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Based on official California exam questions

CA CDL Tanker Vehicles Endorsement Practice Test 2025

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

It’s hard to imagine experiencing the freedom of the open road in a better way than with the opportunities permitted by your California Commercial Driver’s License (CDL). However, if you want to increase your earning potential in the Golden State, you should get a CDL tanker endorsement, which will allow you to carry additional types of cargo. CDL tanker drivers provide essential transportation services to a range of industries, including agriculture and water treatment facilities. These opportunities are just the beginning, and they’re waiting for you to get the training to claim them.

Before obtaining your CDL tanker endorsement, you must demonstrate your knowledge of the road rules and safe driving practices needed to operate these vehicles. Successful applicants must answer 80% of the 20 knowledge test questions correctly to receive a passing score. Passing the knowledge test is your springboard to better job opportunities. You can expand those opportunities even further by getting a Hazardous Materials (HazMat) endorsement that allows you to carry cargo requiring more stringent transportation standards, such as petroleum products and explosives.

Our free California DMV CDL tanker endorsement practice test is expertly designed to help you pass the official knowledge test soon. You’ll find it contains reliable information to rapidly advance your knowledge. The practice test is based on the most recent California DMV CDL manual (California CDL Handbook 2025) and is up to date as of October 2025. The practice test provides more comprehensive instruction than other on-line resources, including study guides. It uses 20 multiple-choice questions, similar to those on the official knowledge test, to assess your current proficiency level. Unlike study guides, the practice test provides you with the information necessary to correct any wrong answers you submit. It allows you to learn at your own pace without worrying about a testing time limit and experience a stress-free learning environment. This approach will equip you with the skills needed to pass the official knowledge test on your first attempt.

You might not hit the high notes singing “Hooray for Hollywood,” but you’ll be the star of the show with the extraordinary driving skills you’ll obtain by using the practice tests at https://driving-tests.org/california/.

10 min to complete
Available in EN and ES
CA 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 California

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: October 2025 (reviewed weekly)

What to expect on the actual CA permit test

20

questions

16

correct answers to pass

80%

passing score

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