Free Illinois CDL Combination Vehicles Practice Test 2023

You have to pass the Illinois CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Illinois CDL Practice Test source for your coming CDL test? You are in the right place. Our practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our CDL practice test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Illinois CDL manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Illinois CDL Combination Vehicles Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 IL commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
IL CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
Before you back under a trailer, make sure that:
Which of the following is part of the electrical and air lines coupling inspection?
After supplying air to the trailer, how should you check for crossed air lines?
One good way to prevent rollover is:
The iron trailer supports are up and the trailer is resting on the tractor. Make sure:
After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by:
When you are uncoupling a loaded trailer, you should lower the landing gear until it:
When should you use the hand valve to park a combination vehicle?
To stop other drivers from passing you on the right when turning wide:
Trailers will have an ABS malfunction lamp:
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
To stop a trailer skid you should:
At the back of trailer used to tow other trailers are shut-off valves, also called:
Triples combinations have a rearward amplification of:
Glad hands are usually connecting which of these?
Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
You are coupling a tractor to the semitrailer; you have connected the airlines. Before backing under the trailer, you should:
If you cannot complete your turn without entering another traffic lane you should:
The front trailer supports are up and the trailer is resting on the tractor. Make sure:
While checking if the trailer is securely coupled to the tractor, the landing gears should be: