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

An example of a low pressure warning signal for air brakes is:

a buzzer

a wig wag mechanical arm

all of these answers are correct

red light

2 / 40

One reason hauling liquids in tank vehciles require special care is:

Because of uneven expansion.

Because of the movement of the liquid.

Because of the extreme weight.

Because of strong winds.

3 / 40

There are 2 reasons as to why hauling liquids take special care. One reason is the ___center of gravity.

narrow

low

high

long

4 / 40

Select the part that is not a part of the drum brake:

safety valve

slack adjuster

brake drum

axle

5 / 40

You must have placards for explosives, poison gas or flammables exceeding:

100 pounds

10 pounds

10 cartons

Any amount

6 / 40

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

20 feet, 50 feet, and 100 feet toward approaching traffic

50 feet, 100 feet, and 150 feet toward approaching traffic

100 feet, 200 feet, and 300 feet toward approaching traffic

10 feet, 100 feet, and 200 feet toward approaching traffic

7 / 40

Which of the following statements about overhead space is true?

the weight of the cargo changes a truck's height

an empty van is lower than a loaded one

warning lights are always installed on low bridges and overpasses

athe heights posted at bridges are usually accurate

8 / 40

The most stable tanker shape is:

Elliptical

Cylindrical

Square

Round

9 / 40

The trailer height is correct for connecting a converter dolly to a second or third trailer when:

the trailer will rise slightly when the converter dolly is backed underneath it

the kingpin is over the fifth wheel

the center of the kingpin is past the locking jaw

all answers listed

10 / 40

Why should you use chocks when parking a trailer without spring brakes?

the trailer wheels are free to turn as there will be no emergency brakes should the air supply in the trailer air tank leak

to prevent someone from stealing the vehicle

to prevent a runaway trailer

the trailer wheels are free to turn as there will be no service brakes should the air supply in the trailer air tank leak

11 / 40

Which of the following hazard classes utilizes a transport index in order to determine how much of it can be loaded on a single vehicle for transport?

Class 4—live chickens

Class 7—radioactive materials

Class 1—explosives

Class 3—flammable liquids

12 / 40

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

it will ensure a good air line connection

it will ensure a good electrical connection

it will reduce noise and heat

it will prevent steering problems

13 / 40

Select the true statement in regards to empty trucks:

they may have poor traction due to bouncing and wheel lockup

none of the answers listed

they require a shorter stopping distance than a fully loaded trailer

they are easier to stop because there isn't cargo shifting in the trailer

14 / 40

Select the step that comes first:

shift into reverse

lower the landing gear

connect the air supply lines

apply a firm pressure to the trailer brakes

15 / 40

What is the standee line?

A 2 inch line on the floor that all passengers must stay behind.

A 2 inch line down the aisle to help keep passenger traffic flowing.

A line at the back of the bus where passengers must stand before exiting.

A line around each seat to help each passenger have a little personal space.

16 / 40

Which of the following should you do when driving the school bus in high wind?

Speed up to get away from the wind as quickly as possible.

Pull off the road to wait for the winds to die down.

Drive only head-in to the wind to avoid cross-wind buffeting.

Keep a strong grip on the steering wheel and try to anticipate gust.

17 / 40

Should your air compressor stop working:

the brakes will lock up on you immediately

there will still be air pressure left in the air tanks

you will lose your ability to brake immediately

there will be no affect to your brakes

18 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

Any more than 500 feet.

In an upwind direction.

Any more than safety required.

Any more that 450 feet.

19 / 40

Placarded vehicles must carry which type of fire extinguisher?

B-C fire extinguisher

A-B fire extinguisher

C-D fire extinguisher

Hazmat extinguisher

20 / 40

If there is rust around the nuts, what may it indicate?

They need to be changed out.

There is a leak somewhere.

They are loose.

They are fitted just right.

21 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

Make sure the parking brake is activated after getting in the cab.

Listen for any unsual noises after starting the engine.

Shift the gear to neutral.

Start the engine after getting in the cab.

22 / 40

Which of the following will confirm that you are driving with anti-lock brakes?

Red indicator lamp on the brake cylinder.

Yellow abs malfunction lamp on the instrument panel will light when you start the engine.

The bus operators manual.

The certification on the driver side door.

23 / 40

With the controlled braking method, you _____?

apply the brakes as hard as you can without locking the wheels

apply the brakes all the way until the wheels lock up, release the brakes and apply them again when the wheels start to roll again

lightly apply braking pressure

repeatedly tap the brakes as fast as you can

24 / 40

What does the air compressor governor control?

when air pressure is applied to the brakes

when the air is taken out of the hoses

when air is pumped into the air tanks

when the valve system releases pressure

25 / 40

You are required to have a tank endorsement when transporting:

Gas or liquid

Bulk fertilizer

Materials that are hazardous

Passengers

26 / 40

Wet brakes can cause _____.

pulling to one side or the other

lack of braking power

brakes to apply unevenly

all of these answers are correct

27 / 40

Mirrors with a convex surface or "spot" mirrors _____.

make things look farther away and smaller than they actually are

they show a larger area than flat mirrors so do not need to be checked as often

are illegal in most states

make things look closer and larger than they actually are

28 / 40

The two other places where the hazardous identification number must appear are:

On the gas tank and a sticker in the glove compartment.

On a temporary license plate holder and the steering wheel.

On the back of the truck and inside the glove compartment.

Any bulk packaging and the cargo tanks.

29 / 40

You should expect____when backing a tractor under a trailer.

the trailer to lift slightly

the end of the kingpin to be level with the top of the fifth wheel

the trailer landing gear to be fully extended

the trailer to be completely still

30 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

5 seconds

3 seconds

4 seconds

6 seconds

31 / 40

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

safely backing

steering

accelerating

first aid certification

32 / 40

The average person requires how many hours of sleep per 24 hour period?

6 or 7

8 or 9

5 or 6

7 or 8

33 / 40

The locking jaws of the kingpin should close around:

the shank

the base

the apex

the tip

34 / 40

Which of the following are some suspension system defects?

cracked or broken spring hangers

all of these answers are correct

leaking shock absorbers

broken leaves in leaf spring

35 / 40

Select the true statement about handling triples and doubles:

because of the crack the whip effect, the rear trailer of a 100-foot triple is less likely to tip over

due to off-tracking, a triple bottom rig can come to a stop faster than a 5-axle tractor

a tip over of the rear trailer can occur due to sudden movements of the steering wheel

triples and doubles handle the same as singles

36 / 40

What are some of the important parts in the steering system?

main spring, axle, spring shackle

tie rod, spindle, pitman arm

leaf spring, vehicle frame, torque rod

rim, lug nuts, tire

37 / 40

Buses may NOT have recapped or regrooved tires:

On the outside rear wheels.

Anywhere except on the front wheels.

On front wheels.

When it's been raining.

38 / 40

What is a technical name?

The medical term for hazardous materials used by medical personnel.

The name for a hazardous material most commonly used in the trucking community, accepted as standard.

The name for a hazardous material most commonly used on the street.

The name for a hazardous material used in scientific journals and texts, recognized as its chemical and microbiological name.

39 / 40

If students must cross the street, when they get off the bus, which statement is true?

The student should wait to cross the street until the bus continues on its route.

If the bus is equipped with the crossing gate, the danger of running over the child is eliminated.

For crossing, students should make eye contact with the bus driver and wait for the driver's signal that it is safe to proceed.

When the driver signals that it is safe to proceed, the students must run across the street to reduce the exposure to danger.

40 / 40

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

All answers listed

Tire rims

Lug bolts

Budd spacing or spacers

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