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Tank Vehicle Endorsement Practice Test 2

Last updated on May 4, 2023

Tank Vehicle Endorsement Practice Test 2 contains knowledge and safe driving information that all commercial drivers should know to successfully pass the CDL “Tanker Endorsement” written test.

CDL Tank Vehicle Endorsement Practice Test 2 Methods:

Number of practice test questions with answers: 20

Number of correctly answered practice test questions needed to pass: 16

Passing score: 80%

This CDL Tank Vehicle Endorsement Practice Test #2 with Answers is applicable for all 50 States.

Tank Vehicle Endorsement Practice Test #1

CDL Tank Vehicle Endorsement Practice Test #2 With Answers:



#1. A tank vehicle (N) endorsement is required for certain vehicles that transport liquids or gases. The liquid or gas:

#2. A cargo tank must be attended by a qualified person at all times when it is being loaded. The qualified person must be within _______ feet of the cargo tank while it is being loaded.

#3. The posted speed limit for a curve ________ for a tank vehicle.

#4. There are two (2) main reasons that special care is necessary when driving tank vehicles. One reason is the surging of the liquid, the other reason is:

#5. When filling a cargo tank with flammable liquids through an open filling hole, the cargo tank must be:

#6. You must stop before a railroad-highway crossing if your vehicle has cargo tanks, _____________, and is used for hazardous materials.

#7. Non-liquid-tight partitions that regulate fluid motion in a tank are called:

#8. Rollovers happen when:

#9. Each cargo tank with a capacity of 400 gallons or more must be accessible through a manhole at least _______ inches in diameter.

#10. When anticipating how much space you will need to stop your tank vehicle, wet roads will require _________ times the normal stopping distance.

#11. To control liquid surge when coming to a stop, keep steady pressure on the brakes, and:

#12. You must be extremely cautious when driving a smooth bore (un-baffled) tank vehicle, especially when:

#13. You must make sure that intake, discharge, and cut-off valves are __________ before loading, unloading, or moving a tank vehicle.

#14. How do you know if your cargo tank trailer is equipped with antilock brakes (ABS)?

#15. A fully loaded tank vehicle is ________ times more likely to roll over in a crash than an empty tank vehicle.

#16. When traveling under 40 mph while driving a tank vehicle, you should follow other vehicles:

#17. A driver transporting chlorine in cargo tanks must have an emergency kit for controlling ________ on the cargo tank.

#18. When a tank vehicle starts to skid, you must:

#19. Pressure-tight separators within a bulk liquid tank are called:

#20. Side-to-side liquid surge can cause:


Tank Vehicle Endorsement Practice Test #1


The pool of questions used to produce this practice test have been independently created by CDL Digest and come directly from Code of Federal Regulations (Title 49 – Transportation) and the information provided in AAMVA’s “2005 CDL Test System (July 2010 or newer Version) Model Commercial Driver Manual”.

These are the same sources that all 50 State Driver Licensing Agencies (SDLA) are required to use by federal regulation (49 C.F.R. 383.133) to develop the pool of questions for all written tests needed for a person to obtain a commercial learner’s permit (CLP), commercial driver’s license (CDL), and/or any federally authorized endorsements.

Note: The above listed source information is static, meaning changes to the information used to create the pool of questions that your State Driver Licensing Agency (SDLA) uses for the actual written test have been extremely rare over the decades. Due to the static nature of the source information, you may see practice test questions and answers in this practice test that are very similar, if not identical to the questions and answers on the actual written test. If this occurs, it is purely coincidental. CDL Digest is not affiliated with the AAMVA or any government agency.


The source material used by CDL Digest to develop these practice test questions is very technical. Relying solely on the practice tests we have produced will not be enough to successfully pass the actual written tests. You will NEED to study in order to successfully pass these practice tests and the actual written tests.

Class “A” Commercial Learner’s Permit Study Guide

Class “B” Commercial Learner’s Permit Study Guide

CDL Tank Vehicle Endorsement Study Guide

Complete CDL Study Guide

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