High Center of Gravity - ONLINE CDL SCHOOL

Practice free. No account needed.
Want your scores, test history, and progress in your driver dashboard? Create a free account or log in before starting to save your results.

High Center of Gravity

Build confidence with 10 original questions about High Center of Gravity. Review your answers and explanations after finishing.

Supplemental study practice. This is not a government licensing exam or ELDT certification, and does not replace hands-on training. Follow your state’s current handbook.

1 / 10

While stopping a partially loaded tank vehicle on a slippery road, what could happen if you brake too hard and steer quickly?

The brakes will automatically adjust

The vehicle will stop more quickly

The vehicle may roll over

The liquid will freeze

2 / 10

You are preparing to load a tank vehicle with a liquid that expands as it warms. What must you do to prevent problems during transit?

Fill the tank completely to prevent sloshing

Add ice to keep the liquid cool

Load only in the evening

Leave space at the top of the tank for expansion

3 / 10

You are driving a tank vehicle loaded with a liquid. As you approach a sharp curve on an off-ramp, what is the safest action to reduce the risk of rollover?

Slow down well below the posted speed before entering the curve

Brake hard while turning through the curve

Accelerate into the curve to maintain stability

Maintain the posted speed limit for the curve

4 / 10

You are preparing to drive a tank vehicle. What is one reason you must start, slow down, and stop very smoothly?

To keep the cab comfortable

To save fuel on long trips

To control the movement of liquid surge and prevent instability

To avoid damaging the tires

5 / 10

You are driving a tank vehicle with a high center of gravity. What is a key risk when making sharp turns?

The liquid will freeze

The brakes may fail

The tires may overinflate

The vehicle may roll over

6 / 10

While driving a tank vehicle with baffles, what effect do the baffles have on the liquid’s movement?

They prevent side-to-side surge

They make the tank heavier

They eliminate all liquid movement

They reduce forward and backward surge

7 / 10

You are inspecting your tank vehicle before a trip and notice a leak around a pipe connection. What should you do?

Drive slowly to your destination

Do not drive the vehicle until the leak is fixed

Tighten the pipe and continue driving

Cover the leak with tape and proceed

8 / 10

You are driving a smooth bore (un-baffled) tanker. What is a key risk you must manage when starting and stopping?

Overheating the engine

Excessive tire wear

Loss of air pressure

Strong forward-and-back liquid surge

9 / 10

You are driving a tank vehicle with several compartments separated by bulkheads. What is the most important consideration when loading these compartments?

Distribute the weight evenly among all compartments

Fill only the front compartment

Load the heaviest liquid in the rear compartment

Leave all compartments half empty

10 / 10

You are hauling a very dense liquid in your tank vehicle. What should you check before filling the tank?

That the tank has no baffles

That the loaded weight does not exceed legal limits

That the liquid is heated

That the tank is completely empty

Your score is

The average score is 0%

About the High Center of Gravity practice quiz

This practice quiz focuses on High Center of Gravity, listed under CDL Practice — Tank Vehicles. Use it to check what you understand, spot topics to revisit, and connect the material to safe, informed decisions on the road.

Before you begin

Keep your current CDL manual or course notes nearby. Read each prompt carefully and think through why an answer fits, especially when a question describes a vehicle, road, or workplace situation. Licensing rules and procedures can vary, so confirm requirements with current official materials for your state.

After you finish

Review any explanations shown with your results. Note unfamiliar terms or missed concepts, then revisit your manual or course notes before trying again. Use your score to guide study; understanding why an answer is correct matters more than the number alone.

Study note: These quizzes are independent study practice. They are not state licensing exams, official government materials, or ELDT certification, and they do not replace required training.

Explore CDL Tests to find more practice by subject.