Ohio DMV CDL General Knowledge Quick Practice Test 1

Ohio DMV CDL General Knowledge Quick Practice Test 1 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. When loading a trailer, it is important to:

Place as little weight as possible over the axles.
Place an appropriate amount of weight over the axles.
Not be concerned about how the weight is distributed.
Only place weight over the axles.

2. When using mirrors while driving, you should:

Look in the mirrors quickly.
Look in the mirrors for extended periods of time.
Use only the rearview mirror.
Use only the driver’s side mirror.

3. If you must drive in reverse, using driver's side backing:

Is always encouraged.
Is discouraged.
Is only recommended if it is raining.

4. When being approached by a vehicle using bright headlights while driving at night, you can avoid being blinded by the headlights by:

Wearing sunglasses.
Closing your eyes.
Glancing to the side of road.
Using your high beams.

5. What may happen if the exhaust system is not working properly?

Poisonous fumes may enter the cab.
Poisonous fumes may exit the rear of the muffler system.
It may prevent proper steering.
It may cause problems if the trailer is fully loaded.

6. Which of the following will not result in losing your CDL for at least one year for a first offense?

Driving a CMV with a minimum blood alcohol concentration (BAC) of 0.04 percent
Driving a CMV while under the influence of alcohol
Refusing to undergo blood alcohol testing
Committing a misdemeanor involving the use of a CMV

7. Which of the following is not a sign of a driver becoming tired?

Frequent blinking
Drifting from their lane
Feeling hungry

8. Radial and bias-ply tires:

Should be used together on all axles.
Should be used together, but only on the rear axle.
Should not be used together.

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