Illinois CDL Class A, B or C DMV Practice Tests & Cheat Sheets

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

99.5% Pass Rate

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

Is not a cause for concern.
Is not a concern if passengers are not unloading.
Should not be on the roadway.
Is a concern, whether passengers are visible or not.

There is a decreased risk of jackknifing.
There is an increased risk of jackknifing.
The brakes will not work as effectively as they would without ABS.
The brakes will become more sensitive.

20,000 pounds
30,000 pounds
50,000 pounds
80,000 pounds

Illinois DMV CDL General Knowledge Quick Practice Test 4

Illinois DMV CDL General Knowledge Quick Practice Test 4 For 2024

99.5% Pass Rate

Improves reaction time.
Impairs depth perception.
Improves night vision.

Ice that is dry
Ice that is wet
Wet pavement

1/32 of an inch
2/32 of an inch
4/32 of an inch

When changing lanes.
When making a turn.
To determine how fast you are traveling.