kentucky
CDL Practice Test

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Welcome to the site for practicing questions on the Kentucky CDL test. The site is free and you are able to take the practice test as many times as you need to. Questions are from the KY CDL Manual and cover items such as Air Brakes, Double/Triple Trailers, Hazardous Materials, and School Busses. 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

A trailer is at the right height to have the tractor backed up to it when:

2 / 40

Select the statement that is true in regards to quick steering movements and triple/double trailers:

3 / 40

Air pressure loss in a vehicle with a fully charged air system should be less than_______after the initial drop and brake applied.

4 / 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?

5 / 40

When would you lock some emergency roof hatches in a partly open position?

6 / 40

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

7 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

8 / 40

At the end of each shift you should:

9 / 40

The correct trailer height when coupling the rear trailer is:

10 / 40

Which of the following is NOT an appropriate reason to flash your braking lights?

11 / 40

If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?

12 / 40

You should check the_____when loading small tanks equipped with bulkheads.

13 / 40

Double and triple trailers should be driven with care to avoid a rollover or jacknife.

14 / 40

What does the amount of liquid you can carry depend on?

15 / 40

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

16 / 40

How do you release the dolly brakes when coupling twin trailers?

17 / 40

You should___to reduce the air leakage rate.

18 / 40

Where should you place your warning devices if you must stop on a one-way or divided highway?

19 / 40

The air leakage rate for combination vehicles should not be more than _ psi a minute.

20 / 40

Cargo tanks ____.

21 / 40

The best way to go into a curve is to decrease your speed going into the curve and then ____going through it.

22 / 40

The safety valve is usually set to open at:

23 / 40

Select how brakes work on long, steep downgrades:

24 / 40

When should you avoid using the parking brake?

25 / 40

The brake pushrod should not move more than____for manual slack adjusters.

26 / 40

____is the most common type of foundation brakes used by heavy vehicles.

27 / 40

On the Hazardous Materials Table, column 1 shows:

28 / 40

Never refuel your bus:

29 / 40

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

30 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

31 / 40

Select the true statement:

32 / 40

What will happen right away should the service air line come apart but the emergency line is intact while driving a combination vehicle?

33 / 40

When should you drain air tanks that do not have an automatic tank drain?

34 / 40

Who is responsible for packaging, labeling, and preparing the hazardous material shipping papers for a common carrier?

35 / 40

This object should be free of shiny treads, rust, free of cracks and distortions.

36 / 40

You downshift automatic transmissions ______.

37 / 40

The parking brakes should be used____in air brake vehicles.

38 / 40

The crack-the-whip effect is more likely to cause the front trailer to tip over.

39 / 40

The most important hand signal you should agree on with a helper is:

40 / 40

Select the true statement about dual air brake systems:

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CDL Category Practice Tests

CDL Practice Test

How To Get A kentucky Commercial Drivers License

All applicants must possess a valid Kentucky Class D driver’s license and meet all the below requirements to be eligible for their CDL. Applicants who are age 18 may apply for their CDL license. These drivers are restricted to in-state driving, may not operate school buses, or haul hazardous materials. Applicants must be 21 years of age or older to drive out-of-state and receive their School Bus and/or Hazardous Materials Endorsement(s). All drivers applying for their commercial driver’s license must provide the Division of Driver Licensing with a valid DOT medical card.

Drivers who fall into the below categories are disqualified from receiving their CDL:

  • Having more than one driver’s license.
  • Current license is suspended or revoked.
  • Being convicted of driving under the influence of alcohol within 24 months of submitting an application.
  • Being convicted of two or more serious moving violations within a 36 month period.

All CDL applicants are required to complete both knowledge tests as well as a practical skills test.

Endorsements
T – Double/ Triples
P – Passenger
N – Tank
H – Hazardous Materials
S- School Bus

Hit the Open Road

kentucky CDL License Test Tips

General knowledge tests for Class B and C driver applicants are comprised of 50 questions. Those applying for a Class A CDL are required to complete the initial 50 questions as well as 20 additional questions about combinations. Each endorsement requires the applicant to complete a separate knowledge assessment. Endorsements for Doubles/Triples, School Bus, Tank, and Passenger Transport are comprised of 20 questions. The Hazardous Materials Endorsement requires a 30 question test. Lastly, the removal of the Air Brake Restriction is comprised of 25 questions. All assessments must be passed with a score of 80 percent or better.

All applicants will need to take a skills test that assesses their ability to operate their intended vehicle. Once applicants receive their Kentucky CDL permit after completing the knowledge assessment(s), they may apply for the skills test 14 days later. The skills test is comprised of three different parts that will all be assessed in one testing session. These areas include the pre-trip inspection, basic control skills, and driving test. All applicants must successfully show their skills in all three of these areas to be considered eligible for their CDL.

Additional Information

Information on the Kentucky Division of Driver Licensing

The Kentucky State Police regulates CDL requirements in Kentucky. To get more information contact them via:

Website: http://kentuckystatepolice.org/drivers-testing/

Phone:  502.782.1800

 

Additional Kentucky CDL Helpful Links

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