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
1.
To prevent moisture from entering the electrical cable when disconnected:
2.
Semi-trailers made before 1975 that are equipped with air brakes:
3.
You should not back a tractor under a trailer until the air system is:
4.
When inspecting the coupling area, all of the following are required except:
5.
The higher the center of gravity of your truck, the:
6.
If your trailer goes into a skid, you should do all of the following except:
7.
You have coupled with a semitrailer, where should you put the iron trailer supports before driving away?
8.
When connecting the glad hands, press the two seals with the couplers together at what degree to each other?
9.
To help prevent rollover, keep the center of gravity of the load as low as possible, and:
10.
Rearward amplification is a major cause of:
11.
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
12.
The emergency air line controls the emergency brakes on combination vehicles, and:
13.
The trailer hand valve should be used:
14.
When checking the trailer emergency brakes, the tractor protection control valve should be placed in what position?
15.
Trailer landing gear:
16.
Crack-the-whip effect occurs when:
17.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
18.
The "rearward amplification" value means:
19.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
20.
Air and electrical lines from the tractor to the trailer should be: