Free Illinois CDL Combination Vehicles Practice Test 2022

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 2022 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
Air brake equipped trailers made before 1975:
When a vehicle goes around a corner, the rear wheels follow a different path than the front. This is called:
A tractor with a _______ trailer, requires the most amount of stopping distance.
The shut-off valves at the back of the last trailer should be:
Supplied by the service line from the tractor, each trailer or dolly has its own:
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
Before coupling or uncoupling, the trailer wheels should always be:
When coupling, trailer height should:
When pulling trailers:
There are two things that a driver can do to prevent a rollover. They are: (1) go slow around turns, and (2):
Which of these statements is true?
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
When uncoupling, the tractor should:
The emergency air line is usually what color?
A fifth wheel in proper position for coupling will have:
You supply air to the trailer tanks by:
All of these are part of the final 3 steps of uncoupling the trailer except:
When backing under the trailer, do all of the following except:
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
A specific item to check on a sliding fifth wheel is: