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CDL Tanker Endorsement N Practice Test

Pass the CDL Tanker Endorsement Test on your very first try! Take our FREE Practice Test for the ultimate test preparation. Our practice tests have 25 multiple choice questions straight from the handbook and give immediate feedback.

Questions number
Mistakes Allowed
Passing Score

DL Tanker Endorsement (N) Practice Test

Have you acquired your commercial driver's license (CDL) and are raring to venture into tanker truck driving? Well, to level up your career as a truck driver, you need the solid backing of a tanker endorsement on your CDL. This endorsement essentially authorizes you to safely transport loads containing large quantities of liquid or gas.

It is a requirement to have this endorsement on your CDL because ferrying large quantities of liquid demands extra skills and care. Lacking the required training and skills exposes you to more danger on the road. You can easily roll the tanker and cause a major accident.

Taking a tanker endorsement knowledge test instills in you the skills you need while marketing you as a responsible, dependable, and quality tank driver. As a result, you get more job offerings flooding your way.

Moreover, earning a tanker endorsement on your CDL is a way of expanding your load-carrying options. The more you haul, the higher your chances of landing projects that involve well-paying loads. This is also a way to build up your experience as a truck driver and ensure your future in the trucking industry is bright.

Before stepping out into the open road with your tanker, you'll need to know everything about a tanker endorsement. The best place to start is by thisĀ free tanker endorsement practice test. This ultimate test will safely and reliably prepare you for the real trucking experience.

What is a tanker endorsement practice test?

As the name states, this is simply an informal endorsement test designed to prepare you for the formal endorsement test and ensure you get everything right. To earn the tanker endorsement on your CDL, you only need to take a knowledge test.

Whether you hold a Class A, Class B, or Class C CDL, you must pass this test to earn your seat behind a tanker's wheel. The surest way to pass the actual test is to begin with a knowledge practice test. This practice test exposes you to the actual problems posed by transporting large volume liquid or gaseous cargos with the exemption of hazardous materials.

Where do I start?

For the ultimate test preparation, take our free knowledge practice tests that will prepare you for the real thing. Our Free CDL Practice Tests are specially crafted to assist you to pass your CDL Tanker Endorsement Test right from the onset.

These comprehensive and well-thought-out practice tests come packed with 25 multiple-choice questions that are drawn directly from the CDL handbook and provide instant feedback upon completion. The practice tests only allow you a maximum of 5 mistakes and 80% as the passing score.

Each of the questions is intuitively formulated to help you learn the material in the CDL Handbook in a simple and more applicable manner.

What do you need to know before you start?

First things first. Before even thinking about taking this test, you must possess a valid CDL in either of the vehicle classes. Next, set apart some time to prepare for your test through a free practice test. From there, you can schedule a test appointment and visit your local DMV office to take the actual Tanker Endorsement Knowledge Test. Typically, the test will comprise anywhere from 20 to 30 questions. If you pass, you are eligible to receive an N endorsement on your CDL.

If you are planning to haul attached tanks, portable tanks, filled cylinders, or intermediate bulk containers, you will be required to have a tanker endorsement on your CDL. Before running after the endorsement, however, you must make sure everything is right with your CDL by avoiding CDL restrictions.

Restrictions on your CDL will limit your tanker driving ambitions long before you even start. The most painful CDL restrictions you should watch out for before embarking on a tanker endorsement mission are the L, Z, and E restrictions.

To avoid the L restriction that prohibits you from driving a vehicle with a full air brake system, you must first pass the Air Brakes Knowledge Test. Afterwards, you must take the skills test on a vehicle with full air brakes. It also worth noting that earning the Z restriction on your CDL may hinder you from operating a tanker with a full air brake system. Luckily, you can avoid the restrictions. All you have to do is avoid undertaking your skills test in a vehicle with air over hydraulic brakes.

Lastly, since most modern tankers come with a manual transmission, avoiding the E restriction opens you up to more tank driving possibilities. So, ensure you take your skills test in a manual transmission vehicle only.

What's on the test?

Our knowledge practice tests mimic the questions you can expect to find on the real knowledge test. The test involves 25 multiple choice questions, 5 allowable mistakes, and an 80% pass mark. You must pass this test to receive the endorsement. Otherwise, you'll have to retake it.

Generally, the knowledge test covers a range of topics from tank vehicle inspection, safely hauling tankers, dealing with baffles and bulkheads, and other scenario questions on how to drive a tanker.

Who needs the test?

This test is a requirement for all truck drivers or CDL holders that intend to transport at least 1,000 gallons of liquid or gas cargo with the exemption of hazardous materials. The test instills the necessary training on tank drivers for the safe and effective hauling of liquid cargo. It can be applied to all license classes.

What must you have ready to take the test?

Before embarking on a tanker endorsement knowledge test, you must have the following things ready:

  • Proof of identity
  • Be of legal age
  • A valid Class A, Class B, or Class C CDL
  • Application and training fees (differ by state)
  • Valid US residential status

CDL Sample Test Questions

A baffled liquid tank _______.
  • Has nothing to slow down the flow of liquid.
  • Has bulkheads in them with holes that let the liquid flow through.
  • Has very confusing controls
  • Does not work effectively.
A tank should never be driven with ______.
  • New tires.
  • A full tank of gas.
  • Open valves.
  • Working brakes.
A trailer air supply that is in good working condition will pop out when the air pressure falls into what range?
  • 75-85 psi.
  • 20-45 psi.
  • 100-125 psi.
  • 65-90 psi.
  • 50-60 psi.
As you park your combination vehicle make sure to use the hand valve when?
  • Only on busy streets.
  • As you are backing up.
  • Never.
  • Mostly when you're parking on a downgrade.
How does liquid surge affect the handling of a tanker?
  • The surge lets you turn corners more easily.
  • The surge can move the tank in the direction the liquid waves move.
  • Liquid surge doesn't affect the handling of a tanker.
  • The surge can help the tank decelerate.


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