Mississippi Tanker Endorsement Test (MS) 2026

4.8 out of 5 (63 votes)
80% Passing score
20 Questions
4 Mistakes allowed
If you're gearing up to secure your tanker endorsement in Mississippi, the MS CDL tanker endorsement test is your best starting point. This Mississippi practice permit test comprises 20 meticulously crafted questions that dive deep into essential topics like liquid surge, weight distribution, emergency protocols, regulatory compliance, and thorough vehicle inspections. Each question mirrors the content found in the official state driver's manual, ensuring you're studying the most relevant and accurate information. The Mississippi DMV practice test is designed to give you a comprehensive evaluation of your knowledge, preparing you effectively for the real test. You'll find that the Mississippi CDL tanker practice test tackles the unique challenges faced by tanker vehicle operators, particularly focusing on the liquid surge effect. This phenomenon significantly impacts vehicle stability and handling, and understanding it is crucial for safe driving. The test also places a strong emphasis on regular, specialized inspections, ensuring both the tank and the vehicle components remain in optimal condition for your safety and compliance with regulations. To pass the Mississippi CDL tanker practice test, you need to answer at least 16 out of 20 questions correctly. Don't worry if you don't get it right on your first try; you can retake the MS permit practice test as many times as needed. This repetition helps build confidence and ensures you're comfortable with the material before moving on to the next set of CDL practice tests available on our site. Remember, this Mississippi CDL tanker practice test is specifically tailored to the tanker endorsement, making sure all the questions are directly relevant to what you'll face on the actual test. However, obtaining your commercial driver's license doesn't stop here. You'll also need to pass the general knowledge test. If you need additional preparation, we offer a variety of general knowledge prep tests to help you succeed. Start your preparation today with the Mississippi CDL tanker practice test and move one step closer to securing your tanker endorsement. With thorough study and repeated practice, you'll be well-prepared to handle the real test confidently.
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Sample Mississippi Tanker Test Questions

Question 1

What makes a liquid tank vehicle particularly vulnerable to rollover?

  1. A Its larger tire diameter
  2. B Its wheelbase alone
  3. C Its high center of gravity combined with liquid movement
  4. D Its required emergency equipment

Correct answer: C – Its high center of gravity combined with liquid movement

Liquid tank vehicles carry much of their load high above the road, making them top-heavy and easier to roll over. Moving liquid creates surge that can further affect handling, particularly during turns, lane changes, braking, or acceleration. The Mississippi CDL manual instructs tanker drivers to operate smoothly because of both conditions.

Source: Mississippi Commercial Driver’s License Manual — § 8.2.1, “High Center of Gravity”, Mississippi Commercial Driver’s License Manual — § 8.2.2, “Danger of Surge”

Question 2

Which commercial motor vehicle meets the CDL definition of a tank vehicle?

  1. A A CMV designed to carry liquid or gas in attached tanks, each over 119 gallons, with a combined rated capacity of at least 1,000 gallons
  2. B Any pickup carrying one portable 100-gallon tank
  3. C Only an unbaffled tank semitrailer carrying hazardous material
  4. D Any CMV carrying bottled liquids as packaged freight

Correct answer: A – A CMV designed to carry liquid or gas in attached tanks, each over 119 gallons, with a combined rated capacity of at least 1,000 gallons

Federal CDL regulations define a tank vehicle by its design, tank capacity, and attachment to the vehicle or chassis. Each qualifying tank must have a rated capacity greater than 119 gallons, and the aggregate rated capacity must be at least 1,000 gallons. The tanks may be permanently or temporarily attached, and the material may be liquid or gaseous.

Source: Mississippi Commercial Driver’s License Manual — § 8, “Tank Vehicles”, 49 CFR § 383.5 – Definitions

Question 3

During a stop, what can happen when a wave of liquid strikes the end of a tank?

  1. A It produces noise but cannot affect the vehicle
  2. B It pushes the vehicle in the direction the liquid is moving
  3. C It automatically increases steering traction
  4. D It shortens the vehicle’s stopping distance

Correct answer: B – It pushes the vehicle in the direction the liquid is moving

Liquid in a partially filled tank can surge back and forth during a stop. When the moving wave strikes the end of the tank, it tends to push the vehicle in the same direction as the wave. On a slippery surface, this force may even move a stopped tank vehicle into an intersection.

Source: Mississippi Commercial Driver’s License Manual — § 8.2.2, “Danger of Surge”

Question 4

Which condition is a recognized cause of a commercial-vehicle fire?

  1. A Tires inflated to the manufacturer’s specified pressure
  2. B Using the correct extinguisher for an electrical fire
  3. C Properly secured and ventilated cargo
  4. D Loose fuel connections

Correct answer: D – Loose fuel connections

Loose fuel connections are among the fuel-system conditions that can cause a vehicle fire. Other listed causes include improper fueling, smoking near fuel, damaged electrical insulation, loose electrical connections, underinflated tires, and improperly loaded flammable cargo. A complete inspection should include the fuel, electrical, and exhaust systems, tires, cargo, and fire extinguisher.

Source: Mississippi Commercial Driver’s License Manual — § 2.21.1, “Causes of Fire”, Mississippi Commercial Driver’s License Manual — § 2.21.2, “Fire Prevention”

Question 5

Tests have shown that a liquid tanker may roll over at what speed?

  1. A The posted speed limit for a curve
  2. B Only at speeds above the maximum highway limit
  3. C Only at the minimum speed needed to merge
  4. D The recommended speed for a straight roadway

Correct answer: A – The posted speed limit for a curve

The Mississippi CDL manual warns that tankers can overturn even while traveling at the posted speed limit for a curve. Their high center of gravity makes them especially vulnerable to rollover. Take highway curves, entrance ramps, and exit ramps well below posted curve speeds, slowing before entering the curve.

Source: Mississippi Commercial Driver’s License Manual — § 8.2.1, “High Center of Gravity”, Mississippi Commercial Driver’s License Manual — § 8.3.3, “Curves”

Question 6

What is the most important condition to check for when inspecting any tank vehicle?

  1. A A recently washed tank exterior
  2. B Leaks
  3. C Matching tire brands
  4. D A full fuel tank

Correct answer: B – Leaks

The Mississippi CDL manual identifies leaks as the most important inspection item on every tank vehicle. Check the tank body, valves, pipes, connections, hoses, manhole covers, and vents for leakage or improper closure. A vehicle must not carry liquid or gas in a leaking tank.

Source: Mississippi Commercial Driver’s License Manual — § 8.1.1, “Leaks”

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