Iowa DMV CDL General Knowledge Quick Practice Test 1

Iowa DMV CDL General Knowledge Quick Practice Test 1 For 2023

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. During the vehicle inspection test, you will be asked to:

Change a tire.
Explain to the examiner what you would inspect and why.
Estimate the weight of a load in a trailer.
Change a windshield wiper.

2. A driver can have:

Two licenses, one for automobiles and one for trucks.
Only one license.
A license for each state in which they plan to drive.
An automobile license from one state and a CDL from another.

3. When taking the basic vehicle control skills test:

Points are deducted for each pull-up.
A driver is allowed three pull-ups per maneuver.
A pull-up will earn points only if the driver gets out of the vehicle before pulling up.
Only an excessive number of pull-ups will be counted as errors.

4. If you must back up, it is helpful to:

Drive as fast as possible to complete the maneuver quickly.
First walk the line of travel to look for obstacles.
Use only the passenger side mirror.

5. When driving, being aware of what is happening behind you is:

Not important.
Important.
Distracting.

6. If you are driving at a reduced speed in a construction zone when you spot a construction worker near the road, you should:

Speed up.
Stay at your current speed.
Further reduce your speed.

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

Loose.
Leaking.
Fastened securely.
Cracked.

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

The warning light will come on.
The vehicle will not shift out of gear.
The front lights will flash.
The steering wheel will lock up.

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