Illinois CDL General Knowledge Practice Test (IL) # 3

An all-new Illinois general knowledge test for a class B commercial drivers license! Pass the driving test in 2021!

  • 20 Questions
  • 80% Passing Score
  • 4 Mistakes Allowed
92% of students found this test helpful!
Rated 4.6 out of 5 by 25 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

Commercial learner drivers who ultimately want to earn their living driving mid-weight commercial vehicles such as school buses, single trucks or box trucks will need to pass their Class B DMV permit test. This Illinois SOS test focuses on CDL general knowledge topics which relate to all aspects of commercial driving, without being vehicle-specific. The Illinois DMV handbook details all the material you will need to have memorized in order to pass the DMV permit test. You can download a free copy of this commercial driving manual from the SOS website – go get yourself one if you haven’t already! You may also be thinking of using a CDL Class B practice test for Illinois to test how much you’ve learned from the handbook. If that’s the case, you’ve landed on the right website! This 2021 general knowledge CDL practice test can test you on what you’ve learned, help you to understand the DMV test questions better and give you a nice break from studying the DMV handbook.

What we’ve actually got here is a DMV practice permit test which can be used as both a Class A and Class B practice test for Illinois, whether you live in Chicago, Champaign, Evanston or Schaumburg. You read that right – this Illinois CDL practice test is suitable for all classes of commercial drivers license, no matter which part of Illinois you live in! How can this be possible? Let us explain. The DMV test in Illinois is the same from one corner of the state to another, and the subjects it covers relate to commercial driving in general – so they apply to every aspiring CDL applicant. The different classes only have different exams for the practical driving test and the endorsement tests. Some endorsement tests may be mandatory depending on your chosen class of commercial license.

For a Class B permit, you would need to use our Air Brakes endorsement DMV permit practice test, as nearly all Class B vehicles have air brakes, so you would need to know how to operate them safely. Class A applicants may also wish to use that practice test, as an Air Brake endorsement is compulsory for their chosen class too. We also have a DMV practice test Illinois quiz for all the other optional endorsement tests. Which of these CDL practice tests you end up taking should depend on which ones apply to the kind of vehicle or equipment you’d like to operate. You might need the DMV CDL practice test for Illinois that helps you prepare for a Passenger, School Bus, Tank or HazMat endorsement, but you’ve got plenty of time to figure that out later. The general knowledge DMV written test 2021 for Illinois comes first, so with regard to CDL practice tests – you should start here.

This DMV permit practice test uses genuine permit test questions but in a shorter-length format. We do have a full-length drivers permit practice test elsewhere on the website, but we advise you begin with this smaller, easy-to-digest DMV written practice test. We’ve used some fantastic images on the CDL practice test, as well as handy hints and study guidance to help you get through the test smoothly.

When you’ve reached the stage that you can score over 80 to 90 percent on this test every time, why not put your general knowledge to the test with one of our longer, free CDL practice tests such as the CDL general knowledge cheat sheet or permit test Simulator!