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Tanker Endorsement CDL Practice Test Part B

CDL Test Practice Exams & CDL Training Materials

Taking the CDL test will be much easier after going through our practice CDL tests here online. This is the Tanker Endorsement portion of the CDL written practice exam. These questions are very similar to the ones you'll find on the actual CDL written test you'll be taking to get your CDL license. Follow along with the test questions below and read through the explanations that follow each CDL test question to get some better insights into the CDL exam and the trucking industry itself.

1. When the tanks are partially filled, the movement of the liquid is called...

A. Surging
B. Waves
C. Splashing
D. Rocking


Answer

A. Surging

The liquid "surges" toward the front or the rear of the trailer during acceleration and braking. It surges side to side around turns.

2. Hauling tank vehicles requires special skills because...

A. The center of gravity is higher
B. The vehicle is top heavy
C. The load's weight is high up off the road
D. All of the above


Answer

D. All of the above

Hauling a tanker is far different than dry freight. The liquid moves around a lot and there are a lot of things you need to be aware of when it comes to the different liquids you'll be hauling - especially if you're hauling chemicals.

3. Dividers inside tankers that have openings at the top and bottom are called...

A. bulkheads
B. baffles
C. waffles
D. barriers


Answer

B. baffles

Baffles keep the liquid from sloshing as badly as it would in a smooth bore tanker which has no baffles. Food grade tankers can not have baffles by law - they are too hard to clean and could cause contamination.

4. Baffles in a tanker...

A. make the tanker easier to clean out
B. control forward and backward liquid surge
C. allow you to haul mixed loads
D. eliminate side to side surge


Answer

B. control forward and backward liquid surge

Remember, baffles do not control side to side surge, only front to back.

5. The driver should pay particular attention to the _________ on smaller tanks.

A. Higher center of gravity
B. Weight distribution
C. Level of fluid
D. All of the above


Answer

D. All of the above

Again, there's a lot to know about tankers that are different than dry material hauling.

6. A tank trailer with baffles helps to control...

A. Side to side flow
B. Weight distribution
C. Movement from front to back
D. Total vehicle weight


Answer

C. Movement from front to back

Baffles do not control side to side surge or weight distribution

7. The reason a tank trailer should not be loaded completely full is because...

A. Your load may shift more
B. The baffles won't be as effective
C. Liquid expands and can leak out of the trailer
D. The movement is stronger


Answer

C. Liquid expands and can leak out of the trailer

This is not a mistake you want to make!

8. A tank vehicle is defined as a vehicle which transports...

A. Liquid
B. Liquified gas
C. Bulk fertilizer
D. Both A and B above


Answer

D. Both A and B above

The reason it is not C is because it is naming a specific product, not a type of product.

9. When a bulk tank vehicle is stopping at an intersection which has a slippery surface...

A. The truck could slide into oncoming traffic
B. The liquid movement could push the truck into the intersection
C. The liquid could leak onto the roadway
D. The truck could slide sideways due to rocking


Answer

B. The liquid movement could push the truck into the intersection

You have to be careful of that surge under braking and when going through turns and curves!

10. Retest markings...

A. must be stamped on the tank itself
B. give the date of the last retest
C. show what type of test or inspection was performed
D. all of the above


Answer

C. show what type of test or inspection was performed



11. Hauling liquids in tankers requires special care for two reasons. One reason is the ____ center of gravity that tankers have.

A. Wide
B. Flat
C. Low
D. High


Answer

D. High

A high center of gravity makes the truck more likely to tip over.

12. You need to be extremely cautious when driving smooth bore tankers. This is especially true when you are:

A. Loading or unloading
B. Starting or stopping
C. Hauling milk or other food products
D. All of the above


Answer

B. Starting or stopping

The liquid really surges from front to back in a smooth bore tanker - meaning the tanker has no baffles in it.

13. The best way to take a curve with a tanker is to slow to a safe speed before entering the curve, then ____ as you go through it.

A. Downshift twice
B. Accelerate slightly
C. Brake lightly
D. All of the above


Answer

B. Accelerate slightly

Accelerating slightly will keep the liquid more stable, put more weight to your drive tires, and help prevent a tractor jacknife from the liquid pushing the drive tires of the tractor out to the outside of the curve.

14. You should know the outage needed for the liquids you carry because:

A. Some liquids expand more than others when they get warm
B. Tank baffles are not always legal with outage
C. Some of the heaviest liquids do not need any
D. All of the above


Answer

A. Some liquids expand more than others when they get warm

You do not want to overflow the tanker!

15. Baffles in liquid cargo tanks do not usually prevent the movement of surge from:

A. Front to back
B. Top to bottom
C. Side to side
D. All of the above


Answer

C. Side to side

Remember, baffles only control front to back surge.

CDL Practice Tests

More CDL Training Resources From TruckingTruth

High Road Practice Questions

We've taken the questions from the High Road Training Program and put them in their own section of the site. The quizzes also contain quotes from the CDL manual and advice from TruckingTruth.

CDL Practice Test Android App

We've also converted the quizzes from the High Road Training Program into an Android app. Now you can practice taking the quizzes when you're on the go! The quizzes also contain quotes from the CDL manual and advice from TruckingTruth.

Tips On Passing The CDL Exam

Passing your CDL exam involves taking written exams, oral exams, and of course driving and backing tests. We have a series of articles that will help you understand what you're being tested for and how to give yourself the best chance of passing.

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