District of Columbia DMV CDL General Knowledge Quick Practice Test 2

District of Columbia DMV CDL General Knowledge Quick Practice Test 2 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 you’re driving and the ABS warning light comes on, it means:

The ABS is working properly.
The ABS has just been activated.
The ABS is not working properly.
The ABS needs to be activated.

2. Why should your mirrors be adjusted to show the road behind you as well as part of your vehicle?

Having only the road in the mirrors would likely make the driver carsick.
Having part of the truck in the mirrors serves as a point of reference.
It is illegal to have only the road in the mirrors.
The driver should be able to see the reflection of surrounding vehicles on the trailer.

3. When checking its automatic transmission fluid, the vehicle:

Should be placed on an incline.
Should be placed on a decline.
May have to be running.
Should be lifted with a jack.

4. Routine vehicle inspections should be done to ensure:

Safety.
Good gas mileage.
Comfort.

5. The application pressure gauge:

Shows how much air pressure is being applied to the brakes.
Shows the temperature of air being used in the braking system.
Shows the pressure of the air coming from the compressor.
Shows the number of times the brakes have been used.

6. If you are disqualified from driving:

Your employer will be notified by the state.
You must notify your employer within two business days.
You must notify your employer within a month.

7. If you plan to slow down, you can warn drivers behind you by:

Slamming on the brakes.
Tapping the brakes a few times and before braking.
Turning on one set of turn signals.

8. Roads are especially slippery when it first begins to rain because:

Water is always very slippery.
The fresh rain mixes with oil on the roadway.
The water has nowhere to go.

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