kentucky
CDL Practice Test

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

Select the true statement in regards to as why you should make sure the fifth wheel plate is greased as recommended:

To make sure the electrical connections are good.

To decease heat and noise.

To make sure that uncoupling easier.

To prevent any steering problems.

2 / 40

Select the two reasons as to why special care is needed when driving a tank vehicle:

None of the answers listed.

The danger of surge and the high center of gravity.

The chance of rollover and of spontaneous combustion.

The danger of surge and the low center of gravity.

3 / 40

The method for testing hydraulic brakes for leaks is to _____.

pump the brake pedal 5 times and apply firm pressure for 3 seconds the pedal should not move

pump the brake pedal 3 times and apply firm pressure for 5 seconds the pedal should not move

all of these answers are correct

hold the brake down for 5 seconds and listen for leaks

4 / 40

Which of the following is not a prohibited practice on the bus:

Fueling your bus with riders on board if about to run out of fuel.

Talking with riders while driving.

Towing a disabled bus with riders aboard when getting off would be a safe option.

Refueling in a closed building with riders on board.

5 / 40

You should place the starter switch key into your pocket while you are performing the pre-trip inspection because:

all of these answers are correct

it could damage the starting mechanism

someone could steal the truck

someone could start and move the truck

6 / 40

What is the service air line controlled by?

the relay vavle by sending air pressure from the trailer air tank to the trailer brake chambers

the relay valve that connects the trailer air tanks to the trailer air brakes

all answers listed

the pressure applied to the trailer hand brake or by the foot brake

7 / 40

How can you check slack adjusters?

by frequently checking the pressure gauge

by using a fixed wrench

it is not possible to check manually

by pulling hard on each slack adjuster

8 / 40

It is important to know the outage required for the liquids you carry because:

Some of the denser liquids don't need any.

Tank baffles may not always be permitted with outage.

None of these answers are correct.

Some liquids will expand more than others when warm.

9 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

hydraulic brakes

engine brakes

emergency brakes

all answers listed

10 / 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?

none of the answers listed

supply air to the trailer air system via the tractor and then disconnect the emergency line

make sure the trailer will not roll away when coupling

use a portable generator to supply brake pressure

11 / 40

Select the true statement:

wait to brake heavy vehicles for as long as you can

light vehicles require more braking power than heavier vehicles

you should always ride the brakes

a bobtail tractor will take longer to stop than a combination vehicle that is loaded to the max

12 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

percentage of water

percentage of alcohol

the fuel to air ratio

weight distribution

13 / 40

Which of the following statements about special danger of loading and unloading is true?

Students should be told not to use the handrails when exiting the bus due to the possibility of causing a clothing hang up.

Students should be told to remain seated while the bus is in motion.

Students should be told to leave any dropped objects and move to the point of safety out of danger and get the driver's attention to retrieve the object.

Students should be told to pick up any dropped objects as long as it is not under the bus.

14 / 40

How often should you check the cargo you are transporting?

every 150 miles or every three hours

within the first 50 miles after beginning a trip

after every break you take during driving

all of these answers are correct

15 / 40

The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as.

distracted driving

aggressive driving

defensive driving

road rage

16 / 40

You do not have a hazardous materials endorsement on your commercial driver license. When can you legally haul hazardous materials?

Never.

Only when the shipment does not cross state lines.

Only in the event of a federally declared emergency situation.

Only when the vehicle does not require placards.

17 / 40

Which contains more alcohol: a 12-ounce glass of 5% beer, a 5-ounce glass of 12% wine or a 1 1/2-ounce shot of 80 proof liquor?

they all contain the same amount of alcohol

5-ounce glass of 12% wine

12-ounce glass of 5% beer

1 1/2-ounce shot of 80 proof liquor

18 / 40

How often should you drain your air tanks?

at the beginning of each month

at the end of each shift

at the end of each trip

at the end of each week

19 / 40

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

Bolt spacers

Lug nuts

Rims

None of the answers listed

20 / 40

Why should you not use the trailer hand brake to straighten out a jack knifing trailer?

this is the only situation in which you should use the hand brake

the tractor wheels caused the skid in the first place once the trailer wheels grip the road again, the trailer will start to push the tractor and straighten out

none of the answers listed

the trailer wheels caused the skid in the first place once the trailer wheels grip the road again, the trailer will start to follow the tractor and straighten out

21 / 40

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

in a closed position

in an open position

in a halfway open position

in a 1/3 way open position

22 / 40

To transport cargo safely, which of these are you NOT responsible for?

ensuring the freshness of sealed cargo

making sure that cargo is properly secured

recognizing possible overloads

inspecting the cargo

23 / 40

Select the false statement about suspension:

Check for broken or cracked spring hangers.

Check to make sure torsion bars and/or arms are lubricated.

Check for shifted, missing, or cracked leaf springs.

Check for distorted or broken coil springs.

24 / 40

What should you do before you begin to couple?

activate the spring brakes

position the fifth wheel beforehand

check your path for any hazards

inspect the condition of the frame of the tractor

25 / 40

Before transporting a sealed load, you must check:

a picture of whatever is inside

that you don't exceed gross weight and axle weight limits

a small sample of whatever is inside

all of these answers are correct

26 / 40

What handling effect should you expect when your tank has baffles?

There will not be as much front to back surge compared to a tank without baffles.

There will not be as much side to side surge compared to a tank without baffles.

There is no difference in handling when you have baffles.

The surge will be slower than a tank without baffles.

27 / 40

Which of the following is NOT an acceptable type of marking for hazardous materials?

Descriptive name in roman print

Identification number

Name in italics

Un marks

28 / 40

You should check your tires every ____ or every ____ when driving in very hot weather.

5 hours, 250 miles

2 hours, 100 miles

1 hour, 50 miles

3 hours, 200 miles

29 / 40

Which of the following is a recommended procedure when unloading the students?

Put the transmission in neutral gear and put on the brakes.

Tell students to remain seated until they are told to exit.

Position yourself outside of the bus in front of crossover mirror to supervise unloading.

Let the students begin moving to the front of the bus before it's fully stopped to maximize efficiency.

30 / 40

The safety valve is usually set to open at:

125 psi

150 psi

225 psi

75 psi

31 / 40

You should___when driving down a long steep hill.

release the brake once the vehicle is traveling 5 mph below the safe speed

repeatedly pump the brake pedal

use the engine brakes only

begin braking once the vehicle is 10 mph above safe speed

32 / 40

Buses may NOT have recapped or regrooved tires:

On the outside rear wheels.

On front wheels.

Anywhere except on the front wheels.

When it's been raining.

33 / 40

What action should you take if there is no phone available and you discover your hazardous materials shipment leaking at a rest stop?

Leave your truck parked with emergency lights on and walk for help.

Send someone for help with all the necessary information.

Keep driving for help as quickly as possible.

Keep driving, slowly and cautiously, until you reach a phone.

34 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

At least 75 feet.

At least 100 feet.

At least 50 feet.

At least 25 feet.

35 / 40

Select the true statement in regards to managing the space to the sides:

you should drive down the center of both lanes over the pavement markings

you should try to avoid driving next to others when possible

high wind gusts will not cause any issues for doubles or triples

you should always keep your vehicle to the right side of the lane

36 / 40

Select the statement that describes smooth bore tanks:

They are divided with holes from liquid to flow through controlling surge.

None of the answers listed.

They are divided down into smaller tanks.

They are 1 large tank.

37 / 40

School buses are one of the safest means of transportation. What two key factors contribute to this impressive safety record?

Vehicles and road conditions.

Vehicles and drivers.

School district policies and police involvement.

Bus drivers and driver training.

38 / 40

These tires should have a minimum tread depth of 4/32 inches.

Steering axle tires

Non-steering axle tires

Donut tires

Drive axle tires

39 / 40

A vehicle placarded for Division 1.1, 1.2, or 1.3 explosives:

May never be parked on private property.

May not be parked on the cosignee's property.

May never be left unattended under any condition.

May be left unattended in a safe haven.

40 / 40

You should have the fifth wheel plate greased as recommened because:

it will reduce noise and heat

it will prevent steering problems

it will ensure a good electrical connection

it will ensure a good air line connection

Your score is

The average score is 0%

4/5 - (3 votes)

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.

kentucky CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A kentucky Commercial Drivers License

Hit the Open Road

kentucky CDL License Test Tips

Additional Information

Information on the Kentucky Division of Driver Licensing

Additional Kentucky CDL Helpful Links

kentucky
CDL Practice Test