delaware
CDL Practice Test

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This site is available to practice and prepare to take the Delaware CDL test. These tests are free and you are able to take them as many times as you would like. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin. 

1 / 40

Why is the proper adjustment and use of all mirrors so vital to the safe operation of the school bus?

2 / 40

When arriving at the destination announce:

3 / 40

Water is drained from the compressed air tanks because:

4 / 40

Select the true statement in regards to a converter dolly:

5 / 40

You should____when an emergency requires you to quickly stop due to a crash.

6 / 40

If you are stopped on an incline, how can you start moving without rolling back?

7 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

8 / 40

Which trailer is most likely to tip over due to the crack the whip effect?

9 / 40

What gauge on the dashboard indicates electrical system charging rate?

10 / 40

This object should be clean with no obstructions, illegal stickers or damage to the glass.

11 / 40

To test the tractor-trailer connection for security, you should:

12 / 40

If your bus is equipped with an emergency exit door, it must:

13 / 40

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

14 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

15 / 40

What is the stopping distance for a tractor trailer that is traveling at 55 mph on dry pavement?

16 / 40

Most states require school bus drivers to take a physical examination:

17 / 40

Two causes of tire fires are ______.

18 / 40

When inspecting the ______you are making sure that the lines and hoses are not chafed, cut, pinched, or dragged against tractor parts.

19 / 40

If the hazardous materials are classified as FORBIDDEN you should:

20 / 40

You should turn off your engine when loading flammable liquid unless:

21 / 40

Which of the following are some suspension system defects?

22 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

23 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

24 / 40

Select the purpose of fanning air brakes:

25 / 40

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

26 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

27 / 40

What type fire extinguisher is required in the power unit of a placarded vehicle?

28 / 40

The blind spot behind the bus could extend to how many feet?

29 / 40

How should the pintle hook be when backing a dolly under the second trailer?

30 / 40

When driving in very hot temperatures, you should:

31 / 40

At a railroad crossing, the bus is required to stop at the stop line. If there is no clearly marked stop line, what is the required minimum and maximum stopping distance?

32 / 40

What do you need to do to supply air to the air tanks of the second trailer?

33 / 40

What is always required before loading, driving, or unloading a tanker?

34 / 40

What is NOT one of the four skill areas that operating a commercial vehicle requires?

35 / 40

Which of the following statements is true about speed management?

36 / 40

When should the trailer hand valve be used?

37 / 40

The designation RQ identifies the material's:

38 / 40

Which of the following is NOT a part of the steering system?

39 / 40

When backing, what is the best method to use to avoid blind spots?

40 / 40

Select the true statement about empty trucks:

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CDL Category Practice Tests

CDL Practice Test

How To Get A delaware Commercial Drivers License

Those who are 18 years of age and older can apply for their CDL. To receive privileges for out-of-state driving, doubles/triples, hazmat, and transporting vehicles, residents must be at least the legal age of 21 years old. All CDL applicants are required to comply with the MCSR 49 CFR 391.41 section of the Federal Codes regarding commercial driving medical requirements. Individuals must present a medical examiner’s certificate at the time of their CDL application.

Any of the following will automatically disqualify an applicant from receiving their CDL:

  • Having a revoked, suspended, canceled, or denied driver’s license.
  • Being convicted in the past 24 months of driving impaired in a commercial vehicle.
  • Having disqualified CDL privileges in another state.
  • Possessing more than one operator’s license.

All applicants are required to complete an on-site vision test, knowledge test(s), and a practical skills test. All tests must be successfully passed before a Delaware resident can be issued their CDL.

Endorsements
S – School Bus
X – Tank and Hazmat
T – Doubles and Triples
P – Passenger
N – Tank Vehicles
H – Hazardous Materials

Hit the Open Road

delaware CDL License Test Tips

Delaware residents must complete, at the minimum, one knowledge test to be considered eligible for a CDL. Depending on the Class and the Endorsements that are sought, individuals may have to undergo additional testing. All tests must be passed with a score of 80 percent or more. General knowledge tests for Class B and C drivers are 50 questions. Those seeking their Class A will have 50 general knowledge questions with an additional 20 questions about combination driving. Endorsements and the Air Brake Restriction Removal require additional knowledge tests that are between 20 and 30 questions each.Once an individual passes their knowledge test they are given a commercial learning permit (CLP). After waiting 14 days, the holder can take their skills test. This is a three part test that assesses the individual’s ability to operate a commercial motor vehicle. The test includes a pre-trip inspection, a driving test, and a basic controls test. All three parts must be successfully passed for the applicant to be eligible for their CDL. If applying for a special endorsement, the individual must take their test in the vehicle the endorsement is for.

Additional Information

Information on the Delaware Division of Motor Vehicles

The State of Delaware Division of Motor Vehicles provides oversight and administration for the CDL requirements and testing in Delaware. To get more information contact them via:

Website: https://www.dmv.de.gov/DriverServices/drivers_license/CDL/index.shtml

Phone:  302.326.5000

 

Additional Delaware CDL Helpful Links

Please use the links below to access more valuable Delaware CDL testing resources and to learn more about practice driving tests for the state of Delaware.