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Based on official Oklahoma exam questions

OK CDL Tanker Vehicles Endorsement Practice Test 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

Tanker drivers serve a variety of industries across multiple economic sectors and transport many essential products and services. By adding a tanker endorsement to your Oklahoma Commercial Driver’s License (CDL), you will expand your driving opportunities and become eligible for some exciting benefits. Tulsey Town has no shortage of employers in need of tanker drivers and offering such incentives as higher pay and job security. While these opportunities are readily available, you’ll need to learn the rules and regulations for operating these vehicles. There are various on-line resources you may use, but you should choose one capable of addressing your specific learning needs.

Our Oklahoma DPS CDL tanker endorsement practice test offers expertly designed instruction with an innovative approach you’ll find preferable to traditional study methods. You must be prepared to meet several requirements to obtain a tanker endorsement, including passing an official knowledge test. Using the practice test, you will gain the skills needed to effectively demonstrate your grasp of tanker operations and pass the official knowledge test on your first attempt. You’ll receive a real-time assessment of your current knowledge level and be directed to the information you need to better understand. It’s a winning game plan to help you correctly answer the required 80% of the 20 questions for passing the official knowledge test.

This Oklahoma DPS CDL tanker endorsement practice test outperforms alternative study methods that limit you to learning surface knowledge. The practice test is based on the most recent Oklahoma DPS CDL manual (Oklahoma CDL Handbook 2025) and is up to date as of November 2025. If you get a question wrong, the practice test provides you with information taken directly from the manual to correct your answer. Other on-line resources, such as study guides, do not provide this amount of detail to help you overcome your learning obstacles. Study guides train you to memorize the answers to the questions but will not help you correct an incorrect answer. This approach does not help you absorb the information and apply it to your driving practices. Study guides place the responsibility on you to seek the necessary information, slowing the learning process. In comparison, the practice test conveniently places the information you need to know at your fingertips. The practice test is the most effective and time-efficient study method you’ll find.

For an added bonus, you should consider adding a hazardous materials (HazMat) endorsement to your CDL. The Oil Capital of the World is one of many places with plentiful opportunities for drivers licensed to transport cargo deemed to be hazardous, such as flammable liquids and explosives. Our HazMat endorsement practice test is at https://driving-tests.org/oklahoma/ok-cdl-hazmat-practice-test/ and can help you learn the rules and regulations you must know.

You can two-step your way across the Skydance Bridge, but you’ll make it across faster by developing dynamic driving skills using the practice tests at https://driving-tests.org/oklahoma/.

10 min to complete
Available in EN and ES
OK commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to Oklahoma

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

Authored and curated by Steven Litvintchouk, M.S.

Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
Last verified for accuracy: November 2025 (reviewed weekly)

What to expect on the actual OK permit test

20

questions

16

correct answers to pass

80%

passing score

More OK CDL test resources

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