get that started and use the wait time to study and practice for the second step: the DPS knowledge test. This test covers federal regulations, substance handling, packaging, quantity limits, and transport configurations for hazardous materials. With a score of 80% on Oklahoma’s 30-question knowledge test, you will pass the test (Oklahoma CDL Handbook 2026).
Oklahoma can use more Hazmat drivers, so we’ve simplified the process for you with Oklahoma DPS Hazmat Endorsement practice tests that present only the information needed, present immediate feedback on wrong responses, and resemble what you will face on the official DPS test. Once you receive your TSA results and feel prepared, you’ll visit the DPS with the necessary documents, pay the fees, and pass the test.
Driver’s Ed is - nobody wants to set foot inside the DPS. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2026 OK Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DPS.
Driving-Tests.org is officially listed in the FMCSA Training Provider Registry (TPR) as an approved ELDT training provider.
You can verify our listing yourself at tpr.fmcsa.dot.gov - search for "Driving-Tests" in the Provider Name field, then click the "Online" tab.
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