Free Delaware CDL Tanker Endorsement Test Practice Test
Realistic 25-question practice exam with instant feedback and score reports.
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About this practice exam
Free Delaware CDL Tanker Endorsement Test practice test with 25 realistic multiple-choice questions, instant grading, and explanations. Study with drill mode, category score reports, and a personalized review plan.
Exam format
- 25 multiple-choice practice questions
- Drill mode with instant feedback and explanations after each answer
Study tips
- Review the official exam content outline before your first practice run.
- Take the full practice exam once to establish a baseline score by category.
- Focus review on categories where you score below the passing threshold.
- Re-take missed questions in drill mode until you can explain each correct answer.
- Schedule the real exam only after consistent passing scores on practice tests.
Sample CDL Tanker Endorsement practice questions
Try a few representative questions below. Each includes the correct answer and a short explanation — the same style you'll see in the full practice test.
- Question 1Weight and Load Calculation
A tanker truck is carrying 5,000 gallons of a liquid with a specific gravity of 1.2. If the maximum allowable gross vehicle weight (GVW) for this vehicle configuration is 80,000 lbs, and the empty weight of the tanker truck is 30,000 lbs, what is the maximum weight of the liquid that can be safely transported?
- A.50,000 lbs
- B.41,667 lbs(Correct)
- C.75,000 lbs
- D.60,000 lbs
Explanation
The maximum weight of the liquid is calculated by subtracting the empty weight from the GVW: 80,000 lbs - 30,000 lbs = 50,000 lbs. The specific gravity of the liquid (1.2) affects the volume it occupies for a given weight, but the question asks for the maximum *weight* of the liquid, which is limited by the vehicle's GVW. Therefore, the maximum liquid weight is 50,000 lbs.
- Question 2Liquid Surge and Stability
When transporting liquids, the center of gravity is a critical factor. Which of the following actions would *increase* the risk of hazardous movement due to liquid surge (sloshing) in a partially filled tank?
- A.Accelerating rapidly from a stop on a level surface.(Correct)
- B.Braking gently and smoothly on a downhill grade.
- C.Driving at a constant, moderate speed on a straight road.
- D.Making a wide, gradual turn at a controlled speed.
Explanation
Rapid acceleration creates a strong forward force on the liquid, causing it to surge towards the rear of the tank. This surge can shift the center of gravity dramatically and suddenly, increasing instability and the risk of a rollover, especially during subsequent maneuvers.
- Question 3Hazardous Materials and Compatibility
You are inspecting a tanker carrying hazardous materials. The placarding on the vehicle indicates it is carrying UN1203 (Gasoline) and UN1993 (Flammable Liquid, N.O.S.). What is the primary safety concern regarding the presence of these two different materials in the same tanker, assuming it is a single compartment tanker?
- A.The increased risk of fire due to a higher overall flammability rating.
- B.The need for different emergency response procedures for each material.
- C.The risk of a chemical reaction between gasoline and the unspecified flammable liquid.(Correct)
- D.The potential for vapor cloud formation from the unspecified flammable liquid to ignite gasoline vapors.
Explanation
While all options present potential concerns, the most significant safety risk with mixed hazardous materials in a single compartment is the potential for an unintended chemical reaction. Gasoline (UN1203) and an unspecified flammable liquid (UN1993) could react dangerously, leading to increased pressure, heat, or even explosion.
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Frequently asked questions
How many questions are on this CDL Tanker Endorsement practice test?
This practice test includes 25 multiple-choice questions designed to mirror the format and difficulty of the real Delaware CDL Tanker Endorsement Test.
Is this CDL Tanker Endorsement practice test free?
Yes. You can start practicing for free. Create an account to save progress, track weak categories, and retake the exam.
Do I get explanations after each question?
Yes. In drill mode you see why the correct answer is right, why distractors are wrong, and practical examples where relevant.
How should I use this practice test to prepare?
Take the full exam under timed conditions, review missed questions by category, then focus study on your weakest sections before scheduling the real exam.
Does this replace official exam materials?
No. Use this as a supplement alongside official candidate information bulletins, textbooks, and hands-on experience required for your license or certification.
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