Missouri DMV CDL General Knowledge Quick Practice Test 4

Missouri DMV CDL General Knowledge Quick Practice Test 4 For 2025

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 the low air pressure warning signal comes on, you should:

Continue driving, but have the brakes repaired within a week.
Pull over and inspect the brakes.
Phone a mechanic while driving.

2. When checking power steering hoses during a pre-trip inspection, you should look for:

Leaks.
Secure connections to the battery.
Extra hose pieces available for repairs.

3. 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.

4. To use the controlled braking method, you should:

Lock your wheels while braking.
Apply your brakes as firmly as possible without locking the wheels.
Slightly tap the brakes.

5. A serious traffic violation involves each of the following offenses, except:

Excessive speeding.
Littering.
Reckless driving.
Following too closely.

6. If approaching a vehicle with a distracted driver, you should:

Quickly pass the vehicle.
Maintain a safe distance from the vehicle.
Closely follow the vehicle.

7. To make it as safe as possible to leave a stop, you should park:

So that you must back up to leave your parking space.
So that you can pull forward to leave your parking space.
On the side of a roadway, not in a parking lot.
By backing into a parking space.

8. If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

Loose
Tight
Cracked
Bumpy

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