Texas Tanker Endorsement Test (TX) 2026

4.8 out of 5 (732 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Howdy, future tanker drivers! If you're gearing up to earn your tanker endorsement in Texas, you've come to the right place. Our Texas CDL tanker practice test is just what you need to get a head start. This permit practice test is crafted by professional driving instructors with decades of combined experience. They've helped thousands of drivers like you hit the road safely and confidently. This Texas DMV practice test includes 20 multiple-choice questions that cover all the essential topics. From understanding liquid surge and its impact on vehicle stability to mastering weight distribution and emergency protocols, you'll find it all here. Regulatory compliance and thorough vehicle inspections are also key areas we focus on, ensuring you have a comprehensive understanding of what it takes to drive a tanker vehicle safely. One of the biggest challenges in driving a tanker is managing the "liquid surge" effect. This Texas tanker endorsement practice test will help you understand how to handle this unique challenge and maintain control of your vehicle. We also stress the importance of regular specialized inspections to keep your tank and vehicle components in tip-top shape. What makes our Texas permit practice test stand out? It's not just the high-quality questions, but also the helpful study aids. If you get stuck on a tough question, you can request a hint to guide you to the right answer. And if you happen to answer a question incorrectly, don't worry. We provide detailed explanations for the correct answers, helping you learn and improve. Taking this Texas CDL practice test multiple times will help you identify and eliminate any gaps in your knowledge. It's designed to be a focused, efficient way to boost your confidence and readiness for the real thing. Whether you're holding a commercial driver's license or a commercial learner's permit, this Texas tanker endorsement test is an essential part of your preparation. So, buckle up and get ready to ace your tanker endorsement in 2026! Let's hit the road to success together!
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Sample Texas Tanker Test Questions

Question 1

What should a tank vehicle driver remember about the posted speed for a curve?

  1. A It may still be too fast for a tank vehicle
  2. B It guarantees that every tank vehicle can take the curve safely
  3. C It matters only when the tank is empty
  4. D It can be ignored when the tank has baffles

Correct answer: A – It may still be too fast for a tank vehicle

A tank vehicle may need to travel below the posted curve speed because of its high center of gravity and the movement of liquid cargo. The Texas handbook advises slowing before the curve and accelerating slightly through it. Abrupt braking or steering in the curve can further increase the danger of a skid or rollover.

Source: Texas Commercial Motor Vehicle Drivers Handbook — § 8.3.3, “Curves”

Question 2

Which condition is a recognized fire hazard when operating a tank vehicle?

  1. A Properly secured cargo
  2. B A loose fuel connection
  3. C Correctly inflated tires
  4. D A fully charged fire extinguisher

Correct answer: B – A loose fuel connection

Loose fuel connections are a recognized cause of vehicle fires. A complete inspection should include the fuel, electrical, and exhaust systems, along with the tires and cargo. Drivers should also check instruments for overheating and use their mirrors to watch for smoke or other warning signs while traveling.

Source: Texas Commercial Motor Vehicle Drivers Handbook — §§ 2.21.1–2.21.2, “Causes of Fire” and “Fire Prevention”

Question 3

Bulkheads make weight distribution unimportant when loading or unloading a compartmented liquid tank.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

Bulkheads divide some liquid tanks into smaller compartments, but they do not eliminate weight-distribution concerns. The driver must pay close attention when loading and unloading individual compartments. Too much weight concentrated at the front or rear can create improper axle loading and unsafe handling.

Source: Texas Commercial Motor Vehicle Drivers Handbook — § 8.2.3, “Bulkheads”

Question 4

A cargo tank should be filled completely to eliminate liquid surge.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

A cargo tank must not be filled completely because liquids expand as they warm. The required expansion space is called outage. The proper loading amount depends on the liquid’s expected expansion, its weight, and applicable legal weight limits, not solely on an attempt to eliminate surge.

Source: Texas Commercial Motor Vehicle Drivers Handbook — §§ 8.2.6–8.2.7, “Outage” and “How Much to Load?”

Question 5

What is the empty space left in a cargo tank to allow liquid to expand called?

  1. A Surge
  2. B Baffle space
  3. C Smooth bore
  4. D Outage

Correct answer: D – Outage

Outage is the space left in a tank for liquid to expand as it warms. Different liquids expand by different amounts, making the required outage dependent on the cargo. The Texas handbook directs drivers hauling bulk liquids to know the applicable outage requirement before loading.

Source: Texas Commercial Motor Vehicle Drivers Handbook — § 8.2.6, “Outage”

Question 6

To control liquid surge while stopping, maintain steady brake pressure and avoid releasing the brakes too soon.

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

Steady brake pressure helps control the forward and backward movement of liquid cargo during a stop. Releasing the brakes too early can allow the surge to push the vehicle farther forward. Tank drivers should begin braking well in advance and maintain additional following distance to allow smoother stops.

Source: Texas Commercial Motor Vehicle Drivers Handbook — § 8.3.2, “Controlling Surge”

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