Iowa DMV CDL General Knowledge Quick Practice Test 1 For 2024

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.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. If confronted by an aggressive driver, you should:

2. After a tire has been changed, the driver should stop after a short distance to:

3. When checking the springs during a vehicle inspection, do all of the following, except:

4. You will often have to drive your vehicle under bridges and overpasses. If approaching such an opening, you should:

5. What should happen if the air pressure in the braking system's air tanks falls below 60 psi?

6. When are people usually the least alert?

7. When checking the exhaust system, it should be:

8. The front of an enclosed trailer should: