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

If you have riders on board, you must never refuel:

Unless on a scenic tour bus.

With any window open.

In a closed building.

At any time.

2 / 40

What is the first thing to do if your vehicle catches fire while driving?

open the hood and let the flames die down

pull off the road and park in an open area

find a service station to pull into

open the door and jump out of the vehicle

3 / 40

The locking jaws of the kingpin should close around:

the apex

the shank

the tip

the base

4 / 40

How do you supply air to the trailer tanks?

by connecting the red and blue lines

by pulling out the trailer air supply valve

by pushing in the trailer air supply valve

by connecting the service line glad hand

5 / 40

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

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

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

6 / 40

What kind of surge occurs with baffles?

Circular

Bottom to top

Back to front

Side to side

7 / 40

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

disconnect the air supply lines after supplying air to the trailer air system via the tractor

go ahead and couple it

make sure the trailer won't roll when coupling

have the trailer electric cord to a generator so it can supply braking power

8 / 40

Where are shut off valves located on trailers that are doubles or triples?

on emergency air lines

on parking brake lines

on service air lines

on emergency and service air lines

9 / 40

What is the main difference between a portable tank and a cargo tank?

Cargo tanks are permanently attached, portable tanks are temporarily attached.

Cargo tanks are filled while on the vehicle, portable tanks are filled while off the vehicle.

Portable tanks must additionally show the owner or lessee's name on them.

All of these answers are correct.

10 / 40

Select the statement that best describes what the service line is for.

all answers listed

it is controlled by the trailer hand brake and carries air

it is controlled by the foot brake or trailer hand brake and carries air

it is controlled by the foot brake and carries air

11 / 40

What should you do if you start a trailer skid?

slowly apply a firm pressure to the brakes

quickly step on the brakes

release the brakes to get traction back

use your trailer hand brake

12 / 40

You should adjust all the outside left and right side convex mirrors to see:

The right and left front tires touching the ground.

The entire area to the rear of the mirror along the side of the bus.

The children's exit path out of the main bus door.

200 feet behind the bus.

13 / 40

How far before a railroad crossing should you stop your bus?

10 to 35 feet

15 to 50 feet

100 feet exactly

50 to 75 feet

14 / 40

What does the amount of liquid allowed in the tank depend on?

All answers listed.

The legally allowed weight limits.

Whether and how much the liquid will expand during the trip.

The size of the tank.

15 / 40

When must a driver’s inspection report be completed?

Before driving your bus.

Only if defects are found.

All of these answers are correct.

At the end of each shift.

16 / 40

What will probably happen if the converter dolly is still under the second trailer and the pintle hook is unhooked?

the air lines will explode

the dolly tow bar could fly up

nothing will happen

the engine brakes will unlock

17 / 40

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

only every 7 days

only at the end of the shift

yes

18 / 40

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

wet-looking road

a bridge

a shaded area

all of these answers are correct

19 / 40

Select the true statement about dual air brake systems.

there is a primary system and a secondary system

there is a single set of brake controls

all of these answers are correct

one system controls the front axle and the other controls the rear axle

20 / 40

A commercial motor vehicle (CMV) is defined as:

all of these answers are correct

a vehicle transporting hazardous materials

a vehicle with a gross weight over 26,001 lbs

a vehicle transporting 16 or more passengers

21 / 40

Select the true statement in regards to an application pressure gauge:

it shows how much air pressure you are applying to the brakes

when accelerating it releases air

it is connected to the generator

it prevents the brakes from failing

22 / 40

You should_____when checking the slack adjusters on S-Cam brakes.

pull on the slack adjuster while the parking brakes are on

make sure there is an inch of leeway in each direction for the slack adjuster

pull on the slack adjusters after draining the air from the system

pull hard on each slack adjuster while wearing gloves

23 / 40

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

hydraulic fluid reservoir

steering knuckle

main spring

tie rod

24 / 40

Which of the following statements is FALSE:

Do not tow or push a disabled bus with riders aboard either vehicle, unless getting off the bus would be unsafe.

Avoid fueling your bus with riders on board unless absolutely necessary. never refuel in a closed building with riders on board.

Do not talk with riders or engage in any other distracting activity while driving.

Do not transport intoxicated passengers.

25 / 40

Overhead inside mirror is used to:

Monitor traffic that approaches and enters the blind spot area.

See the area where students exit the bus.

See the blind spot immediately behind the bus.

See all of the students.

26 / 40

A safe haven is ______.

an approved place for parking unattended vehicles loaded with corrosive materials

an approved place for parking unattended vehicles loaded with radioactive materials

an approved place for parking attended vehicles loaded with flammable materials

an approved place for parking unattended vehicles loaded with explosive materials

27 / 40

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

back towards the driver's side, where you can see better

use a helper

use mirrors on both sides

look at your path

28 / 40

Which of the following statements about loading and unloading cargo tanks is false?

The person attending the tanker must have a clear view of it.

The person in attendance must be authorized and able to move the vehicle.

The person in attendance must be within 50 ft of the tanker.

The person in attendance must be aware of the danger.

29 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

Poison 23 and dangerous.

Poison 23 and flammable gas 21.

Just dangerous placards are required.

None, you cannot load these materials together.

30 / 40

Make sure that_____before you back under a trailer.

the air supply knob has been pushed it

the trailer brakes have been locked

the air supply knob has been pulled out

the air brakes are in an off position

31 / 40

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

slack adjuster

brake drum

axle

safety valve

32 / 40

Select the step that comes first:

connect the air supply lines

shift into reverse

lower the landing gear

apply a firm pressure to the trailer brakes

33 / 40

You should line up_____when getting ready to back under the trailer.

about 12 degrees to the left of the trailer

above 12 degrees to the right of the trailer

directly in front of the trailer

for the kingpin to activate on the driver's side first

34 / 40

What are spring brakes?

they do not function when the psi falls below 30 psi

all of these answers are correct

they are brakes that automatically come on for a truck or trailer when the psi drops too low

they are powerful springs that hold back air pressure when driving

35 / 40

You should_____when the low pressure warning is activated:

wait until the air brakes kick in automatically

maintain highway speed and keep an eye on your air pressure gauge

pump the brake pedal to come to a stop immediately

come to a safe stop while you still have control of the brakes

36 / 40

What is the earliest way to notice a trailer skid?

you can hear the tires squealing

you can feel it pulling your steering wheel

you can see it in your mirrors

you can feel a jerk in the back of the tractor

37 / 40

What do yo need to do before supplying air to the air tanks of the second trailer?

open the shut off valves at the back of the first and second trailer

close the shut off valves at the back of the first and second trailer

close the shut off valves at the back of the second trailer and open the shut off valves at the back of the first trailer

open the shut off valves at the back of the second trailer and close the shut off valves at the back of the first trailer

38 / 40

How should you inspect a converter dolly?

as if it is a trailer

as if it is an engine

as if it is an axle with a fifth wheel

as if it is cargo

39 / 40

How far away are you required to park from a bridge, tunnel, or building if you are carrying Division 1.2 or 1.3 materials?

At least 400 feet

At least 500 feet

At least 300 feet

At least 600 feet

40 / 40

When is it best to wear your seat belt?

Only when you will be driving over 35 mph.

Always.

Only if your bus holds more than 27 people.

Only if required by company policy.

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

CDL Category Practice Tests

CDL Practice Test

How To Get A north carolina Commercial Drivers License

Hit the Open Road

north carolina CDL License Test Tips

Additional Information

Information on the North Carolina Department of Transportation

Additional North Carolina CDL Helpful Links

north carolina
CDL Practice Test