north carolina
CDL Practice Test

Welcome to the CDL practice test site for North Carolina. You can use this site to prepare for the official North Carolina DMV CDL Test. The questions on these practice tests apply to all of the areas you'll need to be knowledgeable in to obtain your NC CDL. You can take these practice tests as many times as you need to, and all of these tests are free. 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

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

the emergency tractor brakes will activate

you will come to a complete stop

nothing will occur until you try to use the brakes

the trailer's air tank will leak through the one line

2 / 40

What position should the heaviest trailer be in when pulling 3 trailers?

it makes no difference

in the back

in the front

in the middle

3 / 40

Should your air compressor stop working:

you will lose your ability to brake immediately

the brakes will lock up on you immediately

there will still be air pressure left in the air tanks

there will be no affect to your brakes

4 / 40

The most stable tanker shape is:

Elliptical

Round

Square

Cylindrical

5 / 40

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

Non-steering axle tires

Drive axle tires

Steering axle tires

Donut tires

6 / 40

Where can you find a shipper’s certification?

It is a separate document that all hazmat drivers must keep in their vehicles.

On the original shipping paper.

There is no such thing.

On all packages.

7 / 40

To prevent a roll over a driver can 1) keep the cargo as low to the ground as possible and 2) _____.

have the brakes properly adjusted

drive while intoxicated

have the fifth wheel's free play as tight as possible

take turns slowly

8 / 40

The school bus driver may be the only contact person from school system some parents meet. The percentage of such parents is as high as:

0.72

0.5

0.65

0.85

9 / 40

What is a king pin?

it is a pin that a driver receives for being a safe driver

it is a pin that holds the wheel on to the axles

it is a pin that locks the trailer to the tractor on the fifth wheel

it is a pin that locks the air brake lines together

10 / 40

It has just reached freezing. Which of the following areas is slippery?

all of these answers are correct

wet-looking road

a shaded area

a bridge

11 / 40

You need to raise the landing gear just to the height of where it clears the pavement before driving.

only in raining conditions

false

true

only in ideal conditions

12 / 40

Which of the following is NOT a basic step to be taken at a crash scene?

protect the area

care for the injured

gather the contact information of all the drivers involved

notify authorities

13 / 40

What kind of surge can occur in a tank with baffles?

Back to front

Bottom to top

Side to side

All answers listed

14 / 40

Select the true statement in regards to quick steering movements and double trailers:

it is easier to countersteer doubles/triples than other vehicles

nothing will occur

it is easier to tip doubles and triples from quick steering movements than other vehicles

you should apply a firm pressure to the brake pedal at the same moment you do quick steering movements

15 / 40

This item should not be rusted, bent, or damaged and centered over evenly spaced tires and dual wheels.

Lug bolts

Spacers

Fifth wheel

Frame

16 / 40

A "transport index" relates to products that are:

Liquid

Radioactive

Overweight

Meant for human consumption

17 / 40

Puddles or dripping fluids from the underside of the transmission and engine may indicate:

A leaking line or hose

A leak from the engine

Problems with the water pump

All of these answers are correct

18 / 40

Start by___when coupling.

coupling the converter hook to the pintle tongue of the first trailer

backing the converter dolly under the second trailer

having the second trailer against the dock

coupling the tractor to the second trailer

19 / 40

Alcohol evaporators in some air brake systems help to:

decreases the risk of water in the air brake valves in cold weather

cleans out oil from the air lines

decrease the chances of ice in the air brake valves in cold weather

it removes fuel from the air lines

20 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

Top off valves

Service lines

Glad hands

Relay knife

21 / 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

22 / 40

Select when you should use the parking brake:

with rare exception, every time you leave your vehicle

when in residential areas

each time you leave your vehicle for any amount of time

when you are leaving your vehicle for more than an hour

23 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

None of these answers are correct.

The bridge has an attendant or traffic officer who controls traffic whenever the bridge opens.

Both of these answers are correct.

There is a traffic light showing green.

24 / 40

You should____to check the free play of manual slack adjusters on S-Cam brakes.

drain off air pressure before adjusting after parking on level ground

apply the parking brake after stopping on level ground

after parking on a slight grade, release the parking brake, activate the service brakes and check for vehicle movements

chock the wheels and release the parking brakes after parking on a level ground

25 / 40

How should the trailer be lined up when preparing to back the tractor up?

directly in front of the trailer

about 12 degrees to the left

about 12 degrees to the right

directly behind the trailer

26 / 40

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

apply a firm pressure to the brake pedal and don’t let off

use just the trailer brakes

use the engine brake

use stab or controlled braking

27 / 40

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

you should try to avoid driving next to others when possible

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

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

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

28 / 40

If you are drowsy, you should _____ before you drive.

take a cold shower

drink coffee

do a little exercise

get sleep

29 / 40

Is it important to look into the back of the fifth wheel to see if the lockpin is locked in?

yes

only at the end of the shift

only every 7 days

30 / 40

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

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 farther away and smaller than they actually are

make things look closer and larger than they actually are

31 / 40

You should decrease to a safe speed before entering a curve and then_____through it.

accelerate

pump the brakes

ride the brakes

shift down 2 gears

32 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

Your employer tells you to.

Getting off the bus would be unsafe.

You are also a class a tow truck driver.

Bus is on a drawbridge.

33 / 40

Select the statement that is not part of the air-brake system:

clutch brake system

service brake system

parking brake system

emergency brake system

34 / 40

If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?

At least twenty feet

At least five feet

At least ten feet

At least half a mile

35 / 40

A shipment described on the Hazardous Waste Manifest may only be delivered to another _______ carrier or treatment facility, who then signs the ______, giving you a copy which you must keep.

licensed, manifest

trucking, uniform hazardous waste manifest

registered, uniform hazardous waste manifest

responsible, papers

36 / 40

Select the true statement about baffled tankers:

None of the answers listed.

It has separate tanks.

It has walls with holes inside for liquid to flow through.

It has hollow balls in it to slow the motion of the liquid in the trailer.

37 / 40

Five hazard classes that require placarding in any amount are ______.

poison gas 23, dangerous when wet 43, explosives 13, explosives 12, and explosives 11

none of these answers are correct

explosives 11, corrosive 8, flammable 3, explosives 14, and poison 61

corrosive 4, hazardous 14, flammable 2, explosives 7, and radioactive 12

38 / 40

When would a drive-wheel skid result in a jackknife when pulling doubles?

when the tractor spins around

when the trailer slides to the right into the shoulder

when the tractor brakes lock up

when the trailer pushes the towed vehicle sideways

39 / 40

Select the definition for outage:

It is the liquid that must be drained off to meet legal carry limit.

It is loss of power to the headlights.

It is the process of liquid expansion as it becomes warm.

It is how much power is lost to the hydraulics.

40 / 40

An air system that is fully charged will typically have ___ psi of pressure.

200

250

125

Your score is

The average score is 0%

5/5 - (3 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A north carolina Commercial Drivers License

To be eligible for a CDL in North Carolina, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within North Carolina only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of North Carolina).

North Carolina applicants must provide proof that they are medically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form CDL-MED-1) Medical Certification of Driver Type or Commercial Driver’s License
Medical Card
Full Medical Report (depending on the circumstances)

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in North Carolina. Applicants can be disqualified from the application process for having multiple licenses.

North Carolina CDL Endorsements
H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer

Hit the Open Road

north carolina CDL License Test Tips

All North Carolina CDL applicants must pass the general knowledge test prior to taking the skills test. The general knowledge test consists of 50 questions. To pass the North Carolina test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The North Carolina skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans who were discharged within 1 year of the application and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

Be active duty military personnel.
Have operated a motor vehicle equivalent to a commercial motor vehicle in the military within 2 years of the application date.
Submit a Certification for Waiver of CDL Skills Test for Military Personnel.

Additional Information

Information on the North Carolina Department of Transportation

The North Carolina Department of Transportation provides administers CDL license requirements in North Carolina. To get more information contact them via:

Website: https://www.ncdot.gov/dmv/license-id/driver-licenses/commercial/Pages/default.aspx

Phone: 915.715.7000

Additional North Carolina CDL Helpful Links

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

north carolina CDL Practice Test