Illinois CDL Tanker Practice Test (IL) 2021

Don't stress over the Illinois CDL test - pass easily with the help of this free tanker practice test! Based on the 2021 driving book!

  • 20 Questions
  • 80% Passing Score
  • 4 Mistakes Allowed
88% of students found this test helpful!
Rated 4.4 out of 5 by 10 drivers

Illinois CDL Test Facts

  • Questions: 50
  • Correct answers to pass: 40
  • Passing score: 80%
  • Test locations: Secretary of State (SOS) Offices
  • Test languages: English, Spanish
  • Based upon: Illinois CDL Book
Improve your chances of passing the test by reading the official Illinois drivers manual Drivers Manual

If you are studying for the Illinois CDL tanker test and would like to find out how much progress you have made with the permit book, you’re in the right place! This Illinois tanker endorsement practice test is designed to help you measure your knowledge and gauge your chances of passing the N endorsement SOS written test, by presenting you with a series of authentic permit test questions. There is no denying that the permit test study guide is more important that any other study aid targeting the commercial driver license DMV permit tests; it represents the only official and complete source of study material for every DMV written test available. All serious Illinois tanker vehicle endorsement applicants must read the Tank Vehicles section of the manual in its entirety, at least a couple of times. However, reading the study guide does not guarantee that you have understood and absorbed the information well-enough to score a passing grade on the assessment. The only way to achieve this is by putting your new knowledge to the test, with some real CDL tanker test questions and answers for Illinois drivers – like those we have included on this 2021 tanker practice test!

So, what kind of topics will you need to study for your tank test in Illinois? Everything is broken down using reader-friendly language and helpful pictures in the Illinois CDL tanker study guide section of the driver’s manual. Don’t worry if you haven’t got your copy just yet, as you can download a free digital version right now from the DMV website or here on As we have imposed no restrictions on the number of times a student can use this Illinois tanker practice test, there is nothing stopping you from firing up the quiz right away just to get a look at some questions before you begin learning from the driver’s manual. Just like the real-life tank vehicles test, this Illinois DMV CDL practice test features questions on vehicle inspection, managing liquid surges and your vehicle’s high center of gravity, understanding the weights of different liquids and how much you can carry, emergency procedures and checking for leaks. It should take you around five minutes to work through every multiple-choice question on our driving license practice test for Illinois N endorsement applicants, making it easy to fit in more learning time at any point in the day.

Whether you intend to sit your permit test in Chicago, Rockford, Champaign or elsewhere in the state, this Illinois CDL practice test contains the appropriate material. There are some differences in the content and marking criteria of the DMV written test across different states, though every DMV test office in Illinois issues exams referencing the same pool of material. As tank vehicles are generally medium-weight Class B or heavy-weight Class A, you will need some additional qualifications to accompany your Illinois tanker permit before you can begin learning to drive. The Air Brakes endorsement is mandatory for all Class B and Class A commercial drivers, while the Combination Vehicles endorsement is a necessity for Class A. You may also find that you require a hazmat endorsement, should you be required to transport any potentially harmful liquids. Thankfully you will not have to go elsewhere to find study aids for these exams, as we have a top-quality practice CDL test for Illinois drivers that targets each of them here on

Once you have passed the initial CDL general knowledge exam with the help of our  DMV general knowledge practice test, you can get stuck into the Illinois DMV tanker practice test. Good luck!